1904.] NATURAL SCIENCES OF PHILADELPHIA. 55 



$ . — Size rather small ; form slender, thoracic width greater than 

 the abdominal wdclth; surface very sparsely and minutely tuberculate. 

 Head subequal in width, slightly larger than the pronotum, surface 

 bearing longitudinal rows of minute tubercles; eyes prominent; an- 

 tennae exceeding half the length of head and body, basal joint slightly 

 depressed, subequal in width. Pronotum subequal in width, twice as 

 long as broad. Mesonotum equal in length to the posterior femora, 

 subequal in width, bearing a faint longitudinal carina which extends to 

 the apex of the abdomen. Metanotum (with median segment) about 

 three-fourths the length of the mesonotum; median segment subquad- 

 rate, equal to one-fifth the length of the metanotum alone. Abdomen 

 with the segments strongly longitudinal, not equalling the thoracic seg- 

 ments in width, seventh dorsal segment tectate, about equal in length 

 to the eighth and ninth together; ninth segment strongly tectate, 

 carinate, the apical margin with a small triangular emargination ; 

 styles projecting beyond the ninth dorsal segment by slightly OA'er 

 half the length of the latter, compressed, apex rounded; subgenital 

 opercule slightly exceeding the apical margin of the eighth dorsal seg- 

 ment in length, apex subacuminate, the preapical portion with a short 

 ungual process. Limbs rather short, the femora and tibiae sub- 

 equal in length. Anterior femora equal to the pronotum and meso- 

 notum in length; metatarsi exceeding the remaining tarsal joints in 

 length. Median femora slightly longer than the metanotum (with 

 median segment); tibiae slightly shorter than the femora; metatarsi 

 not quite equal to the remaining tarsal joints in length. Posterior 

 femora reaching to the middle of the fourth abdominal segment; meta- 

 tarsi about equal to the remaining tarsal joints. 



General color dull olive-brown, the limbs obscurely annulate with 

 very dull ochraceous; tubercles on head and thoracic segments milk}' 

 white. 



MeasiiremerUs. 



Total length 50.5 mm. 54 mm. 



Length of pronotum, 2.2 " 2.5 " 



Length of mesonotum, n.5 " 12.2 " 



Length of metanotum (including median seg- 

 ment), " 9 '' 10 " 



Length of abdomen, 26 " 28.5 " 



Length of anterior femora. ....... 15.5 " 14.5 " 



Length of anterior tibiae, 15 " 14 . " 



Length of median femora 11.2 " 10.5 " 



Leng-th of posterior femora, 13.5 " 12.5 " 



Three female topotypes of this forin a.s:roe perfectly with the type, 



