Genus Megarhinus . 
89 
Banks describes a fourth genus Worcesteria on account of 
the $ palpi' having three minute terminal segments. " Some 
Toxorhynchites have one, some two, and others three, so that 
the genus Worcesteria is mentioned here as a doubtful genus. 
Genus MEGARHINUS. Robmeau-Desvoidy (1827). 
Lynohiella. Lahille. 
Essai sur les Oulicides, M6ro„ Soc. d’Hisfc. Nat. do Paris, III., 412 (1827), 
Robmeau-Desvoidy; Mono. Oulicid. I., 215 (1901); III., 113 (1903) ; 
IV., 128 (1907), Theobald; Os Gulicideos do Brazil, 125 (1905), 
Peryassu. 
Eleven definite species are known in this genus, and possibly 
others should be placed here. But as the genus has so far only 
been found in N. and S. America and the West Indies, I am 
inclined to believe that the other species of Megarhinus described 
only from ^ ? s, from Ceylon, India, E. Indies, &c., belong to 
Toxorhynchites. 
The Megarhinus tabulate as below :— 
A. Apex of abdomen with no lateral tufts. 
a. Tarsi with some white bands. 
Thorax bright brown, a median blue 
line, one on each side, a blue 
patch over wings and on pro- 
thoracic lobes; scutellum deep 
purple in middle, pale green and 
blue at sides.............................. ferox. Wiedemann. 
Thorax with metanotum in $ green, 
hind region blue and yellow; venter 
with central blue line, 6 blue...... fluminensis. Neiva. 
Thorax greenish black with few 
coppery scales, metallic blue an¬ 
terior ^and posterior margins and 
an ill-defined median blue line 
and patches at middle of sides; 
scutellum metallic blue............... hyjpojptes. Knab. 
aa. Tarsi unbanded. 
Abdomen olive green ..................... longipes. Theobald. 
B. Abdomen lateral red tufts. 
3rd segment of palpus as long as the 
4th .......................................... separatus. Arribalzaga. 
3rd segment of palpus longer than 
the 4th ............................. 
haemorhoidalis. Eabricius. 
