NO. 198S. 8TUDIEl^ OF NORTH A.yEJilCAX WEEVILi:i— PIERCE. 405 



d*. Mandibles robust, with persistent or deciduous apical piece; in the 

 latter case the supports are more salient than usual and depressed. 



PsALLimiNi, new tribe. 

 rf2. Mandibles with deciduous piece, the supports short, conical and trun- 

 cate, 

 c*. Antennae scaly or coarsely pubescent, body beneath densely scaly. 

 p. Claws connate. 



g\ Scrobes curved downward and directed toward the constriction 



between the head and beak Sciaphilini, new tribe. 



f/2. Scrobes directed toward or just beneath the eyes. 



* Thylacitini, new tribe. 



p. Claws free Epic^rini Pierce (1909). 



e^. Antennae shining, sparsely hairy, body beneath iiearly naked. 



Barynotini Bedel (1885). 

 c^. Anterior tibiae dilated at tip; scape long, passing the eyes. 



Trigonoscutini, new tribe. 

 fe2. Third joint of tarsi not wider than second, and feebly emarginate. 



Calyptillini, new tribe. 

 a^. Head and pro thorax verj'^ elongate, cylindrical. 



Rhadinosomini, new tribe. 



The tribes Prypnini, Psallidiini, and Khadinosomini are not repre- 

 sented in our fauna. 



ALCEIDINI. new tribe. 



The oiAy North American genus which can properly be assigned 

 here is the following one, which has since its original publication 

 been unnoticed in our North American literature. It has not yet 

 been recognized by the writer. 



Genus PACTORRHINUS Ancey (1881)^ 



Pactorrhinus C. F. Ancey, Le Naturaliste, vol. 1, 1881, Annee 3, p. 485. 



The following description is translated from the French original: 



Beak very thick, inclined, very short, almost square, slightly attenuate at apex 

 lightly convex and tricanaliculate above, emarginate at tip, not separated from the 

 head. Scrobes deep, arcuate, infraocular. Antennae short, submedian; scape not 

 attaining the middle of the eyes; funicle seven-jointed, first joint short and subconical, 

 second much more elongate and conical, the following joints about the same dimen- 

 sions as the first and subequal; club elongate, normal. Prothorax without ocular 

 lobes or vibrissse, subtransverse, narrowed in front, rounded on the sides, apically 

 truncate, lightly bisinuate at base, posterior angles acute. Scutellum very small, 

 sunken, triangular. Elytra convex, oval, subnavicular, with humeri salient, obtuse; 

 lai^er than the prothorax; striate, with the striae slightly diverging at apex. Abdo- 

 men and legs normal; femora clavate; corbels of posterior tibiae open; anterior tibiae 

 arcuate at their extremity. Tarsi quite laige, spongy beneath; fourth joint larger, 

 claws small, free. Body black, elongate, squamose. 



PACTORRHINUS GRISESCENS C. F. Ancey. 



The following description is translated from the Latin original: 



Length 14.5 mm.; breadth 5.5 mm. 



Elongate, black, strongly convex, grayish squamulose, scales occasionally faintly 

 tinged with red. Head and beak thick, punctulate; beak trisulcate, with the median 

 sulcus deeper and longer. Prothorax convex, somewhat flattened on the middle of 



