MUSEUM OF COMPARATIVE ZOOLOGY. 23 



double the length of the tegmina. Ovipositor as long as the body, luteo- 

 castaneous. Cerci very long, brown, clothed thinly with very long fine hairs. 



Length of body 16 mm.; tegmina 11.5 ram.; wings beyond tegmina 10 mm.; 

 hind femora 11 mm.; ovipositor 15.5 mm.; eerci 12.5 mm. 



Nine immature specimens from Charles and Chatham Islands, all but two of 

 tbem males, agree in coloration and general appearance with the single female 

 from Albemarle Island described above, so that there can hardly be a doubt 

 that they belong together. The only difference is that the abdomen of the 

 immature specimens is very faintly and very obscurely mottled with dull red. 

 U. S. Fish Commission, 1888, 1891. 



While resembling G. luctuosus Serv. more than any other species known to 

 me, and having like it an ovipositor as long as the body and very long wings, 

 this insect differs from all the species mentioned by Saussure in the lack of a 

 tympanum on the inner face of the fore tibiae, by which it is distinctly allied 

 to the genus Gryllodes. It differs further from G. luctuosus in the three-branched 

 mediastinal vein of the female tegmina, the greater relative length of the ovi- 

 positor, and the darker color of both body and tegmina, the latter of which are 

 marked in much the same way. 



Gryllus sp. 



A second species of Gryllus, but unfortunately represented in the collections 

 only by three female pupte, occurs on Charles Island. It differs from pupge 

 from the same island and from Chatham (all referred to the preceding species 

 with only the doubt inherent in their immature condition) in the decidedly 

 narrower tegminal pads and in coloration, being much and conspicuously mot- 

 tled, especially upon the abdomen. The pronotum is less enlarged anteriorly, 

 but otherwise, and especially in the lateral lobes, of the same form; the basal 

 color, however, is not piceous but polished blackish castaneous, the front of the 

 lateral lobes and both front and posterior portions of the dorsum more or less 

 fusco-luteous in longitmlinal dashes. It is of a slightly larger size at what is 

 apparently the same age. 



Subfamily MYRMECOPHILIX.E. 

 Cycloptilum erraticum. 



Plate III. Figs. 6, 7. 



Head yellowish testaceous, the clypeus dotted with fuscous increasingly 

 from base outward, the lower portion, Tvith the labrum, completely infuscated; 

 eyes subtriaiigular, broadest abo^-e; maxillary palpi testaceous, the last joint 

 much enlarged, oblir^uely truncate, and as long as the third; antenna; much 

 longer than the body (apparently twice as long but broken), the basal joint the 



