Vol. XXvii] ENTOMOLOGICAL NEWS. 317 



Males of this species were sent to Dr. Calvert and Dr. Ris. 

 Dr. Ris writes, "It is almost exactly similar to a few Acan- 

 thagrions taken by myself in Bahia in 1890; I have considered 

 them nearly typical gracile." Dr. Calvert says, "It is nearer 

 gracile minarum than no. 2 (indefensmn} is. I am inclined 

 to so consider it; almost the only objection is the presence of 

 black stripe on second lateral thoracic suture." In view of 

 these opinions any comment on the difficulty of recognizing 

 this species is superfluous. 



In Calvert's key to the males of Acanthagr'wn of the gracile 

 group (Od. Neotrop. Reg., Ann. Carnegie Mus., Vol. VI, pp. 

 161-2) keiinedii will run out to gracile or g. iiiinanini. J\Iina- 

 rum was described by de Selys from material from Minas 

 Geraes. It is possible it may prove to be specifically distinct 

 from gracile, but there is no reason to think it is the same as 

 the species here described from Trinidad, ridiia de Selys, 

 from Venezuela, might possibly be expected in Trinidad, but 

 it is not represented in the material before me unless ascen- 

 dcns should turn out to be a synonym, which I think is im- 

 probable. 



Compared with material from Guatemala determined by 

 Calvert as gracilc* males of kenncdii differ in the blue color of 

 the head, thorax and basal abdominal segments of gracllc be- 

 ing replaced by green and yellowish, thus approaching asccn- 

 dens. A comparison of the descriptions will show that black 

 ;s more extensive on the head and thorax of kenncdii than of 

 gracile. In posterior views of the male appendages, the su- 

 perior appendages of c/racile- are seen to be longer (higher) 

 with the superior rounded angle reaching well above the con- 

 striction in the dorsal elevation of segment 10; in kenncdii 

 the appendages reach this constriction but do not extend above 



[*Since this paper was written, a study of the penes of specimens in 

 the Cornell and Harvard collections has brought to light two more spe- 

 cies included under the name gracile. As both are from Hra/il it may 

 be that one or the other of these will be found to agree with the type 

 of gracile in the Selys collection. Neither of these Brazilian species are 

 described or figured in Mr. Williamson's article or in my own in this 

 number of the NEWS. C. H. KENNEDY.] 



