Pokemon you've caught exactly one of (gen 1 only)

Level 30.

Edit; been playing since late July.

What comes to mind is;
Exeggutor
Machamp
Dragonite
Togetic
Grimer
Lapras
Blastoise
Blissey
Vaporeon
List is longer I guess - most evolutions I've only caugt once or twice or more likely never.

Theres alot i've never caught in the Wild.

Level 34
10/30/16

Dragonite
Dragonaire
Gengar *
Gyarados *

*Both level 1

32 signed up in July. Didn't really begin playing til February.

Not counting eggs and evolutions A possibly incomplete list:
Golem
Hitmonchan
Hitmonlee
Chansey
Lapras
Vaporeon
Porygon
Snorlax(recent!)

I remember seeing a Blastoise and a Dewgong that got away too.

Lvl 30. Started playing at launch in europe and stopped playing in late september. Began to play again in february.

Venusaur
Machamp
Hitmonlee
Lickitung
Chansey
Lapras*
Snorlax
Dragonair
Dragonite

Level 32 // 7.11.16

Dragonair
Dragonite
Charizard
Clefable
Vileplume*
Muk
Cloyster
Feraligatr*
Scizor
Kingdra

Level 34 || July 6, 2016

Venusaur
Exeggutor
Hitmonlee
Chansey
Jynx
Magmar
Gyarados
Vaporeon
Snorlax

none of them have good IV though.

As long as i can remember, there are 32 gen 1 mons i haven't seen in the wild.

I'm level 33, (2/3 to 34), and technically I started July 16th, but I barely put any time into it before November. It's hard to be sure about some of these, with hatches and evolutions affecting the index count, but here's as accurate as I can be.

Venusaur (Another got away when I ran out of balls.)
Golbat
Vileplume
Diglett (Decent chance this was two, not sure.)
Kadabra
Alakazam
Machop (Also likely it may have been two.)
Slowbro (2nd ran away.)
Dodrio
Grimer
Haunter
Onix (Another ran away.)
Hitmonchan
Chansey (During Valentine's event.)
Starmie
Magmar
Vaporeon

The Diglett, Machop, Onix, and Magmar were all at nests, and then there are dozens I've never seen in the wild at all. Also, I've seen both Rhydon and Jolteon on my radar exactly once, but didn't find them.

I'm Level 30 and started with the Launch but having had a break from 10/16 till 02/17.
Wartortle
Arbok
Nidoqueen
Clefable
Primape
Kadabra
Machoke
Rapidash
Grimer (not even hatched yet)
Exeggutor (event)
Hitmonlee (not even hatched one)
Hitmonchan (not even hatched one)
Weezing
Chansey
Tangela (got one during the event, the others are hatched including a 100% and 98% one ^^)
Seadra
Kabutops

Dragonite
Venusaur
Hitmonchan (now I regretted it for not catching more, the spawn point was removed and it was a biome)
Muk

Porygon

Level 33
Hitmonchan
Vaporeon
Gyarados
Weezing
Vileplume
Charizard
Possibly Dewgong, Ivysaur and Blastoise but I'm not sure.

That's all I can think of

The only 'wild catches' I can think of are Dragonite and Flareon which had exactly one (but then I also evolved some)

Level 33 playing since July (live in semi-rural area)
Caught once:
Arcanine (anything fire is rare as you like where I live)
Machamp
Hitmonchan
Aerodactyl
Nidoqueen
Nidoking
Jolteon
Primeape

Never seen or caught in wild:
Dragonite
Persian
Ninetales
Sandslash
Dugtrio
Dodrio
Raichu
Omastar (hopefully that will change with the event)
Kabuops (see above)
Rhydon (see above)
Golem (see above)

Lv 35 7/17/16

Muk

Lapras (event)

Dragonite (at our beach house)

Kabutop

Gyarados

There are some I've caught none of wild like Aerodactyl and others.

Level 34 Playing since mid July
Dragonite
Snorlax
Nidoqueen
NidoKing
Hitmonlee
Weezing
Omastar

There are at least 10 then I haven't seen or caught. Also worth noting that up until yesterday Lapras would be on my list. Caught my 2nd wild one overall (hatched several over the last month) and my first one with double ice moves :D (lv 24 13/13/0 FB / IB)

Level 37, playing since day 1 in Thailand

The gen 1 mon that I only caught once in the wild are

Machamp
Gyarados
Dragonite
Flareon
Jolteon