Genus Jantidno soma. 257 
tooth is small and the long one blunt; on the smaller claw the 
tooth is basal. 
Length .—4*8 to 5 mm. 
Habitat .—Rio de Janeiro (Moreira and Lutz) ; British 
Guiana; Indiana (Say) ; South Amazon (Austen). 
Time of capture. —Rio de Janeiro, November (Moreira). 
Observations. —This seems to be an abundant South American 
species, which Dr. Lutz calls the Big Wood Mosquito. It stings, 
says Dr. Lutz, in the daytime. 
It is a beautifully brilliant insect when in good condition 
and may at once be known by its long, thick scaled, hind legs 
with white tarsi as described. Although Say only mentions the 
two last hind tarsi being white, there is no doubt whatever of 
these South American specimens being the same as his G.musicus 
from Indiana, described in the “Journal” of the Academy of 
Natural Science of Philadelphia (ii. p. 149). Wiedemann’s 
C. posticatus (Dipt. Exot. i. 43, 2) from Mexico is not the same 
as C. musicus of Say, the last tarsal joint only being white in 
C. posticatus. In the Museum collection is a specimen of this 
mosquito labelled C. putaneus, N. America ; I cannot find any 
reference to this name, and imagine it was only a MS. one of 
Walker’s. 
3. Janhtinosoma Lutzii. n. sp. 
(Fig. 46, PI. XII.) 
Thorax black, with flat spindle-shaped bronzy-black scales in 
the middle and flat spindle-shaped creamy-yellow ones forming 
a broad line on each side of the mesonotum. Abdomen brilliant 
blue and purple, an apical yellow patch extending nearly across each 
side of the segment and pale golden ventral bands. Legs metallic 
purple, bases of the femora broadly pale yellowish ; last two joints 
and apex of the antepenultimate tarsi of the hind legs Arhite. 
9 . Head clothed in the middle with curved and small flat 
irregular golden scales and ochraceous upright forked ones, 
purple at the sides ; palpi and proboscis brown, with brilliant 
metallic purple reflections ; antennae brown. 
Thorax black, with black and bronzy spindle-shaped scales, 
each side of the mesonotum with golden-yellow spindle-shaped 
scales forming broad yellow lateral bands with straight borders 
to the median dark area; scutellum dark brown, Avith small 
bronzy-black spindle-shaped scales; metanotum black; pleurae 
dark brown, Avith creamy-yellow flat scales. 
VOL. I. 
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