318 F- W. EDWARDS. 



4. Lobes of ninth tergite with 6-8 fine hairs . . japonicus (Theo.) ; koreicus, Edw. 

 Lobes of ninth tergite with 2-4 stouter hairs . . geniadatus (OHv.). 



Since most of the larvae are unknown, a table cannot be given. 



26. Aedes (Finlaya) togol (Theobald). 



Ciilicelsa togoi, Theobald, Mon. Cul. iv, p. 379 (1907). 



This is very distinct from the other Palaearctic species of the subgenus, both 

 in the tarsal markings and in the male hypopygium, which shows the following 

 characters : — Side-pieces a little over twice as long as their depth at the base ; upper 

 flap much expanded basally, its inner margin with a dense row of long, slightly 

 flattened bristles or bristle-like scales, extending the whole length except on the 

 expanded basal portion ; the lower flap has an aggregation of hairs at the base, but 

 no definite basal lobe. Claspers moderately long, nearly cylindrical, tapering ; 

 terminal spine not very long. Claspettes with the stem extraordinarily short, 

 reduced to a mere knob ; appendage sickle-shaped, slender, not expanded in the 

 middle. Lobes of ninth tergite small, with about 6-8 moderately long hairs. 



The male palpi are about three-quarters as long as the proboscis, nearly straight 

 and slightly hairy. 



The larva is undescribed (unless recently by Yamada) ; Dr. Lamborn found 

 them in granite basins in cemeteries. 



Distribution. — Japan (Osaka, Theobald ; Tokio, S. Yamada, Harmand ; Yoko- 

 hama and Kobe, Lamborn) ; eastern Siberia (Vladivostok, per Dr. C. S. Ludlow). 



27. Aedes (Finlaya) japonicus (Theobald). 



Culex japonicus, Theobald, Mon. Cul. i, p. 385 (1901). 



Apart from the tarsal characters, which are diagnostic, this species is noteworthy 

 for the fine j^ellowish lines on the mesonotum ; similar lines are found in A . koreicus 

 and A. eatoni. The male palpi are slightly shorter than the proboscis, slender, 

 the last two joints somewhat upturned, and with rather scanty hairs, thus approach- 

 ing very nearly to the type of palpi found in Stegomyia. The male hypopygium is 

 extremely similar to that of A. geniculatus. Theobald suggested that this might 

 possibly be the same as A. aureostriatus (Dol.), but this is unlikely. 



The larva is undescribed, unless recently by Yamada ; Dr. Lamborn found a 

 few in similar situations to those in which he took A . togoi. 



Distribution.— ]a.pa.n (Tokio, Theobald, Yamada; Kofou, L. Drouard de Lezey ; 

 Chuzenji, E. Gallois ; Nagasaki, Lamborn). 



28. Aedes (Finlaya) koreicus, Edw. 



Ochlerotatus {Finlaya) koreicus, Edwards, Bull. Ent. Res. vii, p. 212 (1917). 



This should probably be ranked as a variety of A . japonicus, from which it differs 

 in little else than in having narrow white rings at the bases of the last two hind tarsal 

 joints. The palpi of the type male are perhaps slightly less hairy than in A . japonicus. 



The larva is unknown. 



Distribution. — -Korea {Dr. R. G. Mills). 



29. Aedes (Finlaya) niveus (Ludlow). 



Stegomyia nivea, Ludlow in Theobald, Mon. Cul. iii, p. 139 (1903). 

 Stegomyia pseudonivea, Theobald, Ann. Mus. Nat. Hung, iii, p. 75 (1905). 

 Stegomyia albolateralis, Theobald, Rec. Ind. Mus. ii, p. 289 (1908). 



In typical examples of A. niveus the silvery area on the scutum forms a solid 

 patch, but in some specimens (generally females) it is divided more or less com- 

 pletely by a dark median stripe, which may even reach the front margin. The 



