90 PROCEEDINGS OF THE ACADEMY OF [Jan.. 



claw-likc spine; lateral aspect of the head with a distinct longi- 

 tudinal rounded ridge passing through the eye; eyes globose, rather 

 small; antennae equal to the mesonotum and metanotum in length, 

 basal joint triquetrous, sul^concave, rectangular, the external margin 

 with a distinct submedian and apical spine, second joint longitudinal, 

 depressed. Pronotum slightly transverse, anterior margin concave, 

 posterior margin truncate ; median portion with a pair of longitudinal 

 tuberculous ridges; lateral portions with a broad distinct continuous 

 ridge. Mesonotum two and one-half times the length of the pronotum ; 

 median carina sprinkled with tubercles, the anterior and posterior 

 portions each bearing a distinct symmetrically disposed pair; lateral 

 ridge distinct, gently curved upward in the supra-coxal region. Meta- 

 notum (including the median segment) two-thirds the length of 

 the mesonotum and similar in structure, except that the anterior por- 

 tion of the median carina is without tubercles; median segment slightly 

 more than one-fourth of the whole metanotal length. Abdomen 

 almost equal to the head and thorax in length, subequal in width, all 

 segments transverse, the oblique lateral lines present in the other 

 species of the genus subobsolete; median carina very distinct on the 

 fourth and eighth segments, bifurcate on the former, cristate on the 

 latter; ninth dorsal abdominal segment basally rectangular, the pos- 

 terior median portion produced into a subtriangular process, the apex 

 of which is truncato-emarginate; subgenital opcrcule reaching to the 

 apex of the eighth dorsal segment, carinate, produced, the apex 

 rounded. Limbs short and stout. Anterior femora about three-fourths 

 the length of the mesonotum, basal flexure slight, but occupying 

 half the entire length, dorsal carina high; tibiae slightly shorter than 

 the femora; metatarsi not exceeding the succeeding joint in length. 

 Median femora slightl}^ shorter than the metanotum in length, superior 

 margin obscurely trilobate; tibise slightly shorter than the femora; 

 metatarsi not different in character from the succeeding joint and but 

 very slightly longer. Posterior femora equal to the median segment 

 and first and second abdominal segments in length, suiDerior margin 

 trilobate, the third low and subobsolete in character; tibiee slightly 

 shorter than the femora in length; metatarsi as in the median limbs. 



General color ochraceous and wood-brown, the two tints irregularly 

 intermingled, and distinctly contrasted in but few places. 



Measurements. 



Total length, 44 mm. 



Length of pronotum 3 " 



Length of mesonotum 9.1 '' 



