1904.] NATURAL SCIENCES OF PHILADELPHIA. 43 



the first joint depressed, elongate-ovate in outline, second joint monili- 

 form and about one-third the length of the first. Pronotum about a 

 third again as long as broad ; posterior margin arcuate ; median trans- 

 verse sulcus arcuate, longitudinal sulcus much less distinct. Meso- 

 notum about four and one-half times the length of the pronotum, sub- 

 equal in width (except at the posterior articular portion). Metanotum 

 (with median segment) about twice the length of the head and pro- 

 notum; median segment equal to one-half of the metanotum alone. 

 Abdomen exceeding the head and thoracic segments in length, subequal 

 in width, apical segments wdth a median longitudinal carina, which 

 become more distinct as the apex is approached ; ninth dorsal segment 

 apparently tectate in life,* apex slightly sinuate; supra-anal plate 

 produced, acuminate, tectate, the apex triangularly emarginate; sub- 

 genital plate rugulose, carinate, apex with a distinct finger-like median 

 process. Limbs of moderate length, all compressed, the anterior pair 

 exceeding the others in size. Anterior femora slightly over twice the 

 length of the head and pronotum, compressed trigonal in section, each 

 margin with a foliaceous carinate ridge, lower surface with the median 

 carina prominent proximally, and bearing several dentiform serrations 

 distally; tibise equal to the femora in length, strongly compressed, the 

 dorsal portion bearing a marked foliaceous ridge, inferior surface 

 widely and deeply sulcate; metatarsi equal to the remaining tarsal 

 joints in length, superior portion strongly cristate; remaining tarsal 

 joints small, the apical one equal to the second and third in length. 

 Median femora equal to about two-thirds the length of the meson otum, 

 compressed, dorsal portion strongly carinate ; tibise equal to the femora 

 in length, pentagonal in section, external inferior carina with a basal 

 arcuate expansion; metatarsi equal to the second, third and fourth 

 tarsal joints together, dorsal surface not expanded. Posterior femora 

 two-thirds the length of the meson otum, compressed, dorsal aspect 

 carinate, genicular lobes subacuminate, internal inferior carina api- 

 cally expanded and bearing three distinct teeth; tibise equal to the 

 metanotum and median segment in length, pentagonal in section, dor- 

 sal surface sulcate, basal portion of the inferior median and the apical 

 portion of the dorsal carina roundly expanded ; metatarsi but slightly 

 longer than the terminal tarsal joint, dorsal surface not crested. 



General color .-ed-brown, becoming dull umber on the limbs and 

 ashy-brown on the head. 



* Distorted in the dried specimen. 



