of the Amazons Valley. 83 
the eye, so as completely to receive the antenna, except the club, 
which, as just stated, is lodged in the adjoining portion of the pro- 
pectus. The groove is remarkably well developed, more so indeed 
than in any Colydian [have yetexamined. The form of the tibi is 
for me not linear, but what I have called “ trigonate ” or “ subtrigo- 
nate,” 7. €. more or less increasing in breadth from the proximal to 
the distal extremity. It is very probable that Erichson’s species, 
which he has neither named nor described, is different from this. 
Distaphyla mammillaris. 
Pascoe, huj. op. 1. p..104.—Ega? 
Three new species, unknown to me when I described this genus*, 
render it necessary to modify the diagnostic characters of the type, 
which should now stand thus :— 
D. subcylindrica, picea (vel rufo-picea) ; prothorace lobis profunde divisis, 
spatio postico triangulari, minuto, opaco; antennis ferrugineis. 
In the generic characters the prothorax was described as “ very 
irregular anteriorly,” a phrase which was intended to include any 
modification not at that time foreseen ; but in the four species now 
before me it is so uniformly peculiar that, I think, a “ prothorax 
bilobed anteriorly ” (possibly, in some species yet unknown, to be 
united into a single lobe) should be adopted as the most distinctive 
feature of the genus. Mr. Bates does not appear to have made any 
notes of their habits. All the species are covered with small granu- 
lations or tubercles, from each of which generally arises a short stiff 
seta. The scutellum is very small, and just perceptible with a strong 
lens. The fourth abdominal segment is much smaller than the pre- 
ceding, and the first is not larger than the second. The posterior 
coxee are scarcely approximate, and certainly are not contiguous. 
A fourth species, from Mysol, will be described in a separate paper 
devoted to Mr. Wallace’s Colydiide from the Indian Islands. Al- 
though exceedingly like the above, it may be at once distinguished 
by the sides of the prothorax being parallel. 
Distaphyla Batesw. 
D, subcylindrica, obscure picea; prothorace lobis leviter divisis, spatio 
postico parum triangulari, tuberculato; antennis nigris. 
Hab. Ega. 
Subcylindrical, dull pitchy, covered with short stiff sete arising from 
coarse tubercles ; head short, with a semicircular impressed line between 
* Distaphyla is= Ogcodera of Dejean’s Catalogue. 
