Tr. 
780 
both through study and assistance, scientific research is lastingly indebted 
in the Philippines. 
While this genus possesses characteristics of both Megarhinus and 
Toxorhynchites, it is so entirely different from either of them in those 
characters upon which these two genera are erected that I have not the 
slightest hesitation in placing it as distinct. 
So much incertitude has existed in the matter of palpal segmentation 
that it is most gratifying to have been able to breed and study a large 
series of individuals and by that means to have been able, by careful 
dissections, to found the genus upon certainties. I fear that inability 
to obtain large numbers of individuals in this as in other subfamilies, 
has been the source of no little confusion as to important features. 
I personally do not approve of one-species genera and should have 
preferred studying species in the other genera of this subfamily before 
forming this one, but I am certain that when such study is made other 
species now supposed to belong to Megarhinus and T'oxorhynchites will 
fall here. 
Worcesteria grata gen. et sp. nov. 
Length ¢ 12 millimeters, proboscis 7 millimeters, 2 10 millimeters, proboscis 
7 millimeters, length of wing 8.25-8.75 millimeters; head, thorax and abdomen 
dark, metallic brownish-blue, the head and mesothorax being lighter blue laterally 
as are the prothoracie lobes and the dorsal ridge of the first abdominal segment. 
Legs variegated blue, wine-color and orange-yellow, the last color in the 2 only, 
the leg bands being different in the sexes and containing much white in the Q. 
9, head with flat, light-greenish variegated metallic scales, a few dark, 
crenulately truncated, bastonate scales on extreme occiput near nape (Pl. 1, 
fig. 2) ; region of eyes with lighter scales; 6 long, brown, curved bristles project- 
ing over the eyes which are dark-wine-color or bronze in certain lights; antenne 
sparsely setose, the sete on each segment not more than 5 in number, being 
placed externally at the base of each; first segment covered basally with dark- 
green, apically with white seales, second segment swollen basally, 14 length 
of succeeding segments and having a dorso-internal tuft of greenish-brown scales 
on basal half only; other segments with dense, gray pile; palpi 4 length of 
proboscis, 5-jointed (Pl. 1, fig. 3), first segment as long as wide; second, about 
four times length of first; third, nearly twice length of second; fourth and fifth, 
extremely small, their combined length being less than width of third and their 
width being less than 4 that of antepenultimate. The apex of the third segment 
is concave not rounded, and receives the fourth to half its length (PI. I, fig. 4) ; 
scales of palpi dark-purple, disposed in 2 groups giving the appearance of but 
2 segments, the distal portion of each group is of white seales, those at the apex 
completely covering the fourth and fifth segments; third segment strongly later- 
ally and apically spinose, there being 3 large. spines at extreme apex extending 
beyond fifth segment (not shown in fig. 4). Fourth segment bears a single strong 
spine. The denuded palpus is moderately pilose (PI. I, fig. 4), proboscis § length 
of body, when latter is normal (not shrunken ), dark-purple or wine-color, with 
strong iridescence; the distal segment bilabiate with sensitively setose apex. 
Prothoracie lobes strongly swollen, occupying angle between head and mesono- 
tum, covered with scales of same color as those on head and with a vertical row 
of laterally projecting bristles; pronotum with dark-green, narrow, flat scales 
grading to very light-green laterally and cupreous on posterior margin; a single, 
4 
