208 Mr. W. H. Asbmead's 



The Aculeata of these islands, in comparison with the 

 large number of the Tercbrcmtia taken, were decidedly 

 disappointing, since the collection was small, and many 

 genera and species, occurring on other islands of the 

 West Indies, which must occur on both islands, were 

 conspicuously absent. 



The majority of the described species taken, however, 

 appear to have a wide distribution throughout the West 

 Indies, and many of them extend their range into Central 

 and South America. 



Our knowledge of the West Indian Hymenoptera is still 

 too imperfect to afford a basis for a safe generalization 

 upon their origin and distribution, and in lieu of remarks 

 upon their distribution, I have thought it advisable to 

 terminate this contribution with a complete list of the 

 described Hymenoptera of the West Indies, not only as an 

 aid to students, but to show the number of species now 

 known from these islands and the insufficient knowledge 

 we as yet possess of their distribution. 



The arrangement of the superfamilies and families in 

 this contribution is original with the writer, and in accord- 

 ance with his views as enunciated in several recent 

 publications. 



Suborder I. HETEROPHAGA. 



Superfamily I. APOIDEA. 



Family I. APID^. 



Subfamily I. MELIPONIN.-E. 



Genus Trigona, Jurine. 



1. Trigona nigrocyanea, n. sp. 



5 Lengtli to tip of abdomen 2"8 inm. ; to tip of wings 4 mm. 

 Blue-black, clothed with a sparse glittering white pubescence ; 

 ocelli red ; tibia) dark rufo-piceous, the tarsi paler ; antenna) filiform, 

 brown-black, the pedicel and first joint of fiagellum short, wider 

 than long, the second flagellar joint twice as long as the first, the 

 following subequal ; face and pleura closely punctate, the thorax 

 above microscopically shagreened and also distinctly but not very 

 closely punctate ; tegulse smooth, piceous ; wings fuscous, the stigma 

 and veins brown-black ; abdomen rufous, black at base only. 



St. Vincent — Leeward side. Described from one $ 

 specimen. 



