346 PROCEEDINGS OF THE ACADEMY OF [NoV., 



Coloration. Entire insect glabrous. Head mummy brown, 

 mouthparts and proximal antennal joints dresden brown, the an- 

 tennae deepening to prouts brown. Pronotum mummy brown 

 shading to buffy eaudad, lateral portions buffy. Tegmina mummy 

 brown, paler toward the external margins. Exposed portions of 

 wings broadly suffused with mummy brown along sutural margin 

 and distad, narrowly suffused with the same color along distal 

 portion of costal margin, remaining portions buffy. Abdomen 

 cinnamon brown, deepening to dark chestnut brown proximo-laterad 

 on proximal portions of tergites, the ultimate tergite entirely of this 

 color. Pygidium and forceps dark chestnut brown, the latter paling 

 to dresden brown in proximal portion. Limbs suffused buffy. 



The type is unique. 



Microvostox parvus (Biirr) 



1912. Spongovostox parvus Burr, Ann. k. k. Naturhist. Hofmus. Wien, 

 XXVI, p. 336, fig. 12. [cf : Tapanokoni, Dutch Guiana (tj^e); George- 

 town, British Guiana.] 



Cartago, Costa Rica, 1600 meters, (C. Picado), 1 cf . 



The present specimen agrees fully with Burr's figure and very 

 short analysis except in size.^ Length of body 5.3, length of prono- 

 tum, .6, caudal width of pronotum .7, length of tegmen L2, length 

 of exposed portion of wing, .6, length of forceps L8 mm. 



It belongs to the same species group as hilineatus (Scudder) and 

 pygmaeus (Dohrn), differing from the genotype, alter (Bm-r), and 

 other forms of that species group, in the more flattened head, which 

 shows a closer approach to the type developed in the genus Spongo- 

 vostox. 



Microvostox chopardi'" new species (Plate XIII, figures 6 and 7.) 



This species is apparently closely related to Borman's Spongi- 

 phora similis.^^ Compared with the original description of the male 

 of that species, the male before us is found to differ in the smaller 

 size, broader pale coloration of the lateral and caudal margins of the 

 pronotum, longer exposed portion of wings, entirely blackish limbs 



^ The type is given as 3.5 mm. long, the forceps 1.5 mm. It is poss-ble that 

 when comparison with the type of parvus can be made, the specimen here re- 

 corded may prove to be specifically distinct. 



^" We take great pleasure in naming this handsome little species in honor of 

 our distinguished friend Monsieur Lucien Chopard, whose excellent contributions 

 to the literature treating of Orthoptera are a constant source of pleasure to us. 



1^ Though that species has been referred by Burr to the genus Vostox, we 

 believe that examination of the type will show it to be a member of our sub- 

 sequently described genus Microvostox. 



