78 OTIORHYNCHID^. 



[Horn. 



ridge passing over the eye so that a slight fold is formed almost concealing 

 the eyes from above. The tibia3 are all rather strongly mucronate. From 

 both the above genera the present may be known by the form of the 

 scrobes. 



C. setiger, n. sp. 



Form oval, color brownish, surface sparsely scaly, elytra with rows of 

 clavate scale -like hairs on the intervals. Rostrum densely punctured and 

 with an indistinct median line. Thorax oval, broader than long, sides 

 moderately arcuate, apex and base truncate, disc moderately convex, 

 densely punctured, a slight post-apical and short transverse impression 

 slightly behind the middle, surface with sparse scale-like hairs. Elytra 

 slightly emarginate at base, oval, sides parallel for a slight extent, humeri 

 broadly rounded, surface striate, striae with coarse punctures, intervals 

 feebly convex and with a row of scale-like, clavate hairs. Body beneath 

 dark brown, with few scales, coarsely but not densely punctured. Legs 

 brown sparsely clothed with clavate hairs. Length (total) .10 inch ; 

 2.5 mm. 



This is the smallest species known in our fauna, with the mandibular 

 scar. It may be readily known by its color, the clavate hairs, and the sur- 

 face almost entirely deprived of scales. 



This insect appears to be rare. Occurs in Massachusetts. 



TBACHYPHLGBUS Germ. 



Trachyphlwus Germ. Ins. Spec. Nov., p. 408. 



Rostrum as long as the head, stout, sub-quadrangular, slightly arcuate 

 and with deep transverse impression at base, feebly emarginate in front and 

 with a triangular elevated line in front of which is a smooth space. Scrobes 

 lateral, deep, moderately arcuate and passing directly backward to the eye. 

 Antenna sub-median, moderate, scape attaining the margin of the thorax, 

 moderately clavate, funicle 7-jointed, first joint longest and robust, second 

 slender, joints 3-7 short, as broad as long, becoming gradually broader out- 

 wardly ; club oval. Eyes small, round, lateral, coarsely granulated and 

 with a distinct orbital groove. Thorax transversely oval. Elytra oval. 

 Scutellum not visible. Metathoracic side pieces moderate, suture distinct 

 in its entire length. Metasternum short. Intercoxal process of abdomen 

 broad, truncate; second abdominal segment not as long as the two following 

 united, separated from the first by a nearly straight suture. Middle and 

 hind tibia3 not mucronate, anterior tibiae mucronate and with four or live 

 tooth-like spines around the apical margin. Claws free. 



This genus differs by very marked characters from those which precede. 



In the latter the side pieces of the metasternum are entirely concealed by 

 the elytra. In this the eyes are surrounded by a distinct orbital groove 

 and are small, scarcely prominent and coarsely granulated. The rather 

 deep transverse impression at the base of the rostrum, together with the 

 convexity of the rostrum below this (owing to its being slightly arcuate) 

 give this insect a very peculiar facies. 



