11 



Notes os Orthoptera from Northern Peru, collected by 

 Professor James Orton. 



Nearly six years ago I published an account of the Orthoptera ob- 

 tained by Prof. Orton on either side of the Andes of Equatorial 

 South America.^ Prof. Orton has recently placed in my hands an- 

 other collection, made in 1873 in the same general region, nnd which 

 is even richer in novelties than the former. A portion of the collec- 

 tion camti from the banks of the Amazons, anil almost entirely from 

 the Peruvian part of it called the Maraiion. A more extensive series 

 was obtained on the road up the Andes, between Yurim iguas on the 

 Huallagi, a tributary of the Maraiion, to Chachapoyas, via B ilsa Pu- 

 erto and Moyobamba. For the sake of brevity, I shall speak of the 

 specimens from the former locality as from the " Peruvian Maraiion"; 

 of those from the latter as trom the " Eastern slope of the Peruvian 

 Andes." 



It is not a little strange that only five of the species brought home 

 on these two expeditions of Professor Orton should prove identical. 

 This fact, as well as the number of new forms described, shows how 

 well this field would repay the labors of a systematic collector.^ 



The number of new generic types these little collections liave af- 

 forded is also extremely large, while several of the species have other 

 wise a special interest. Excepting in the Blattaria;, the proportion- 

 ate' number of the species of the dilferent families is about the same 

 as in the previous collection ; the mass is composed of Locustarians 

 and Acridians and, with a single doubtful exception, not a single spe- 

 cies of these two families could be referred, either in 18G9 or now, 

 to any previously described. 



Bjsi les the descriptions of the species obtained by Prof Orton I 

 have added those of one or two others related to them, and have in 

 some instances given more precision to the generic determination ^f 

 the insects obtained on the previous expedition. 



GRYLLIDES. 



1. Gryllotalpa maranona nov. sp. 



Head blackish fuliginous, the labrum lighter, sometimes pale; rest 



»Proc. B05t. Soc. Nat. Hist, xii, 330-345; Ent. Notes, ii, 15-30. 



> Professor Orton writes me: "I never before saw such a variety of Orthoptera, 

 especially grasshoppers and walking sticks, as on the rough journey from Balsa 

 Puerto to Moyobamba; it is the paradise of the entomologist." 



