AQUATIC INSECTS IX NEW YORK STATE 351 



thorax, leaving the skin, toiiclher with the i-espiratory fihiments, 

 otherwise intact. 



The j;eneric characters of the images liave ah'cady been 

 given in sufficient detail in the cliaracters of the family; to 

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

 all the species I have examiiUMl are trilid; those of the female 

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

 s]turs. in a few species only are those of the fore legs rudiment- 

 ary. The middle and hind nn^tatarsi 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 tlexor surface [[>l.;i8, 

 fig. 1. 8. !>]. 



List of the North American species of Simuliidae, genus Simulium 



Latreille, Hist. Nat. Crust, et lus. 1S<»4. 14:294. 

 l*argus Williston, N. Am. Fauna, no. 7. May 1893. p.2.''»3. Cal. (Syu. of 



S. V i 1 1 a t u m Zett. according to Coquillctt, Harriman Exp. 1900. 



p.3931. 

 argyropeza. See r e p t a u s . 

 *bracteatum Coqnillett. T'. S. Dep't Agric. Div. Ent. Bui. 10, n. s. 1898. 



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

 calceatum Harris. A catalogue name according to Riley. Am. Eut. ISTO. 



P.4G7. 

 cincta. See r e p t a n s . 

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

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

 columbatcliensis Fabricius nee Scbiiuhauer. See r e p t a n s . 

 decorum Walker. List of Dipterous Insects, etc. ptl. 1S48. p. 112. 



Hudson Bay Ter. (Syn. of S. vittatum Zetterstedt, according to 



Coquillctt, u. s. Bui. lU. 1898. p.(;8,i. 

 elegans. See r e p t a n s . 

 erythrocephala. See r e p t a n s . 

 *fulvum Coquillctt, U. S. Nat. Museum Proc. 1902. 2G:9(j: 



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

 *g'laucuin Coquillctt. F. S. Nat. Museum ProL-. 1902. 2.^):9T. Missouri. 

 / *griseum Co(iuillctt. U. S. Dep't Agrie. Div. Ent. Bui. Ki, n. s. 1898. 



p.G9. Col. 

 *birtipes Fries, ()l>s. Entdniol. Pars, Mouogr. Simuliar. 1824. p. 17, .3. 



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



The following synonymy is according to Scbiuer: 

 18.30 r u f i p e s :Meigen, Syst. Bescbr. 6:311-17. 

 ISSObirtipes Paries. Meigen, Syst. Bescber. G:312-18. 

 18.50 birt i pe s Fries, Zetterstedt. Dipt. Scand. 9:342G-28. 



iTbose names to wbicb a * is prefixed I consider eitber a distinct species, 

 or not sufficiently described to warrant placing as tbe synonym of anotber. 



