34 THE ENT0M0L0GI8T. 



area=basal area of inetathorax ; vibriseae=hairs forming a fine 

 ciliation on hind margins of abdominal segments 1 and 2. 



Agapostemon. 



(1.) A. sicheli, Vacbal. — The museum contains a male of this 

 extraordinary species from Mexico, out of F. Smith's collection. 

 The flagellum is black, twisted like a corkscrew. The insect has 

 the hairy eyes and plumose pubescence of Cameron's Cainoha- 

 lictus. 



(2.) A. rhopalocera, Sm. (T.) $ . — Easily known by the very 

 long antennae, with the last joint black and somewhat broadened. 

 The yellow band on first abdominal segment has on it two dark 

 spots. Eyes naked. 



(3.) A. nasutus, Sm. (T.) $. — Easily known by the broad, 

 yellow, turned-up anterior margin of clypeus, like a hog's snout. 

 Abdomen with six dark bands ; head broader than long ; eyes 

 naked. 



(4.) A. ceruginosus, Sm. (T.) $. — Buns to this in Vachal's 

 table, but punctures of scutellum, though somewhat larger than 

 those of mesothorax, are still extremely dense. 



Corynura. 

 Abdomen red, second segment not rapidly broadening, 

 and not much broader than first ; antennal joints 

 9 to 11 strongly crenulate; first r. n. joins second 

 s. m. (which is broad) very near its end (Chile). 



abdominalis, Sm. (T.). 

 Abdomen not red . . . . . . . . 1. 



1. Head and thorax bright green all over ; second s. in. 



parallel-sided, first r. n. meeting second t. c. ; 

 first abdominal segment narrow, second rapidly 

 broadening to apex ; antennas very much shorter 

 than in abdominalis or marginata (which Chilian 

 species have very long antennas) 



jucunda, Sm.(?(T.); n. syn. pseudobaccha, Ckll. 1901. 

 Head and thorax at least largely dark . . . 2. 



2. Marginal cell and costa beyond fuliginous ; first r. n. 



meeting second t. c. ; hind spur with three spines ; 

 first abdominal segment narrow, but much broader 

 at apex than at base, with no depression between it 

 and second along lateral margins (Mexico) discolor, Sm. $ (T.). 

 Wings yellowish ; marginal cell and costa beyond not 



fuliginous ........ 3. 



3. Hind margins of abdominal segments white, edged in 



front with a sort of golden-brown ; first and 

 second abdominal segments both very narrow, 

 second not expanding apically to any extent ; 

 antennas very long ; second s. m. very broad, re- 

 ceiving first r. n. near its end (Chile) . marginata, Sm. $ (T.). 

 Hind margins of abdominal segments not so coloured : 



