Scudder.] 258 [December 16, 



of body testaceous, the prothorax with a few irregular, small and 

 faint dusky blotches, the veins of the tegmina dark castaneous. 

 Ocelli moderately large, broadly obovate, distinctly, though slightly 

 convex, each distant from the adjacent eye by its own shorter diame- 

 ter, or even less, and from the opposite ocellus by its own longer 

 diameter or generally less, directed toward the lower margin of the 

 opposite eye. Terminal portion of the lower edge of the fore femora 

 with a pretty sharp, rather shallow excision. Fore trochanter lentic- 

 ulate, as in G. hexadactyla. Tibial dactyls as in that species but not so 

 divergent. Lateral dactyls of tarsi cultrate, the first twice as long 

 as the second, the upper edge of the latter roundly and considerably 

 heeled at the base; acicular claws slender, delicate, finely pointed, 

 about half as long as the greatest breadth of the second tarsal dactyl. 

 Hind tibiae furnished with spines onby at the tip, four short ones on the 

 outer side, four of varying length, but some very long, on the inner 

 side; claws of hind tarsi not two-thirds the length of the terminal 

 tarsal joint, the inner slightly the longer. Tegmina in repose reach- 

 ing but little beyond the middle of the hind femora; wings reaching 

 nearly to the tip of the anal cerci. Eighth and ninth abdominal seg- 

 ments furnished above with lateral longitudinal rows of very long, 

 spinous, rufous hairs; anal cerci greatly thickened at the base for 

 nearly one-fourth their length, about three-fourths as long again as 

 the pronotum. 



Length of body, 19.5-23.25 mm. ; of pronotum, 5.75-6 mm.; breadth 

 of same, cf, 4.25, ? 4.75 mm.; length of tegmina, 5.75-8.5 mm.; of 

 wings, 21-24 mm.; of hind femora, 5.75-6.5 mm.; of anal cerci, 9.5- 

 10.5 mm.; of upper tibial dactyl, 1.8-2.2 mm. 2 d", 2 ?, Peruvian 

 Maranon. 



This species differs from G. hexadactyla Perty, to which it is most 

 closely allied, in its much smaller size and slenderer form, its black- 

 ish head, the size and relative position of the ocelli, the shortness of 

 the tegmina and length of the wings, the length of the anal cerci, 

 and other minor points which will appear from the description. 



It is also distinct from G. cliiliensis Sauss., as far as one can judge 

 from the very brief and vague diagnosis given in the Revue de 

 Zoologie. 



2. Scapterisous oxydactylus (Perty) Scudd. 



A single female brought home by Professor Orton differs from my 

 description of this species in the Memoirs of the Peabody Academy 

 in having no longitudinal lines on the head, the pronotum almost 



