156 Journal New York Entomological Society. [Vol. xiv 



Length of body, -7, 15, 9, 18 ; of pronotum, cf, 3-3> ?, 3- 8 5 5 

 of tegmina, - r , 2.85, ?, 3; of hind femora, f, 9, i, 10.5 mm. 

 Habitat. — Island of Trinidad, a single pair in coitu, taken by G. 

 E. Tryhane, of St. Anne's (Coll. L. Bruner). 



67. Schistocerca columbina Thunberg. 



Gryllus columbinus Thunb , Mem. Acad. St. Petersb., IX, p. 399, 425 (1824). 

 Ac-idium (Schistocerca) columbinum Stal, Recens. Orthopt., I, p. 67 (1873). 

 Schistocerca columbina Brunn.-Redt, Proc. Zool. Soc. Lond., 1892, p. 210. 



Although no specimens of this insect are at hand in the material 

 before me it is known to occur on the Island of Trinidad, as well as 

 on the mainland and most of the West Indian Islands. It is smaller 

 than 6". simulatrix Walker, to which it bears some resemblance. 



68. Schistocerca simulatrix Walker. 



Cyrtacanthacris simulatrix Walk., Cat. Derm. Salt. Brit. Mus., IV, p. 610 

 (1870). 



Schistocerca simulatrix Scudd., Proc. Amer. Acad. Arts. Sciences, XXXIV, 

 p. 454 (1S99). 



There are three specimens of what seems to be Walker's simula- 

 trix at hand. They were collected by H. D. Chipman. 



69. Schistocerca pallens Thunberg. 



Gryllus pallens Thunb., Mem. Acad. St. Petersb., V, p. 237 (1815). 

 Acridium {Schistocerca) pallens Brunn.-Redt., Proc. Zool. Soc. Lond., 1892, p. 

 210. 



This last locust is widely distributed over tropical America, and 

 while no specimens are contained in the collections at hand from 

 Trinidad, it is known to occur on that island. 



70. Schistocerca americana Drury. 



There are two specimens, 1 ■$ and 1 + , at hand from Trinidad. 

 They were received from W. E. Broadway. 



The synonomy of this species can be ascertained by referring to 

 Scudder's paper entitled " The Genus Schistocerca." 



71. Osmilia ccelestis Burmeister. 



Acridium ccelestre Burm., Handb. Ent., II, p. 634 (1838). 

 Osmilia ccelestis lirunn., Proc. Zool. Soc. Lond., 1S93, p. 606. 



This insect is represented by a rather large number of specimens of 

 both sexes. They were taken by both H. D. Chipman and G. E. 

 Tryhane. It also occurs on the Island of Grenada, as well as in British 

 Guiana and other parts of tropical South America. 



