106 Transaction)?. 



4 tubercles, the hindmost being on top of the declivity ; alongside the suture 

 there is generally a series of much smaller nodosities. 



Underside nigrescent, clothed with dej)ressed elongate flavescent setae. 



The superficial sculpture of the hind-body is provokingly irregular, not 

 only in different specimens, but on the elytra of the same individual, so that 

 a precise description cannot be given. The lateral spines are sometimes 

 equidistant and hooklike, but the number is constant. Notwithstanding 

 these discrepancies there can be no difficulty in identifying the insect. 



Length (rostrum exclusive), 21-22 mm. ; breadth, 10 mm. 



Pitt Island. 



Found by Mr. Hall. 



Group Cryptorhynchidae. 

 Kentraulax Broun. Ann. Mag. Nat. Hist., ser. 8, vol. 1, p. 156. 

 83. Kentraulax ffavisetosus sjd. nov. 



Robust, nitid, nigrescent, antennae and tarsi rufo-piceous ; scantily 

 clad with very fine yellow setae, but towards the extremity of the elytra 

 the setae are more numerous, squamiform, and conspicuous. 



Rostrum a third shorter than thorax, quite half the width of the head, 

 moderately closely punctate, with a groove along the middle. Head 

 rounded towards the front, broadly impressed between the eyes. Thorax 

 a third broader than long, its sides curvedly narrowed towards the abruptly 

 contracted apical portion, subtruncate or slightly emaginate in front, the 

 base bisinuate ; rather coarsely and closely punctured, with a nearly smooth 

 linear space along the middle terminating in an elongate basal depression. 

 Scutellum smooth. Elytra double the length of the thorax, slightly wider 

 than it is at the base, apices subtruncate ; they are deeply punctate- 

 striate, interstices broad, closely and finely granulate and rugose. 



Underside shining, black, with slender yellow setae. Metasternum and 

 abdomen coarsely punctured, the former angularly depressed behind, basal 

 ventral segment with a shallow rotimdate impression behind the middle, 

 the second medially subcarinate. 



Male. — Rostrum with a well-marked dilatation just below the point of 

 antennal insertion, so that the frontal portion appears expanded when 

 looked at from above. Scape short and very thick, not reaching the eye. 

 Fmiiculus stout, 7-articulate, 2nd joint as long as the short 1st, joints 3-7 

 short, compact, expanded successively, so that the 7th is fully as broad as 

 the triarticulate club. Prosternal canal with a conspicuous spiniform pro- 

 cess at each side in front. 



Female. — Rostral canal angulate. Club more ovate. Rostrum less 

 dilated in front. 



Scape medially inserted. Eyes subtruncate in front. Scutellum tri- 

 angular. Posterior tibiae, as well as the intermediate, with a median denti- 

 form angulation, and another at the extremity. 



The typical species of Psepholax can be at once distinguished by the 

 moderately elongate scape being inserted near the apex. 



K. mnrina, 861, is differentiated by its thoracic carina and the more 

 abmidant and scalelike vestiture above and below. 



Length (rostrum exclusive), 10-11 jnm. ; breadth, 5-5i mm. 



Pitt Island. 



Several in Mr. HalFs collection. 



