A Synoptical View of the Mosquitoes of British Guiana. 203 
Genus Wyromyta. Theobald. 
A species from the colony has been identified as melanocephala by 
Messrs. Dyar and Knab. I have not yet seen the description which 
was published in the Proceedings of the Biol. Socy. of Washington, 
Vol. XIX, p. 140 (1906). 
Genus SABETHOIDES. Theobald. 
Abdomen metallic green, mauve, purple, blue, white and yellow ; white 
lateral spots; venter yellow. Legs, Ist to 3rd tarsals of mid leg 
silvery underneath. 
confusus. Theobald. 
(B. G. Med. Ann., 1905, pp. 23, 38. 1906, pp. 65, 77.) 
As above but without lateral white spots on abdomen. 
undosus. Coquillet. 
(B. G. Med. Ann., 7906, p. 65. 1908, pp. 17, 25.) 
Genus Denpromyta. Theobald. 
Four species occur here, the genus was founded on wlocoma and assulepta 
found by Dr. Low on Demerara river. It is allied to-Wyeomyia and 
differs mainly in the wing scales which are broader and sometimes 
asymmetrical. 
Table of Species. 
A. Prothoracic lobes golden scaled. 
Prothorax with two dark areas. 
Abdomen dusky brown; venter, ochreous. 
(B. G. Med. Ann., 7905, BPD: 22,38. 1906,p.77. 1908, p. 25.) 
Asullepta. Theobald. 
B. Prothoracie lobes not golden. 
Abdomen dusky black, lst segment violet reflections ; yellowish 
venter. 
Thorax unadorned. 
Head with white line round and between eyes. 
luteoventralis. Theobald. 
(B. G. Med. Ann., 1905, pp. 22,38. 1906,p.77. 1908, p. 25.) 
Hind metatarsus longer than tibia. 
quasi-luteoventralis. Theobald. 
(B. G. Med. Ann. 1905 pp. 22, 38. 1906. p. 77. 1908, p. 25.) 
No white libe between eyes. 
B,G, Med. Ann. 1905, pp. 22, 38. 1906, p. 77. 1908, p. 25. 
ulocoma. Theobald. 
