1902.] NATURAL SCIENCES OF PHILADELPHIA, 59 < 



(two of which I have examined) exactly fit it except for oue 

 trifling character, whicli the series examined shows to be a very 

 variable one, namely, the obtuse-angulate or rotundate character 

 of the caudal angle of the lateral lobes of the pronotiim. Colora- 

 tion appears to bear absolutely no weight as a diagnostic char- 

 acter, and is only of interest in that the males are deeper and more 

 richly colored than the females. 



Some measurements of the prouotum, in comparison whh that of 

 the new species, may be of interest : 



Phrynotettix taosanus n. sp. 



Tijpe. — ^; Taos Valley, Taos county, N. M., June, 1883. 

 Collection of the U. S. National ^Museum. 



The most important differential characters are given in the key 

 of the species. The median carina of the metazona is also very 

 apparent, while in tshivavensis it is obsolete ;" the transverse sulci 

 are also more arcuate in taosana, and the central portion of the 

 caudal region of the prozona more tuberculate. 



Body short and broad. Head with the vertex about equally 

 long as broad (decidedly broader than long in females of tshiva- 

 vensis), median carina distinct and extending to the tip of the 

 fastigium; frontal costa compressed above and separated from 

 the fastigium by a distinct rugose cariua, below the ocellus strongly 

 compressed and obsolete, sulcate throughout; eyes rather small, 

 very much shorter than the infraocular gense. Pronotum rather 

 short, broad and cordiform in outline, the surface heavily rugose 

 as characteristic of the genus, cephalic border subai-cuate, the 

 lateral carina strongly constricted cephalad, the caudal margins 

 straight ; median carina distinct but most developed on the meta- 



- In immature specimens this carina is very distinct, but the type of 

 taosana is a fully adult female, and the presence of a distinct median 

 carina cannot be laid to immaturity. 



