50 Mr. F. Smith on new Species 



dark fuscous cloud at their apex, which covers the marginal 

 and third submarginal cells, and extends to the apex of the 

 wings. Abdomen subpetiolate, and of a vivid golden green. 

 Hob. Santarem. 



Pepsis tinctipennis. 



Female. Length 15^ lines. Black, with blue and green 

 shades in different lights ; wings dark brown, glossy, but not 

 prismatic, with the apex of the anterior wings yellow from 

 the base of the third submarginal cell. Head : the scape of 

 the antennae of a blue tint ; the seven following joints opaque 

 black ; the five apical joints orange-yellow. Thorax : the 

 disk has a bright green tint in certain lights ; the metathorax 

 obscurely tinted with shades of blue or green, and irregularly, 

 strongly, transversely striated ; the legs dark blue ; the tibia: 

 and tarsi thickly set with short spines. Abdomen shining, and 

 reflecting shades of purple, blue, and green. 



Hob. Para. 



Pep>sis fuscipennis. 



Female. Length 9-1 1| lines. Head and thorax obscurely 

 blue ; abdomen black, exhibiting a blue lustre in certain lights. 

 Head : antennas pale yellowish white, with the scape and 

 three, or sometimes four, of the basal joints black ; the third 

 and the fourth joints also occasionally more or less pale at the 

 apex. Thorax : the metathorax more or less covered with 

 pale golden pile, and transversely striated ; wings fuscous, not 

 darkly so, with the apex of the anterior pair milky white ; 

 legs obscure blue ; the tibiae and tarsi thickly set with short 

 spines. Abdomen elliptical ; the second and three following- 

 segments with two very obscure, divergent ferruginous lines 

 in the middle. 



Hob. Ega; Para. 



This may possibly be the P. elongata of St. Fargeau in 

 very fine condition, having golden pile on the metathorax ; it 

 has the wings paler, and it also differs in having the tips of 

 the anterior wings pale ; still I have a suspicion of its being 

 a local variety. P. elongata is from Surinam. 



Pepsis optimatis. 



Female. Length 12 lines. Head and thorax clothed with 

 golden pubescence ; abdomen black, with a beautiful change- 

 able opaline lustre. Head : the antennas orange-red ; the 

 scape black, and with a golden pile. Thorax bright golden ; 

 wings dark rufo-fuscous, with a pale spot in the second dis- 



