1913.] NATURAL SCIENCES OF PHILADELPHIA. 325 



closer to the former. With Parossa it agrees in the general form of 

 the occiput and interocular region, the reduction of spines on the 

 pronotum and tubercles on the limbs, the non-spiniform ventro- 

 caudal angles of the lateral lobes and the rounded internal angle of 

 the mesosternal lobes ; while from Parossa it differs in the subrostrate 

 interantennal portion of the frontal costa, the tuberculate caudal 

 margin of the pronotal disk, the scabrous dorsum of the same, the 

 peculiar coriaceous texture and subnodulose surface of the tegmina, 

 in this respect resembling Ommexecha and Spathalium, and in the 

 abbreviate, robust form. 



Form robust, abbreviate; surface of head, pronotum, and femora 

 multituberculate; head, pronotum, venter, and limbs, but particu- 

 larly the latter two, strongly villose. Occiput buUate; interocular 

 region very broad, greatly exceeding the width of the eye, greatly 

 declivent, non-impressed; frontal costa subrostrate between the 

 antennse, evanescent ventrad, sulcate dorsad; eyes subglobose. 

 Pronotum robust, greatest dorsal width subequal to its length; 

 prozona hardly elevated, metazona depressed cephalad, transversely 

 elevated caudad; cephalic margin slightly emarginate mesad, caudal 

 margin very broadly obtuse-angulate with three pairs of marginal 

 nodes; lateral lobes with the ventro-caudal angle very broadly 

 rounded, non-spiniform. Tegmina broad, sublanceolate, apex 

 moderately rounded; texture coriaceous; surface without decided 

 nodes, but with certain of the transverse veins of the discoidal and 

 anal fields slightly elevated. Wings perfectly developed. Interspace 

 between the mesosternal lobes very decidedly transverse, the margins 

 of the lobes rounded; metasternal interspace more transverse than 

 the mesosternal one. 



Type. — P. signata n. sp. 



Pachyossa signata n. sp. 



Type: 9 ; Misiones, Argentina. January 12, 1910. (P. Jor- 

 gensen; No. 22.) [Acad. Nat. Sci. Phila., type No. 5,218.] 



Size medium; form fusiform, subdepressed ; surface of the head 

 with the tubercles fewer and lower on the occiput than elsewhere, 

 pronotum ruguloso-tuberculate, hairs on the head, pronotum, and 

 pleura few and scattered, around the insertion of the limbs and on 

 the same very much more numerous. Head with the greatest width 

 contained less than one and one-half times in the depth of the same; 

 interocular space one and two-thirds times the length of the eye, 

 greatly declivent to the subvertical fastigium, which is delimited 



