Goleopterological Notices, VII. 613 



sides strongly divergent and broadly arcuate from the base, the humeral 

 swelling moderate; disk feebly, longitudinally impressed toward base within 

 the humeri, but without basal foveas or discal stria, the sutural stria deep and 

 entire. Abdomen as wide as the elytra and only slightly shorter, the basal seg- 

 ment broadly arcuate at apex, 2\4, times as wide as long, with the carinse 

 scarcely more than )4 ^^ long, feebly arcuate, parallel and separated by fully 

 3^ the total width. Legs slender, the femora only feebly dilated; hind tibiae 

 broadly arcuate, feebly swollen and pubescent within toward tip. Length 1.35 

 mm.; width 0.65 mm. 



Florida fLake Worth). 



The head in the males of this genus, as well as Pselaptus, is as 

 singularly modified as in Batrisus. In the present species the oc- 

 cipital region is feebly convex, smooth and gradually ascending to 

 a transverse, broadly bilobed truncature at the middle of the 

 length, this being the posterior limit of a very deep excavation 

 extending entirely across the head between the eyes, and, posteri- 

 orly, far under the occipital surface, the bottom swollen in the 

 middle, the tumor bearing two suberect pointed and setose tubercles 

 extending upward to about the level of the posterior margin of 

 the excavation, the two broadly rounded lobes of the latter with 

 inflexed yellow setse disposed along the edge. The antennal 

 tubercles are rather large and are lamellarly prominent within, the 

 tip of the prominence setose, the two separated by a longitudinal 

 depression carrying the bottom of the transverse excavation for- 

 ward to the rapidly sloping front. The clypeal margin is rounded 

 and minutel}^ reflexed. The ventral apex is not greatly modified, 

 the sixth segment being broadly truncate in a straight line having 

 subangulate and slightly prominent lateral limits, this apical line 

 being also very slightly reflexed in plane. 



The generic name Anchylarthron does not seem to be preoccu- 

 pied, and cannot therefore be changed ; it is moreover more ap- 

 propriate than " Yerticinotus." 



Note. — In the male of Pselaptus helfragei Lee, the vertex is broadly con- 

 cave in the middle from the line through the middle of the eyes to the frontal 

 margin, the concavity being about }4 ^^ wide as the head, with rounded and 

 indefinitely limited margins and having at the central point of the bottom a 

 small and transverse, very feebly elevated and somewhat setose swelling. The 

 antennal cavities at the sides of the front are prolonged inward dorsally behind 

 the prominences in a very remarkable manner, separated dorsally by about a 

 seventh of the entire width of the head and surrounded by a minutely but 

 strongly elevated bead-like margin, the concave channel separating them lon- 

 gitudinally being a continuation of the bottom of the large concavity of the 



