JJ L 1 Notes on Scolytidce. 65 



sky's specific name, as it has priority, and EichhofPs is inappropriate 

 when the insect is no longer retained as a Xyleborus. 



Plafydactylus.— Eichhoff. Notes from the Leyden Museum, VIII 

 (1886), p. 25. 



Head globose, sunk in thorax. Antennas with five-jointed funicu- 

 lus, and sub-tunicate club. Prothorax scabrous in front, without basal 

 border. Tibise strongly flattened, spatulate, finely serrate externally, 

 and grooved for reception of the tarsi. Three basal joints of hinder tarsi 

 broad and flattened, somewhat trigonate. 



The form of the hinder tarsi will distinguish this genus from any 

 other Tomicidse. 



Platydactylns sex-spinosus. — Motschoulsky. Bull, de la Soc. des 

 Naturalistes de Moscow, 1863, I, p. 515 (Eccoptopterus sex-spinosus) Xyle- 

 borus abnormis EichhofT, Berl. Ent. Zeit., Ih68, p. 282. Ratio Tomici- 

 norum, p. 343. 



Oblong, moderately shining, pitchy-black with gray pubescence. 

 Head large and globose, forehead closely punctured and pubescent above 

 mouth. 



Thorax nearly globose, broader than long, base truncate, posterior 

 angles rounded, sides and apex rounded, the latter strongly ; above very 

 convex with an obscure transverse elevation behind middle of disc, thinly 

 pubescent with transverse rows of asperities in front, behind smooth, dull, 

 appearing finely alutaceous under a high power, with scattered punc- 

 tures. 



Elytra narrower than thorax, one-third longer, narrowed from base 

 to apex, base truncate, shoulders and sides rounded ; above convex at 

 base, thence sloped to apex forming an oblique depressed surface begin- 

 ning before the middle of the elytra; closely and irregularly punctured, 

 the punctures being coarser in the apical depression, which is lighter in 

 colour, and the sides of which are each armed with three strong pointed 

 spines. The upper one is the largest and placed about the middle of the 

 elytra, the lower the smallest are close to the apex. 



Anterior and middle coxse and femora testaceous, tibise and tarsi 

 pitchy ; posterior legs pitchy except last tarsal joint. Joints of the pos- 

 terior tarsi oblong, flattened ; first joint larger than second or third 

 joints. 



Length, 2*5 mm. 

 Habitat : Ceylon, Burma. 



E 



