A Synoptical View of the Mosquitoes of British Guiana. 191 
Stethomyia nimba. Theobald. 
Thorax black with silvery lines. 
Proboscis covered with black and bronzy scales. 
Palpi black. Legs unbanded. 
Wings unspotted. (B. G. Med. Annual, 7905, pp. 15, 36.) 
GENUS MyZORHYNCHELLA. Theobald. 
One species recorded from Kanuku Mountains. 
Myzorhynchella nigra. Theobald. 
Proboscis black. Palpi with 4 narrow white bands. Legs with tarsi 
banded white apically ; last three hind tarsi, all white. 
Wings with three large and two small yellow spots on costa. (B. G. Med. 
Annual, 1908, pp. 3, 4, 22.) 
Genus CeELLIA. Theobald. 
Two species recorded from all parts of the colony in which collections have 
been made. KHasily distinguished from M. nigra by the abdominal 
scales and prominent lateral tufts. 
Legs with three hind tarsals white. 
1. Argyrotarsts. R. Desvoidy. 
Legs as above but apex of last hind tarsal with a 
black band. .. x = 55 2. Albimana. Wiedemann. 
(B.G. Med. Annual, 1905, pp. 14, 25, 29, 36. 1906, pp. 65, 66, 72, 73. 1908, 
p- 19.) 
Sud=fFanily Megarbintnae. Theobald. 
Ankylorynchae. Lutz. 
Lynchiellina. Lahille. 
Mr. Theobald includes in this sub-family three genera, of which only Mega- 
rhinus has been recorded from the colony. 
Genus Mecaruinus R. Desvoidy. 
Palpi long in both sexes. Last segment of female palp round or blunt 
as if broken.. Proboscis curved downwards. Abdomen with lateral 
tufts. 
Two species or perhaps three are recorded from the colony. 
1. Palpi of male and female 3rd joint longer than 4th. 
Palpi of male 3rd joint longer than 4th. 
Haemorrhoidalis. 
Fabricius. 
