. -8o— 



CEcanthus niveus, Serville. 



" fasciatus, Fitch. 



" angustipennis, Fitch. 



" bipunctatus, DeGeer. 



These insects reach maiurit}' in late |inie and in July. Concerning 

 angustipennis ciud /ascia/us there lias been much question, but they are, 

 I think, distinct from niveus. Their structure is not the same and their 

 stridulation is different. That o^ niveus is a beat, beat, pulsating sound ; 

 that of angustipennis, a faint continuous whir lasting only about five 

 seconds with an equal interval of rest, and that o{/asciatus, a long and 

 comparatively loud, continuous whir often lasting several minutes. In 

 addition these insects are not often found iniiabiting the same bushes 

 and trees. Their nuptial atientions are amusing. I have seen the 

 "slender fZ.r(/;///^«.s' " dovour its pupa skin after ariving at the perfect 

 state. 



LOCUSTID^. 



Ceuthophilus maculatus, Harris. Sept. 



Cyrtophyllus concavus, Hani- Lite July and Aug. 



Amblycorypha oblongifolia, DtCietr. Aug. 



" rotundifolia, Si mlder. August 2ik1. 



Microcentrum retinervis, IJurm. Aug. 



Scudderia curvicauda, Dcdeer. Aug. 6ih. 



Conocephalus ensiger, Planis. July gth. 

 " exilicanorus. Davis. Aug. 



This insect is plentiful along the salt water creeks in certain localities 

 on the Island and its stridulation as well as its form resembles that of 

 ensiger more than any other native Conocephalus. We cannot count with 

 any accuracy in ejtsiger the number of times one wing ia drawn over the 

 other as indicated by the rise and subsidence in the song, but exi/is- 

 canorus is such a slow singer that this estimate can be easily made, one 

 wing being rubbed on the other about 115 times in a minute. The 

 species devours the heads of the meadow grass {Spartina) and it was 

 while thus employed that I first observed the lemale insect. When de- 

 scribing the species (Canadian Entomologist, Vol. XIX, p. 56), only the 

 males were mentioned, but it is sufficient to add that the ovipositor is 37 

 mm. in length. 



Conocephalus dissimilis, Serv. August. 



" robustus, Scudder. August. 



Xiphidium fasciatum, DeGeer. August. 

 brevipenne, Scudder. 

 " vulgare, Harris. July Sth. 



" concinnum, Burm. July. 



Thyreonotus dorsalis, Burm. 



" pachymerus, Burm. 



ACRIDID^. 

 Pezotettix scudderi, Uhler. Aug. 

 Acridium alutaceum, Harris. Aug. 

 " rubiginosum, Harris. Aug. 



" americanum, Drurv. 



