AMERICAN HALICTINE BEES IN THE BRITISH MUSEUM. 37 



(10.) M. calliope, Sm., from Ega, Brazil, was never pub- 

 lished. I should refer it to Augochlora, with the following 

 characters : — 



Augochlora calliope (Smith) n. sp. 5 . 

 Head, thorax, and abdomen dark purple ; face brilliant golden 

 shining with coppery ; clypeus very sparsely punctured ; mandibles 

 dark ferruginous ; ocelli moderate ; area with a beautiful crimson 

 lustre (orange-golden lustre in janthina), and delicately striate ; scu- 

 tellum not bituberculate ; hind spur with very few long spines ; bair- 

 brush at apex of basal joint of hind tarsi orange-fulvous ; venter of 

 abdomen with quite abundant white hair; first r. n. joining second t.c. 

 (entering third s. m. near base in janthina] ; second r. n. joining third 

 s. m. at its end ; stigma large. 



Augochlora festivaga D. T. {/estiva, Sm.) ^ (T.). 

 Santarem. — This is a peculiar species, in some things suggestive 

 of Corynura and Megalopta ; it has gigantic ocelli, such as are not seen 

 in Megalopta idalia ; nor has it any vibrissse. Face white-pruinose at 

 sides, much narrowed below ; clypeus prominent, its central part 

 yellow ; scape yellow, with tbe apex brown ; ocelli large for Augochlora ; 

 mesothorax shining, smooth ; area shining, slightly rugose, not 

 striated ; each side of metathorax with a very remarkable dense patch 

 of slightly yellowish cotton-like pubescence ; posterior face of meta- 

 tborax shining, longitudinally sulcate; legs yellow; abdomen with the 

 first two segments, and base of third, shining fulvous ; wings hairy ; 

 second s. m. very narrow, with parallel sides ; first r. n. joining second 

 t. c. ; fourth ventral segment of abdomen with middle of apical margin 

 produced. 



Halictus nanus [Augochlora nana, Sm.) (T.). 

 Very small ; head and thorax yellowish-green, abdomen and legs 

 entirely fulvous ; inner orbits not emarginate, but gently concave ; 

 first r. n. joining second s. m. at its end ; outer nervures weak as in 

 Chloralictus. 



Halictus aspasia [Augochlora aspasia, Sm.) (T.). 

 2 . Inner orbits gently concave, not emarginate. Front, vertex, 

 mesothorax, and some adjacent parts, entirely covered with a dense 

 moss-like fulvous tomentum ; abdomen largely covered with a similar 

 tomentum, and its tegument fulvous, the bases of the third and fonrtb 

 segments becoming black (but this colour mostly concealed by tbe 

 pubescence) ; venter dark red-brown with fulvous bands ; first and 

 second dorsal segments without vibrissse ; area strongly defined, 

 strongly longitudinally striate-ridged ; tegulte fulvous ; first r. n. joins 

 second s. m. before its end ; nervures very pale, outer nervures 

 weakened as in Chloralictus : hind spur with few spines. 



