Genus Xylocopa. 285 



with the two I have giA-en as synonyms ; the original 

 description is, I think, condiislve ; the affinity of the species 

 to that of X. frontalis, the elevation of the lateral frontal 

 ridges, are clearly pointed out by Fabricius. 



The female is a large black insect that has a ridge on 

 the vertex of the head ; it is widely interrupted in the 

 middle, and is more or less elevated laterally, forming 

 tubercles or horns ; they vary greatly in their elevation, 

 but are always outside the posterior ocelli; in X. frontalis 

 they are in front of them. I have compared the male with 

 St. Fargeau's type ; its pubescence is of a fidvous-red, but 

 old examples lose this brightness and become tawny-yel- 

 low ; the antennas are slightly friscous above, the anterior 

 femora above, and the intermediate and posterior pairs, are 

 entirely pitchy-black ; the apex of the abdomen is densely 

 covered with long rufo-fulvous pubescence ; wings flavo- 

 hyaline, slightly fuscous towards their apical margins. 

 Length of the female thirteen to fourteen lines ; of the 

 male twelve lines. 



Hab. — S. America; Cayenne; Brazil; Demerara; 

 Mexico; Barbadoes. 



84. Xylocopa morio. 

 Apis morio, Fabr. Ent. Syst. ii. 315, $. 

 Xylocopa morio, Fabr. Syst. Piez. 338 ; Latr. Ins. iii. 

 380; "Halid. Trans. Linn. Soc. 

 xvii. 319; Smith, Cat. Hym. Ins., 

 Apida3, ii. 359. 

 Xylocopa nitens, St. Farg. Hym. ii. 176, ?. 

 A large black species, its pubescence black ; shining, with 

 the thorax in the middle, above, and the base of the abdomen, 

 impunctate ; the head closely punctured, Avith an elevation 

 in front of each of the posterior ocelli ; the anterior angles 

 of the clypeus subtuberculate ; the sides of the face pu- 

 bescent ; wings dark brown, with a bright green and violet 

 iridescence. Length 16 lines. 



Hab. — Amazons; Nicaragua; Demarara; Mexico. 



" "" 85. Xylocopa ceneipennis. 

 Xylocopa (Bneipennis, De Geer, Mem. iii. 573, pi. 28, 



fig. 8, $ ; St. Farg. Hym. ii. 



186; Smith, Cat. Hym. Ins., 



Apida?, ii. 360. 

 Black : the pubescence black ; the disk of the thorax. 



