WYEOMYIA GRAYH 135 



below, white ; two setae at the vertex and a row of small ones along margin of 

 eyes. 



Prothoracic lobes elliptical, well separated, clothed with flat scales, dark 

 brown with slight bronzy and blue reflection, the base silvery ; a row of setae 

 along anterior margin. Mesonotum clothed with elliptical, flat dark-brown 

 scales with a bronzy and blue reflection ; scales below lateral angles dull bluish 

 gray, setae over roots of wings brown. Scutellum trilobate, with vestiture sim- 

 ilar to and continuous with that of mesonotum, each lobe with a small tuft of 

 black bristles. Postnotum elliptical, prominent, dark brown, a group of small 

 setae near posterior margin. Pleurae dark brown, coxae luteous, clothed with 

 elliptical, flat silvery-white scales. 



Abdomen subcylindrical, compressed, truncate apically and with many long, 

 dark-brown terminal setae; dorsal vestiture black with a slight metallic reflec- 

 tion ; venter yellowish white, colors separated at sides in a straight line. 



Wings moderate, hyaline; petiole of second marginal cell one-third as long 

 as its cell; that of second posterior cell shorter than its cell; basal cross-vein 

 distant much less than its own length from anterior cross-vein; outstanding 

 scales of veins ligulate, black, with bronzy reflection on costa, broader and 

 denser on second to fourth veins apically. Halteres whitish with black knobs. 



Legs rather long and slender, black, with a bronzy and blue reflection, the 

 femora whitish beneath at base; tibiae and tarsi with a stronger bronzy luster 

 beneath ; tarsi without white markings. Claw formula, 0.0-0.0-0.0. 



Length : Body about 3 mm. ; wing 3 mm. 



Life history and habits unknown. 



St. Vincent, West Indies (S. W. Williston). 



Professor Williston has kindly presented us with one of his types, a female. 

 The species was described in A'edes, but belongs to Wyeomyia. Professor Willis- 

 ton has inadvertently reproduced the figures of antennae and hypopygium of 

 this sabethine as typifying those structures for the genus A'edes (Man. No. Am. 

 Dipt., 3 ed., p. 27, fig. 3, and p. 36, fig. 4). 



WYEOMYIA GRAYH Theobald. 



Wyeomyia grayii Theobald. Mon. Cullc, 11, 269, 1901. 



Wyeomyia grayii Theobald, Mon. Cullc, 111, 311, 1903. 



Wyeomyia pertwrians Blanchard (not WllUston), Lea Moust., 424, 1905. 



Wyeomyia grayii Theobald, Mon. Cullc, v, 580, 1910. 



Obioinai. Descbiption op Wteomtia gbatii: 



Thorax testaceous-brown, with dusky scales; pleurae ochraceous, densely clothed 

 in parts with broad white scales. Abdomen dusky black above; venter ochraceous. 

 Legs black, coxae and venter of the femora ochraceous; ungues of the $ equal and 

 simple; metanotum with four chaetae placed quadrangularly; proboscis not quite as 

 long as thorax and abdomen. 



$. Head covered by flat broad scales, dull purplish in the middle, ochraceous at 

 the sides, and white between the eyes; in some specimens the ochraceous scales 

 border the eyes as well; clypeus ochraceous-brown; antennae almost black, with pale 

 pubescence, short, only a little more that half the length of the proboscis, hairs long, 

 bases of the joints with narrow pale bands; palpi short, black scaled; proboscis 

 black, long, and thin, swollen at the tip, nearly as long again as the antennae, apex 

 pilose; eyes deep purplish-black. 



Thorax testaceous-brown, covered with flat, spindle-shaped, dusky-black scales; 

 over the roots of the wings and along the posterior part of the mesonotum are 

 thickly spread flat dusky-black scales, of similar form to the flat head scales; bristles 

 black; scutellum ochraceous, with four long black bristles and two very small ones 

 to the central lobe, with overlapping flat dusky scales, which on the lateral lobes 

 form a small black patch; the lateral lobes have large and small black bristles; 

 metanotum bright brown, with purplish reflections, and with a little tuft of bristles 

 on Its posterior half, arising from black spots, so that their presence can always be 

 detected even If the bristles have gone; these bristles are arranged near the apical 

 end of the metanotum quadrangularly, one bristle marking each corner, the two 



