CHARLES SCHAEFFER. 259 



can species, and will be easily recognized. With the Mexican spe- 

 cies, having the claws similarly formed, I was unable to identify this 

 species with certainty. The claws in latidens are similarly formed 

 as the anterior or posterior claws in heterodoxa, but are shorter, 

 slightly more arcuate, and the basal part not quite as prominent as 

 in that species, near which it should be placed. 



AXOPLOCEPHALUS n. gen. 

 Mentum slightly longer than broad at base, parallel behind to a 

 little before middle, thence strongly narrowing to apex, which latter 

 is obtuse ; surface very coarsely punctured, with a deep large exca- 

 vation in about basal half and with long, coarse hairs. Maxillte 

 short, slightly convex, unarmed, apex strongly oblique, apical mar- 

 gin beneath clothed with stiff hairs, which are visible from above. 

 Maxillary palpi four jointed, first joint small, slightly arcuate, sec- 

 ond joint longer than third, the latter slightly arcuate at basal 

 fourth, last joint impressed, fusiform, longer than second. Labial 

 palpi three jointed, first joint short, second not quite twice as long 

 as tlie first, last joint impressed, longer than the two preceding joints 

 together. Antennal club elongate oval, as long as the preceding 

 joints in the male, shorter in the female. Mandibles small, simple, 

 not visible from above, the external edge only visible beneath. 

 Clypeus unarmed in both sexes, as long as the head, gradually but 

 not strongly narrowing to apex, apical margin strongly reflexed and 

 at middle deeply emarginate, clypeal suture absent. Prothorax 

 wider than long, apex narrower than base, sides arcuate, liind anoies 

 rounded ; sides, apex and base margined, the basal margin entire, 

 not interrupted. Elytra elongate, nearly parallel, slightly wider 

 behind ; striae deeply impressed and punctate. Prosternum with a 

 post-coxal, prominent, obtuse tooth, partly hidden by the dense, 

 long hairs. Front, middle and hind coxae strongly transverse. 

 Front tibiae tridentate and of nearly equal size in the two sexes. 

 Tarsi long ; the hind tarsi much shorter in the female than in the 

 male, first joint in the male elongate, nearly twice as long as the 

 second, slightly longer than the second and more dilated at apex in 

 the female ; claws equal, simple and alike in the two sexes. Abdo- 

 minal spiracles situated in the dorsal portion of the ventral seo-- 

 nients, except the first, which is situated in the membrane connect- 

 ing the dorsal and ventral surfaces of the abdomen. Pvgidium 

 convex, transverse. No stridulating organs. 



TBANS. AM. KNT. SOC. XXXII. AUGUST, 1906. 



