AQUATIC INSECTS IN NEW YOEK STATE 405 



anterior margins serrate, six teeth being present in the lateral 

 and 10 in the anterior row. The shape of the head resembles 

 that of Mochlonyx, but with the mandibles more prominent; it 

 is reddish brown in color and heavily chitinized. No eye spots 

 are visible in the specimen. 



The thorax is provided with about eight tufts of feathered 

 hairs on each side, the abdomen with about seven pairs. It is 

 possible that several of the more caudad of what is-here termed 

 thoracic tufts may belong to the first few abdominal segments. 

 The anal segment and appendages resemble those of Anopheles. 

 The dorsal breathing apparatus [fig.l, 4] shown somewhat flexed 

 sidewise in figure 1, is star-shaped with four radiating pointed 

 lobes, between the anterior pair of which open the two spiracles 

 [flig.4s]. At the apex of each of the posterior pair is a single 

 stout bristle. Between the spiracles is a pair of crescent- 

 shaped chitinized brown patches, laterad of which is a pair of 

 small bristles, and another pair is cephalad. The anal segment 

 is ellipsoidal with a row ol 31 tufts of hairs, each tuft composed 

 of several hairs; at the caudal end are four (or six) very small 

 blood gills, besides a single large tuft of hairs. 



Pupa [fig.8]. This resembles that of Culex and Anopheles. 

 The coloring is like that described for the adult. The breathing 

 trumpets are somewhat less flaring at the top than Anopheles, 

 but more so than is usual with Culex. On the posterior margin 

 ■of the first segment of the abdomen are three feathered hairs on 

 each side; 2, 3, 4, and 5 each have two feathered hairs on each 

 side plus some scattered hairs; 6, 7 and 8 each have three or 

 four simple hairs on each side. The swimming paddles [ttg.7] 

 have a single median rib ending in a short, stout spine. 



The venation of the adult wing clearly locates this genus with 

 the Oulicidae; the form of the proboscis proves its relationship 

 with Oorethra and Mochlonyx, forming with these the subfamily 

 ■Corethrinae. 



Subfamily culicinae 



This subfamily is characterized by the possession of the 



typical long proboscis, which is longer than the head and thorax 



taken together. 



Genus anopheles Meigen 



PI. 42, fig. 1-7, 9-11 

 Moderate sized ispecies resembling the ordinary mosquito. 

 Head rounded, occiput prominent; proboscis bristlelike and pro- 

 jecting forward, longer than the antennae; the palpi in both 

 sexes as long as the proboscis, four jointed, the two end joints 



