40 ACADEMY OF NATURAL SCIENCES 



June. The hairy covering is very deciduous, and when an in- 

 dividual is caught by hand, the back of the thorax, in conse- 

 quence of being denuded by the touch, exhibits the dorsal vittae 

 of a blackish color confluent at the base, with an oval black spot 

 on each side. The abdominal annuli are sometimes fuscous or 

 even light brown. 



Le"-s much shorter than those of the preceding species, but 

 like them in not being annulated. 



[Also an Anopheles: AViedemaun has named it A. ferruyi- 

 nosus. — Sacken.] 



2. C. DAMNOSUS. — Rostrum and tarsi annulate with white. 



Inhabits Pennsylvania. 



Head above with rather long yellow-ferruginous hair ; antennae 

 pale-brownish ; rostrum blackish ; with a broad white band on 

 the middle ; thorax black, with three cinereous lines, and clothed 

 with yellow-ferruginous short hair ; scutel dull testaceous ; pleura 

 grayish ; feet pale, covered with blackish hairs ; joints of the 

 tarsi, excepting the first, whitish at their bases; tergum brown, 

 basal margins of the segments cinereous-whitish. 



Length a quarter of an inch. 



This is one of the most common and troublesome of our mos- 

 quitoes. It seems to correspond in some degree with the cingu- 

 latus Fabr., although we must infer from his description, that 

 the posterior tarsi [12] only are annulated. Wiedemann con- 

 siders the civgidatus as the male of his molesius, of which all the 

 tarsi are annulated, like those of our species. I feel, however, 

 perfect confidence in the description of Wiedemann, and there- 

 fore must consider our species distinct, inasmuch as the thorax is 

 not " lateribusque nivcis ;" and from the laudable accuracy of 

 thcrt author, I cannot suppose that he would have overlooked 

 the annulation of the proboscis, which certainly exists in thif? 

 species. 



[AViedemann has changed the name to C. txniorhynchus. — 

 Sacken.] 



4. C. TRISERIATUS. — Anterior margin of the wings fuscous; 

 tergum with white spots on each side. 



Inhabits I'ennsylvania. 



Body brown ; stethidinm livid-brown ; thorax with white hair 

 each side; pleura with two spots of white hair ; feet pale, covered 



[Vol. III. 



