VOL. 



J"'] PROCEEDINGS OF THE NATIONAL MUSEUM. 193 



Although the specimens are alcoholic, the long stag-horn-like cerci of 

 the male will hardly leave room for doubt as to its identity with cornu- 

 ccrvi of Brunner. 



Family ACRI1>IID,E. 



Schistocerca melanocera Stal. 



There are thirty-eight specimens of this beautiful large locust (col- 

 lected — sixteen on Indefatigable Island, fifteen on Charles Island, three 

 on James Island, four ou Albemarle Island, and six on Duncan Island). 

 They are somewhat larger than our americana and the oriental pere- 

 grina, with the wings longer and more ample. It is therefore well 

 equipped for long flights, which it evidently sometimes takes. 



There are also four specimens, from Chatham Island, of a much 

 smaller locust belonging to the same genus with the preceding. 

 Whether or not it is a described species I am unable to say until after I 

 have had the opportunity of examining several works upon these insects 

 that I do not have in my library. It is a diminutive of americana in 

 many respects, the females being only a trifle over 1\ inches in length, 

 while the males are even smaller. 



In addition to the specimens above enumerated the collection also 

 contains four pupae of some member of the same genus, and perhaps 

 of the preceding species, since they too were taken on Chatham Isl- 

 and. 



Among the others from Chatham Island are two specimens of Acridii 

 belonging close to the genus PezotettU; but I do not care to definitely 

 place them, since one is immature and the other has no abdomen. The 

 tegmina and wings of the mutilated one are rudimentary, and it evi- 

 dently measured 25""" in length. The posterior femora are marked with 

 three moderately broad, dusky bands, both internally and externally. 



A small specimen, a male, of a locust that at first glance reminds one 

 of the lined Stenobothri on account of the trivittate coloring of the 

 head, prouotum, and tegmina, but which, upon a closer inspection, is 

 found to be an Acridiid, is placed in the genus Euprepocnemis. It is 

 probably au uudescribed form. Indefatigable Island. 

 Trimerotropis placida? Stal. 



Two specimens of a small Trimerotropis are placed here, although 

 Saussure in his "Prodromus CEdipodiorum' , makes it a synonym of Tr. 

 ocliraceipennis (Blanch.). Length of body, 9, L'O to c /2 millimeters. 

 James Island. 



Family BLATTID.E. 

 Periplaiieta americana Linn. 



Ten specimeus of this cosmopolitan cockroach were collected ou 

 Chatham Island. 



Proc. N. M. 89—13 



