THE COLTDIID^ 01" JAPAN. 73 



Ctlindromicrus, nov. gen. 



Corpus angustum, cylindricum. Antennse breves ll-articulatse, articulo 

 basali baud condito, clava brevi, lata, biarticulata. Tibjse calcaratse ; tarsi 

 articulo basali elongate. 



The head is short and broad, deflexed, provided beneath with, 

 elongate antennal grooves, which, owing to a considerable exten- 

 sion inwards of the eye, are convergent behind. The front coxae 

 are contiguous, subexserted, a small raised process of the pro- 

 sternum existing behind them ; middle coxae separated by a far 

 from narrow process of the mesosternum. Metasternum very 

 elongate ; posterior coxae not widely distant ; first ventral plate 

 much longer than the following. Tibiae but little angulate at the 

 apex, each with a rather long slender spur ; tarsi filiform, basal 

 joint of the posterior nearly as long as the other three togetber. 



This is allied to the genus Metopiestes, Pascoe, about whose 

 position its describer was probably mistaken. The present genus 

 at any rate must be assigned to the vicinity of Colydmm, not to 

 the Bothriderini, where Metopiestes was located, but which in the 

 Munich Catalogue stands near Colydium. It differs from Meto- 

 piestes by the slender form, and undilated femora ; by its tibiae, of 

 which even the front pair are but little angulate externally, with 

 a comparatively feeble spur ; and by the less separated hind 

 legs. In Horn's arrangement of tbe family both Metopiestes and 

 Gylindromicrus would be placed in the group Deretapbrini, on 

 account of the contiguity of the front coxae. 



Cylindeomicetjs gracilis, n. sp. (Plate III. iig. 6.) 



Elongatus, angustulus, cylindricus, castaneus, parum nitidus, fronte 

 dense tomentosa ; elytris costis tenuibus elevatis. Long. 3| millim. 



Head furnished on the anterior part with a dense erect pile, 

 such as is seen in some species of Tomicidae in a similar position. 

 Thorax elongate, a little narrowed behind; lateral margin ex- 

 tremely fine ; surface dull, bearing a peculiar moderately close 

 sculpture of elongate punctures or scratches ; in in front the scu- 

 tellum with tw^o obscure longitudinal elevations connected in a 

 curve behind. Elytra elongate, somewhat obliquely declivous 

 before the somevrhat prolonged apex, each with five parallel fine 

 sharply elevated costae, but without other sculj)ture ; the third 

 of these costae is strongly elevated at the apex, and curves round 



LINN. JOUEK. — ZOOLOaT, TOL. XIX, 6 



