18 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



Three males, 14 females. Montelovez, Chihuahua, Mexico, September 

 20, E. Palmer. [U.S.N.M. No. 702, female.] 



2. NETROSOMA NIGROPLEURA, new species. 



(Plato II, fig. 3). 

 Pezotettix nigropleura BRUNER!, MS. 



Body luteo-testaceous, heavily marked with black. Head uniform 

 luteo-testaceous, sometimes feebly infuscated, with a broad black baud 

 behind the eyes, and the lateral faces of the frontal costa above the 

 antennae marked with black; antennae blackish fuscous. Prouotum 

 and body behind it with a broad equal mesial baud of luteo-testaceous, 

 separating two very broad black bauds precisely as in N. fusiform is, 

 only the lower third of the lateral lobes, the inesothoracic episterna and 

 the lower half of the metathoracic episterna luteous. Meso- and rneta- 

 nota with scarcely perceptible very sparse punctuation ; posterior mar- 

 gin of the pronotum feebly emarginate, including the whole dorsal 

 breadth ; interspace between mesosternal lobes of male a little broader 

 than the lobes themselves. Tegmiua wholly wanting in the male 

 (female unknown). Hind femora luteo-testaceous with very feeble 

 cloudy signs of bifasciate markings similar to those of N. fusiformis; 

 hind tibiae dull luteous at base passing on apical half into coral red, 

 the spines pallid with black tips. Supraanal plate of male triangular 

 with straight sides, the extremity abruptly truncate and with a small 

 mesial triangular appendix, the basal half with a raised rounded longi- 

 tudinal ridge, having a tolerably deep mesial furrow on its summit; 

 furcula wholly wanting; cerci moderately broad, lamellate, tapering 

 gently and straight on basal third or more, beyond arcuate subfalcate 

 and gently incurved, terminating in an acute but rounded angle below, 



Length of body, male, 13 mm.; antennae, 8.5 mm.; hind femora, 

 8.25 mm. 



Two males. Lerdo, Durango, Mexico (L. Bruner). 



Besides the differences from N. fusiformis mentioned in the table, the 

 present species has relatively longer antennae. 



3. PARADICHROPLUS. 

 (Ttapa, beside; Dicliroplus, a genus of Melanopli.) 



Pezotettix (Div. II) ST!L, Bih. K. Sv. Vet. Akad.-HandL, V. No. 9 (1878), pp. 4, 8. 

 Paradichroplus BRUNNER, Re>. Syst. Orth. (1893), p. 145. 



Body rather elongate, compressed, sparsely pilose. Head not promi- 

 nent, nor broader than the thorax, the vertex gently convex, scarcely 

 or not elevated above the level of the pronotum, the fastigium rounded, 

 descending moderately, the face retreating considerably, especially 

 below; interspace between the eyes not very narrow even in the male, 

 as broad as the broadest part of the frontal costa, which is at the ocellus, 

 the costa narrowing considerably above, slightly sulcate below and 

 failing to reach the clypeus; antennae short and stout, scarcely if at 



