242 American Midland Naturalist Monograph No. 3 



tapering distally, finely crenulate near apex, truncate at tip; terminal claw (Ds- 

 C) minute, blunt, inserted slightly before apex of dististyle. 



LARVA. (Fig. 132). — Head broader than long. Antenna shorter than head, 

 constricted beyond antennal tuft, with portion before constriction spinose, 

 portion beyond constriction more sparsely spined; antennal tuft large, multiple, 

 barbed, inserted at outer third of shaft, extending beyond tip. Head hairs: 

 Preantennal (A) multiple, barbed, reaching nearly to insertion of antennal 

 tuft; loryer (B) and upper (C) multiple, barbed, about as long as preantennal 

 tuft (A); postclypeal (d) single, rather long; sutural (e), trans-sutural (f), 

 and supraorbital small, multiple. Body finely and sparsely spicular. Lateral 

 abdominal hairs double or triple on segments III to VI. Comb of eighth seg- 

 ment of numerous scales in a patch; individual scale rounded apically and 

 fringed with subequal spinules. Siphon four to five times as long as basal 

 width, finely and densely spinose basally, growing progressively more coarsely 

 spined toward apex; pec ten of numerous teeth progressively more widely 

 spaced, extending slightly beyond basal third of siphon; individual pecten tooth 

 with coarse teeth on one side; six to seven multiple, smooth subventral 

 tufts present, two or three of the basal pairs inserted within the pecten and 

 with branches little or no longer than the diameter of siphon. Anal segment 

 slightly longer than wide, completely ringed by the dorsal plate; pigmentation 

 of dorsal plate darker dorsally; lateral hair double or triple; dorsal brush con- 

 sisting of a long lower caudal hair and a shorter 6-branched upper caudal tuft 

 on either side; ventral brush large, restricted to the barred area; gills 2, short, 

 bulbous. 



DISTRIBUTION. — Florida (63); Puerto Rico (136); Bahamas and Virgin 

 Islands. 



BIONOMICS. — This species was collected by Fisk (63) from several breed- 

 ing places, including a cistern containing brackish water at Key West, Florida. 

 Additional recent collections are from Elliotts Key (96) and Boca Chica Key 

 (4th Sv. C. Med. Lab. reports, 1942-1944, unpublished). 



CuLEX (CuLEx) NIGRIPALPUS Theobald 



Ciilex nigripalpus Theobald. 1901, Mon. Culic, 2:322. 



ADULT FEMALE. — Medium sized species. Head: Proboscis dark scaled, 

 usually paler on under side of basal half; palpi short, dark. Broad dorsal 

 region of occiput clothed with narrow pale golden-brown scales and dark 

 erect forked scales; lateral region with a patch of broad pale scales, usually 

 dingy white. Thorax: Integument of scutum brown, covered with fine dark 

 bronzy-brown scales. Pleura with few or no scales; if scales present, rarely more 

 than five or six in any single group. Abdomen: Tergites dark-brown to black 

 scaled dorsally, usually with bronze to metallic blue-green reflection; sharply 

 defined basal white-scaled patches present laterally (occasionally narrow white 

 basal bands dorsally on some segments). Venter pale scaled. Legs: All legs 

 , dark scaled with bronze to metallic blue-green reflection, except for whitish 



