168 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.42. 



elongate oblong, densely pubescent. Legs not very slender; femora 

 clavate, each armed with small acute tooth, and strongly constricted 

 beyond the latter ; tibiae in both sexes feebly sinuate internally. First 

 two tarsal joints longer than wide. 



The species differs from sulcifrons by its larger size, coloration, 

 coarser thoracic punctuation, pygidium freely exposed in both 

 sexes, tarsal joints longer than wide, and by the condensed spots of 

 pubescence on the elytra. From sexguttatus it differs also by its 

 large size and coloration, coarser thoracic punctuation, length of 

 second funicular joint, and by the tooth on the posterior femora. 

 It bears a superficial resemblance to virgo and rufipennis, but is 

 separated by many characters. 



Type.— Out. No. 14475, U.S.N.M. 



CHIONANTHOBIUS, new genus. 



This genus belongs to the subfamily Tycliiinae, tribe Plocetini, and 

 is most nearly related to Thysanocnemis, from which it is separated 

 by having the fourth ventral suture distinct and the beak carinate. 



Beak slender, cylindrical, arcuate, separated from front by a deep 

 concavity. Antennal scrobes directed at lower portion of eyes; scape 

 attached beyond middle, elongate; funicle 7-jointed, joints elongate, 

 the first longest, following joints diminisliing in size; club elongate, 

 jointed; eyes very narrowly separated above. Prothorax strongly 

 narrowed in front. Scutellum ogival. Elytra wider than thorax; 

 humeri rounded. Pygidium partly exposed, vertical. Front coxse 

 contiguous, middle coxse narrowly separated; hind coxse widely sepa- 

 rated. Thoracic side pieces large. First ventral suture indistinct, 

 second and third laterally angulate, but not completely covering 

 following segments. Femora with a faint mdication of a tooth ; tibiae 

 unguiculate; third tarsal joint spongy beneath; tarsal claws cleft into 

 two strong teeth, the inner almost as long as the outer. 



Genotype. — Chionanthohius schwarzi, new species. 



CmONANTHOBroS SCHWARZI, new species. 



This beautiful species is described from a single individual selected 

 from a long series collected by E. A. Schwarz on Plummer's Island, 

 Maryland, July 6, 1906. According to ]\Ir. Schwarz the weevils 

 feed on the berries of the fringe tree {Ohionanthus virginica) and 

 the larvse develop in the seeds of the same tree. 



Length, 5.5 mm.; breadth, 2.8 mm. Robust, oval. Color black; 

 head, beak, legs, and antennse rufous; closely covered with scales 

 which completely hide the body. Beak only scatteringly clad with 

 fuie white pubescence; head closely squamose with wliite and golden 

 scales between the eyes, and with a band of golden scales beliind 

 the eyes bordered by a band of white scales; othe^^vise the head is 

 very sparsely clothed with fine golden pubescence. Prothorax 

 evenly and densely clothed with transversely placed, longitudinal, 



