114 INSKCUTOR INSCITI/E MENSTRUUS 



two species here discussed. They were not found in the deep 

 rock pools nor in the mangrove swamp. 



The female, unfortunatel}' represented by but a single speci- 

 men, presents a characteristic appearance in the abdominal 

 banding, all the bands being nearly equally developed, broad 

 and medianly produced. The peculiar scaling of the wing- 

 veins will facilitate the recognition of this species. 



Culex sphinx Howard, Dyar and Knab. 



Larva : Head large, broad, rounded ; antennae large and 

 prominent, rather slender, with a long hair-tuft at apical third, 

 the part beyond attenuated and infuscated, the basal two- 

 thirds spinose, three long bristles and a long spine apically; 

 dorsal head-tufts four-haired. Skin of body nearly smooth, 

 on thorax finely spinulose ; lateral hairs of abdomen in twos 

 on segments 3 to 6. Lateral comb of eighth segment of many 

 small scales in a large patch. Air-tube rather stout, subfusi- 

 form, about six times as long as width at base; pecten of 17 

 to 20 rather long teeth, occupying basal two-fifths of tube; 

 three pairs of long tufts composed of two or three hairs, the 

 basal one just beyond end of pecten, the intermediate one near 

 middle of tube and out of line. Anal segment slightly longer 

 than broad, ringed by the plate ; lateral hair single ; ventral 

 brush well developed ; and gills four, leaf-like, shorter than the 

 segment, subequal. 



The larvae occur in rock pools associated with the two pre- 

 ceding species. They are very different from those of Culex 

 territans, with which this species was identified by the late 

 D. W. Coquillett (see Coffin, in Shattuck, The Bahama Is- 

 lands, 1905, p. 288). In the present species the breathing tube 

 is rather stout and convex, while in the other it is slender and 

 somewhat concave on the distal half ; furthermore, in that 

 species the dorsal head-hairs are normally single or double, 

 while the tracheae are very slender, these latter being broad in 

 sphinx. 



Culex bahamensis Dyar and Knab. 



This species is known only from the peculiar larvae. Dr. 

 Dyar was not fortunate enough to rediscover them. The habits 



