314 F. W. EDWARDS. 



the maintenance of the two as distinct species. The European form should perhaps 

 be known as A. pitndor var. meigenanus. The hypopygium is identical in the two 

 forms, and also in two or three other American forms which are regarded by Dyar 

 as distinct species. The relationship of all these forms appears to require closer 

 investigation. 



It is quite possible that there may be more than one form in Europe, but the 

 only evidence I have seen of this is provided by a male from Kuusamo, Finland, 

 which has the hypopygium (and indeed the whole body) much more strongly chitinised 

 than usual, and the hairs on the apical lobe rather longer. This may perhaps 

 represent a. distinct variety or species. 



i)w/r7:&rf/joM.— Apparently widely spread throughout northern Europe, and 

 probably spreading across Siberia into Alaska and Canada. I have seen males from 

 Britain ; France ; Belgium ; Sweden (Stockholm, Smaland, Boheman ; Oster- 

 gotland,' Wahlberg) ; northern Lapland {Boheman) ; Finland (Kuusamo, Finnstrom, 

 Frey ; Kuusto, Lnndstrom ; Hattula, L.v. Essen; Kavisloio, J. S a hlberg ; Wiborg, 

 Pipping ; Jamsa, Bergroth ; Tvarminno, Levander) ; Germany (Berlin, Oldenberg, 

 Stobbe ; ' Brocken, Lichtwardt) ; Hungary (Munkacs, Ujhelyi) ; also females, 

 probably this species, from Austria (Hammern, Mik) ; Tyrol (Landro, Mann) ; 

 Siberia (R. Ob, Finsch ; Turuchansk, Yeniseisk, Inserovo, Antsifert)vo and Nasimovo, 

 all on R. Yenisei, Trybom). 



22. Aedes (Ochlerotatus) parvulus, sp. n. (fig. 8f). 



^ Palpi all dark, long-haired, slightly shorter than the proboscis, proportions 

 of joints, 55 : 26 : 19. Head-scales mixed in the middle, then grey, then a patch 

 of blackish scales on each side ; the broad lateral scales extend further up towards 

 the middle of the head than usual ; bristles black. Thorax dark brown ; some white 

 scales at the sides of the mesonotum ; bristles rather dense. Abdomen black, the 

 tergites with narrow straight basal bands of pure white scales. Legs almost all 

 dark, the femora with only a few scattered pale scales and pale beneath. (Hind 

 legs missing.) Length 4 • 5 mm. 



Hypopygium : Lobes of ninth tergite each with about six short hairs. Basal 

 lobe of side-piece prominent, rather pointed, with many long curved hairs but with- 

 out a spine. Apical lobe very small, with a few short straight hairs. Claspette 

 with the stem strongly curved ; appendage with a broad membranous expansion 

 commencing near the base. 



2 Similar to the male. Palpi about one-sixth as long as the proboscis. The 

 hind tibiae have no pale lateral stripe. Length 3-5 mm. 



A. parvulus has the appearance of a small, less hirsute race of A. alpinus, and 

 perhaps it really is so, but the less strongly chitinised hypopygium, the absence of a 

 spine on the basal lobes of the side-pieces, the slightly shorter male palpi, and the 

 less speckled femora seem to be sufficient to distinguish it specifically. 



Distribution.— ¥\n\d.nd : Kittila {^ F. Silen, ? U. Sahlberg) ; type male and 

 female m Helsingfors Museum ; also several females, doubtfully conspecific, in 

 Helsingfors and British Museums, from Karislojo {J. Sahlberg), Kusomen (Hellen) 

 and Suomussalmi [Hellen) ; these last have mostly a fairly distinct pale hind tibial 

 stripe, and the broad head-scales do not extend so far up as in the type. 



23. Aedes (Ochlerotatus) communis (De Geer) (fig. 7 j). 

 Culex communis, De Geer, Memoires, vi, p. 316 (1776). 

 Culex nemorostis, Meigen, Syst. Beschr. i, p. 4 (1818). 

 (?) Culex fasciatus, Meigen, Klass. i, p. 4 (1804). 



(?) Culex leucomelas, Meigen, Klass. i, p. 3 (1804). 



