AEDES 607 



Larva, Stage IV (plate 116, fig. 399). — Head rounded, wider than long, nar- 

 rowed before eyes, a slight notch at insertion of antennae, front margin broadly 

 arcuate ; both pairs of dorsal head-hairs in threes. Antennae short and slender, 

 smooth, a small tuft at middle ; two long spines before tip, beyond which the 

 shaft is somewhat bent and narrowed and carries an apical spine and two digits. 

 Eyes large, transverse, pointed. Mental plate triangular, excavated at base, a 

 central tooth, and nine on each side, the basal ones a little more remote and 

 sharper. Mandible quadrangular, a filament and a hair before tip ; an outer row 

 of cilia ; a row of fine hairs from angular prominences on outer margin ; dentition 

 of four nearly equal teeth on a process ; a tooth before, a broadly triangular one 

 at base, and two broad, deeply serrate filaments within ; process below slender, 

 furcate, with lines of hairs ; basal angle sharp ; a row of coarse hairs within and 

 one at base. Maxilla elongate, divided by a band-shaped suture ; inner half with 

 rows of stout cilia; a tuft of long hairs at tip ; outer half with a single articulated 

 filament next the suture; palpus about half as long as maxilla, with two large 

 and two small terminal digits. Thorax rounded, wider than long ; hairs abun- 

 dant but not long. Abdomen moderate, anterior segments shorter; lateral tufts 

 of first two segments multiple, the following ones small and short. Tracheal 

 tubes broad, band-shaped. Air-tube large, inflated, elliptical in outline, nearly 

 three times as long as broad; pecten of two or three teeth on the basal third; 

 single tooth a spine with broad base and one or two basal branches. Lateral comb 

 of eighth segment of six separate scales ; single scale elliptical, with heavy outer 

 margin, a long apical spine, a slightly curved subapical one and shorter ones 

 between and below. Anal segment longer than wide, ringed by the weakly 

 chitinized plate ; dorsal hairs a long hair and brush on each side ; ventral brush 

 well developed, extending along ventral line nearly to base. Anal gills short, 

 rounded, shorter than the segment. 



The larvae live in salt water in rock-holes on the seashore. Mr. Busck found 

 them in distinctly brackish water " right at the ocean, below the land edge," in 

 clear water. 



Island of Santo Domingo, West Indies. 



South shore of Santo Domingo, July 11, 1905 (A. Busck). 



This species represents the Jamaican haruspicus in Santo Domingo, both 

 species living in brackish water in rock-holes near the sea. The two species are 

 allied to the more generally distributed fygmaa, but are more specialized in 

 habit, pygmcea being an inhabitant of general rain-filled ground-pools. 



Genus AEDES Meigen. 



Aedes Meigen, Syst. beschr. bek. Eur. Zweifl. Ins., i, 13, 1818. 



Culex (In part) Lynch Arribaizaga, Rev. Mus. de La Plata, i, 373, ii, 157, 1891. 



Heteronycha Lynch ArrlbAlzaga, Rev. Mus. de La Plata, 1, 373, 11, 155, 1891. 



Ochlerotatus Lynch Arrlbaizaga, Rev. Mus. de La Plata, 1, 374, 11, 143, 1891. 



Tmniorhynchus Lynch Arrlbaizaga, Rev. Mus. de La Plata, 1, 374, 11, 147, 1891. 



Aedes Townsend, Trans. Am. Bnt. Soc, xlx, 149, 1892. 



Culex (in part) GUes, Gnats or Mosq., 186, 1900. 



Aedes (in part) Giles, Gnats or Mosq., 343, 1900. 



Stegomyia Theobald, Journ. Trop. Med., iv, 159 (foot-note), 1901. 



Stegomyia Theobald, Ldverp. School Trop. Med., Mem. iv, app., p. ill, 1901. 



Stegomyia Theobald, Journ. Trop. Med., iv, 235, 1901 (without species). 



Culex (in part) Theobald, Journ. Trop. Med., iv, 235, 1901 (without species). 



Aedes Theobald, Journ. Trop. Med., iv, 235, 1901 (without species). 



Stegomyia Theobald, Mon. Culic, i, 98, 283, 1901. 



Culex (in part) Theobald, Mon. Culic, 1, 98, 326, 1901. 



Aedes (in part) Theobald, Mon. Culic, 1, 98, ii, 224, 1901. 



Stegomyia Howard, Mosquitoes, 155, 1901. 



Culex (in part), Stegomyia and Aedes Coqulllett In Howard's Mosquitoes, 235, 1901. 



Stegomyia Theobald, Proc. Royal Soc London, Ixlx, 382, 1902. 



