CUCUJID.E 135 



diminishing in length correspondingly; it is always as long as the 

 next three joints combined and is therefore materially longer than in 

 adumbrates; the head in the latter is smaller and, on the elytral 

 flanks, there is a shallow groove just below the carina, besides the 

 very coarse sulcus near the margin ; in both species there is a distinct 

 medial cephalic stria in basal half of the length. 



Leptophloeus n. gen. 



The body in this genus is very slender, parallel and subcylindric- 

 ally convex, reminding us somewhat of Narthecius and, as in that 

 genus, the sides of the buccal opening are slightly produced forward. 

 The head is somewhat elongate but with broadly truncate front as in 

 Cryptolestes, with which it agrees also in the complete closure of the 

 anterior acetabula and in the slender tarsi, in the posterior of which 

 (o 71 ) the last joint is about twice as long as the three basal joints 

 combined. The eyes are moderate, prominent and at nearly their 

 own length from the base, the antennae short, with a short loose 

 3-jointed club, the ninth and tenth joints strongly transverse in 

 both sexes. The prothorax is cylindrically convex, slightly narrowed 

 at base, longer than wide and with straight sides, the sublateral line 

 rather fine. The scutellum is very short and transverse. The ely- 

 tra are relatively rather short as in Narthecius and only a little 

 longer than the head and prothorax conjointly; each elytron has 

 the three fine discal carinulate lines of Cryptolestes, but the sublateral 

 carina of that genus is wholly wanting, the flanks gradually sloping 

 from the convex dorsum. Just below the crest of the flanks there is a 

 coarse deep groove, and the epipleura are defined above by a fine 

 groove; the elytra cover the entire abdomen. The coxae are only 

 moderately remote and the last ventral segment slopes upward. 

 The type of this genus* is the Lcemoplilceus angustulus of LeConte; 

 the European perrisi Grouv., also belongs to it and perhaps others. 

 My representatives of Leptophkeus angustulus were taken by 

 Schwarz at Detroit, Michigan, but the species was described as 

 inhabiting the District of Columbia. I am unable to say whether 

 the two are absolutely conspecific, though this is highly probable. 



* The name Leptophlceus is probably not well composed, but may be regarded as sig- 

 nifying a slender thing found in or near bark. It is probably as rationally founded as 

 Lamophlceus, in which the laimos cannot be regarded as an adjective modifying phloios. 



