Scudder.] 330 [February 24, 



Omoiotelus crocicollis Lac. Napo River. 



Erotj'lus Debauvei De May. Between Quito and Napo. 



Corynomalus cinctus Fabr. Napo River. 



And eighteen other undetermined species. 



Notes on Orthoptera Collected by Professor James Or- 



TON ON either SIDE OF THE AnDES OF EQUATORIAL SoUTH 



America. By Samuel H, Scudder. 



Hitherto, we have known almost nothing of the Orthoptera of the 

 region explored by the party under Professor Orton. Chili on the 

 south and New Grenada on the north are well represented in Eu- 

 ropean cabinets, but the region midway between them has been rep- 

 resented in orthopterological science by a few scattered descriptions, 

 principally of Phasmida and BlattaritB. It is therefore greatly to be 

 regi-etted that these explorers did not bring home something more 

 than this mere handful of specimens, which have proved such a com- 

 paratively great addition to our knowledge of the Ecuadorian fauna. 

 A single hour's well directed search would certainly have trijiled the 

 number of species. Still we may congratulate ourselves upon what we 

 have obtained, since thirty of the forty species enumerated are new 

 and require the establishment of five additional genera ; of these 

 species all of the Gryllides, Locustarite, Mantidaj and ForficulariiE, 

 and all but one of the Aci*ydii are new; while only one of the four 

 Phasmida and three of the nine Blattarite have not been described; 

 two of the genera, Tropidacris and Lophacris have not been charac- 

 terized here, because they form the subject of comparison with the 

 other gigantic Acrydians, in the succeeding paper. 



GRYLLIDES. 



1. Nemobius Ortonii nov. sp. 



Head luteous, varied above and on the vertex with dark fuscous 

 and with two fuscous points on the fi'ont, at the base of the antennse 

 interiorly; mouth i)arts pallid; antennte luteous, annulated distantly 

 and minutely.with fuscous. Pronotum luteous, with a slight median 

 furrow; the anterior and posterior borders with a narrow, and the mid- 

 dle of the sides with a longitudinal, wavy, broader line of black ; the up- 

 per surface variegated with black and furnished with short black hairs; 

 on either side of the middle, but not reaching the furrow, and situated 

 just in advance of the middle, a broad naked transverse stripe, reach- 

 ing the lateral black band, twice as broad above as below. Tegmina 



