THE OCCURRENCE OF THEOBALDIA ARCTICA, EDW., IN ENGLAND. 389 
Fab., provittana, Dsvgs., semiustana, Curt., semistriana, Dsvgs., 
bentleyana, Curt., ustulana, Sheldon, southiana, Sheldon, webbiana, 
Sheldon, atrana, Clark, jansoniana, Webb, subnigrana, Image, 
nigrana, Clark. 
(7) Desfontainana group. Forms with the front portion of 
superiors from the inner margin of the base to a point on the costa 
near the apex reddish-orange (except in ab. sericana, and 
ab. flammeana, in which it stops at the button), the ground colour 
being shades of grey or slate colour, including abs. desfontainana, 
Fab., fulvana, Sheldon, consimiliana, Stphs., sericana, Hub., 
flammeana, Webb, albovittana, Stphs., and fulvocristana, Stphs. 
(8) Cristalana group. Forms with the superiors much varie- 
gated with lighter and darker markings, the ground-colour grey 
or brown, including abs. cristalana, Donovan, procristalana, 
Webb, subcristalana, Curtis, fulvovittana, Stphs., subfulvovittana, 
Clark, and combustana, Dup. 
(9) Capucina group. Forms with the ground-colour of the 
superiors almost or quite white, mottled with grey or reddish- 
grey, andincluding abs. capucina, Johnson, subcapucina, Desvignes, 
purdeyana, Webb, gumpinana, Johnson, masoniana, Clark, curti- 
sana, Desvignes, tolana, Desvignes, flavana, Sheldon, and ochreana, 
Sheldon. 
It is very difficult to decide where to place a few of the forms, 
which have affinities with more than one group. Amongst these 
are substriana, Stphs., rufinigrana, Clark, semistriana, Dsvgs., 
and some of the melanic forms. 
(To be continued.) 
THE OCCURRENCE OF THEOBALDIA ARCTICA, 
Epw., IN ENGLAND. 
By Henry F. Carter. 
In January, 1920 (‘ Bull. Ent. Res.,’ x, p. 186), Mr. F. W. 
Edwards, of the British Museum, described a mosquito of the 
genus Theobaldia under the name J’. arctica. This species, 
which was represented by a single male captured at Archangel, 
much resembled the common European 7’. annulata, Sch., and 
was almost identical in coloration with JT. alaskdensis, Lud. 
(1906), and 7’. siberiensis, Lud. (1920). The last-named species 
is known from the female only, but the Archangel form 
apparently differed slightly from 7’. alaskdensis in the structure 
of the male hypopygium, and on this account and in view of its 
widely different place of origin it was accorded specific rank. In 
a later note (‘Scottish Naturalist,’ May-June, 1920) the same 
author recorded 7’. arctica as new to the British faunal list, he 
having received four specimens (1 ¢, 38 ¢) from Dumbarton 
and Edinburgh. He also stated that he was ‘‘ now inclined to 
