Genus Myzomyia. 29 
sent to the Royal Society by Drs. Christophers and Stephens, 
but just previously described as Giles’s Listoni by Capt. Liston. 
The species is very closely related to M. culicifacies, but has 
more than three pale fringe spots. The long black basal part of 
the costa is also very characteristic, as also is the pale third 
longitudinal vein. 
The only other unbanded legged Indian species related to it 
are M. culicifacies, Giles, and M. Turkhudi, Liston ; the first has 
the largest light costal area at the base of the wing and the 
forked scales of the head mostly dark in the 9,.and the 9 palpi 
with two narrow rings and a white tip, and has only three pale 
fringe spots. 
M. Turkhudi (and M. Hispaniola) differ in having the apex of 
the palpi black in the 9. 
M. Listont is abundant in the malarious district of Duars, 
and is a prominent malaria bearer. 
Synonymy.—The species described by Liston in the Indian 
“Medical Gazette” (vol. xxxvi. no. 12, Dec. 1901) as A. Listoni, 
Giles, is not Giles’s A. Listont at all—it is my Christophersi 
and the fluviatilis used as a MS. name by Drs. Stephens and 
Christophers. 
In Liston’s figure there are given white spots at the knees 
and tibial joints ; these do not show in any specimen I have 
seen, and I find in the text of his description “legs black 
throughout.” Capt. Liston has gone over the specimens with 
me and we settled the synonymy between us. 
Further notes.—Mr. Aitken took this species in a cow-house 
and also in a shed in which goats were kept. It is the commonest 
larva in rice-fields in parts of the Goa district. At Diggi, on one 
of the principal trade routes to Goa, Mr. Aitken found clerks and 
peons at the station suffering from malaria ; close by he found 
the larvae of this species in great numbers, in a pool formed by 
a dam across a small stream where it was not shady. 
The larva and tts habits—The larva has four simple frontal 
hairs like culicifacies (Fig. 17, f). 
Mr. Aitken sends the following description of the larva :— 
‘‘The head and the thorax are broad, the abdominal segments 
decrease rapidly from the first to the last and are very sharply 
defined. The lateral bristles are long and stout. But the most 
definite mark is the shape of the thorax, which is not round or 
oval, but distinctly quadrilateral and broader behind than before. 
The back of the head is as broad as the front of the thorax, so 
