CUCUJID^; 125 



out the width, having no trace of the usual two dentiform pro- 

 jections. The body is more convex than usual as in the adustus 

 section. The anterior acetabula are more widely open behind than 

 in the biguttatus section, but the tarsi are normal and 5-jointed, 

 except the posterior of the male. My representative of con- 

 vexulus Lee., is a male from Detroit, Michigan, which is the type 

 locality according to the list published in the paper by LeConte on 

 the Coleoptera of Michigan, by Hubbard and Schwarz (Pr. Am. 

 Phil. Soc., 1878, p. 652), where it is said to have been taken at 

 Port Huron, only a few miles from Detroit, though not described 

 until a year later. As shown by the very prominent spherical eyes, 

 head as wide as the pro thorax and the only moderately elongate 

 elytra, this specimen is obviously a male, but the outer three joints 

 of the antennae are slightly dilated, somewhat as in the female of the 

 two species here described though less conspicuously. In the 

 female the hind body is always much longer than in the male. The 

 figure of convexulus given by me in my early work on the Cucujidae 

 (Tr. Am. Ent. Soc., 1884, plate VI, fig. 6) is taken from a female, but 

 from what locality I do not now recall. The species of this con- 

 vexulus section resemble each other rather closely but differ in 

 antennal structure. The two following are hitherto undescribed: 



Laemophloeus filiger n. sp. Male oblong, convex, shining, brownish- 

 black throughout, the legs and antennae also blackish; pubescence short 

 and not close though distinct; head, including the small subbasal, very 

 prominent and spherical eyes, slightly wider than the prothorax, strongly 

 and rather closely punctate, feebly impressed transversely subapically 

 but without trace of epistomal suture, except laterally, and without the 

 ambient line of normal species; labrum large, semicircular; palpi long and 

 slender, the mentum large, transversely oval and coriaceous; mandibles 

 long, evenly and feebly arcuate, bifid at tip and also with a short tooth 

 on the upper edge near the apex; antennae very long and filiform, without 

 trace of apical enlargement, about as long as the entire body, all the joints 

 very long and slender, except the second, which, though slender, is much 

 shorter than either the third or fourth, which are subequal, and the basal 

 joint, which is stouter, cylindric-oval and twice as long as wide; last three 

 joints slightly dilated at their apices; prothorax very transverse, fully 

 twice as wide as long, much wider at apex than at base, the sides becoming 

 arcuately oblique in more than basal half, the apical and basal angles 

 both very prominent, the former acute, the latter right; surface broadly 

 convex, punctured strongly like the head, the sublateral grooves strong 

 and entire; scutellum semicircular, punctate; elytra oblong-oval, at base 

 as wide as the prothorax, at the middle wider, between three and four 

 times as long as the latter, barely one-half longer than wide, the parallel 



