AQUATIC INSECTS IN NEW YORK STATE 351 



thorax, leaving tlio skin, together with the respiratory filaments, 

 -otherwise intact. 



The generic characters of the imagos have already been 

 .given in sufficient detail in the characters of the family; to 

 which need only be added that the tarsal claws of the male in 

 .all the species I have examined are trifid; those of the female 

 being either simple or bifid. All the tibiae are provided with 

 :spurs, in a few species only are those of the fore legs rudiment- 

 ary. The middle and hind metatarsi possess a more or less 

 regular row of spines on the extensor margin, which are want- 

 ing on the fore metatarsi. On the second joint of the hind 

 metatarsus at its articulation with the first, there is usually a 

 leaflike appendage covering the base of the flexor surface [pl.38, 

 -fig. 1,8, 9]. 



Xist of the North American species of Simuliidae, genus Simulium 



Latreille, Hist. Nat. Ctust. et Ins. 1804. 14:294. 

 l*argus Williston, N. Am. Fauna, no. 7. May 1893. p.253. Cal. (Syn. of 



S. V i 1 1 a t u m Zett. according to Coquillett, Hairiman Exp. 1900. 



p.393). 

 «rgyTopeza. See r e p t a n s . 

 *bracteatuin Coquillett, U. S. Dep't Agric Div. Ent. Bui. 10, u. s. 1898. 



p.G9. Mass., Cal., N. Y., Kan., Mich, 

 ■calceatum Harris. A catalogue name according to Riley. Am. Ent. 1870. 



P.4U7. 

 ■cincta. See r e p t a n s • 



♦cinereum Bellardi, Saggio di ditterologia Messicana. 1:13. Cal. (Town- 

 send, Baja. etc. 1893). Mex. (Bellardi). 

 •columbatchensis Fabricius nee Schuuhauer. See r e p t a n s . 

 decorum Walker, List of Dipterous Insects, etc. ptl. 1848. p.ll2. 



Hudson Bay Ter. (Syn. of S. v i 1 1 a t u m Zetterstedt, according to 



Coquillett, n. s. Bui. 10, 1898. p.G8). 

 •elegans. See r e p t a n s . 

 ery-throcephala. See r e p t a n s . 

 *fulvum Coquillett, U. S. Nat. Museum Proc. 1902. 25:96: 



1898 ochraceum Coq. not Walk. Mont.; Id.; Col.; N. M.; Alaska. 

 *glaucuin Coquillett, U. S. Nat. Museum Proc. 1902. 2.5:97. Missouri, 

 ♦griseum Coquillett, U. S. Dep't Agric. Div. Ent. Bui. 10, n. s. 1898. 



p.GO. Col. 

 *hirtipes Fries, Obs. Entomol. Pars, Monogr. Simuliar. 1824. p. 17, 5. 



Tfl. 1, f.l. N. Y.. Id., Cal. 



The following synonj-nij^ is according to Schiuer: 

 1830rufipes Meigen, Syst. Besehr. G:311-17. 

 1830 hirti pes Fries, Meigen, Syst. Besclier. G:312-18. 

 1850 hirti pes Fries, Zetterstedt, Dipt. Scaud. 9:342G-28. 



iTliose names to which a * is prefixed I consider either a distinct species, 

 or not sufficiently described to warrant placing as the synonym of another. 



