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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXVI. 



margin washed with greenish, the colors on the tibiae in the female being 

 similar to those described above from the male but weaker and less 

 sharply contrasted. Head of the male Isabella color, the caudal portion 

 of the gen^ maize yellow; margins of the costa drab, eyes tawny-olive; 

 antennae becoming madder brown distad. Pronotum of the male 

 saffron yellow in the middle of the dorsum, shading laterad to seal 

 brown, this latter being ventrad of the lateral angles, a narrow area 

 along the cephalic portion of the angles, some of the caudal margin 

 of the lobes and a large patch covering the ventro-cauckil portion of 

 the lateral lobes maize yellow. This yellowish area is represented in 

 the female by a narrow edging to the caudal margin of the lobes and 

 a broken dull patch along the ventral portion of the same. 



Measurements. 



A female labeled Cuyaba, Matto Grosso, February, has also been 

 examined. It is distinctly smaller than the female type with the 

 area between the mesosternal lobes less strongly longitudinal, the 

 caudal margin of the disk of the pronotum without the median 

 emargination and the general color of the tegmina brighter. 



Genus .^OLACRIS Scudder. 

 1875. Molacris Scudder, Proc. iioHtoii Hoc. Nat. Hist., XVII, p. 269. 

 Type. — Xipliicera octomaculata Scudder. 



jEOLACRIS BELLA, new species. 



r7/y>«;.— Male; Kio Purus, Brazil. March 15, 1901. (J. B. Steere.) 

 Cat.' No. 12082, U.S.N.M. 



Closely allied to .Eolacris octomaculata Scudder from Napo or 

 Maranon," but differing in the larger size, shorter fastigium, the dis- 

 tinct and nonconfluent tegminal spots, the longer spines on the 

 caudal tibiae and the coloration of the antennjie. No close relationship 

 exists with Molacris caternaulti Feisthamel from Cayenne, the remain- 

 ing species of the genus. 



Size large; form very considerably compressed; surface of the 

 pronotum, pleura, venter and abdomen impresso-punctate. Head 

 with the visible dorsal length very slightly more than half that of 

 the pronotmn; occiput subhorizontal, the interocular region broad, 



«Proc. Bost. 8()C. Nat. Hist., XII, p. 337. 



