AGLAE CAERULEA. 
263 
AGLAE CAERULEA. 
Plate XIX. Fig. 3. 
Aglae caerulea, Eneyclop. Methodique. — Griffiths Cuvier , In- 
sccla, to!, ii. PI. 107. 
This group, peculiar, like the former, to South 
America, was separated from Euglossa by M.M. 
Lepeleticr and Serville. The antennas are long and 
filiform, inserted in a frontal cavity, consisting of 
twelve joints in the female and thirteen in the male ; 
labial palpi four-jointed; ocelli three; scutellum 
depressed, the sides prolonged behind into two spini- 
form projections. The species are probably parasi- 
tical, for they are destitute of the apparatus requisite 
for collecting pollen. The species represented may 
be regarded ns the type. It is a large insect com- 
pared with the generality of its associates, of a violet 
blue colour, very glossy, and covered, though not 
very thickly, with black hairs ; antennae black ; sides 
of the abdomen, which bear tufts of hair, brownish ; 
wings likewise of that colour with a slight golden 
reflection ; labrum and scutellum very glossy. 
It is a native of Cayenne. 
CENTRIS NOBILIS. 
Plate XX. Fig. 1. 
Centris has the antennas filiform in both sexes, of 
twelve joints in the female and thirteen in the male ; 
the third joint always slender throughout its whole 
length but suddenly enlarged at the tip ; mandibles 
with four teeth on the inner edge ; maxillary palpi 
