Dyar and Knab New Species of Mosquitoes. 139 



abdomen black, pale beneath ; legs dark, femora and tibiae pale below, 

 middle pair without whitish on tarsi above ; hind pair with the tarsi from 

 side view silvery at the bases of the joints. 



7 specimens, Baracoa, Cuba, September, 1901 (A. Busck). 

 Type. Cat. No. 9992, IT. S. Nat. Mus. 



Wyeomyia guatemala sp. nov. 



Prothoracic lobes silvery white ; head black on the occiput, a very nar 

 row white margin to the eyes, distinct at vertex and sides, nearly obsolete 

 at the middle. Body and legs colored as in the other species of this group. 



Two specimens, Trece Aguas, Alta Vera Paz, Guatemala, April (Schwarz 

 and Barber). 



Type. Cat. No. 9994, U. S. Nat. Mus. 



Wyeomyia fratercula sp. nov, 



Prothoracic lobes silvery white; head black behind, a square, diagonally 

 placed, white spot on the vertex, the sides below also white; front tibiae 

 above bronzy with only a slight blue reflection. 



One specimen, Martinique, W. I., July (A. Busck). 



Type Cat. No. 9995, U. S. Nat. Mus. 



Wyeomyia sororcula sp. nov. 



Prothoracic lobes silvery white ; head black behind, a square, diagonally 

 placed, white spot on the vertex, the sides below also white, less broadly 

 and squarely so than in W. fratercula ; front tibiae dark metallic-blue 

 above. 



53 specimens, San Francisco Mts., Santo Domingo, W. I., August and 

 September (A. Busck). 



Type. Cat. No. 9996, U. S. Nat. Mus. 



The larva of this species has been described under the name Wyeomyia 

 grayii Theob. (Journ. N. Y. ent. soc., xiv, 228, 1906), as identified by Mr. 

 Coquillett. W. grayii was described from Santa Lucia, and is most proba 

 bly specifically distinct from any of the forms before us. We can not be 

 clear on this point, for Theobald's description of grayii makes no mention 

 of the color of the prothoracic lobes, so we do not even know if grayii be 

 longs to the present group. However, each island seems to have its own 

 species in this group of Wyeomyia, and the rule will probably hold good in 

 this case. 



Wyeomyia pseudopecten sp. nov. 



Prothoracic lobes entirely dark ; occiput blackish with a lighter brown 

 central stripe; eyes broadly margined with white. 



8 specimens, Trinidad, B. W. I. (A. Busck, F. W. Urich). 

 Type. Cat. No. 9997, U. S. Nat. Mus. 



The larvae of this form were described as W. ulocoma Theob. (Journ. 

 N. Y. ent. soc., xiv, 229, pi. xvi, fig. 73, 1906), following Mr. Coquillett's 

 determination, with which we can not agree after seeing the specimens. 

 W. ulocoma was described from Guiana and is, no doubt, a distinct species. 



