37 



portion of the elytra. From the shoulder a strong keel runs 

 along the upper edge of the groove to ahout the middle of the 

 length of the elytron, where it passes to the upper surface of 

 the elytron, and there continues as one of the obsoletely tuber- 

 culated ridges with which the surface is furnished. Just below 

 the point where this keel ceases to limit the groove, and about 

 2 mm. nearer to the shoulder, a second keel commences and 

 continues nearly to the apex, so that the groove is suddenly 

 narrowed about the middle of its length. The sculpture of 

 the surface of the elytra is very difficult to describe intelli- 

 gibly. It seems to consist in a series of scarcely traceable 

 striae, the interstices between which are (alternately) decidedly 

 and scarcely convex. These convex interstices are intersected 

 by numerous irregular transverse impressions, which seem to 

 divide them into very uneven tubercles. Towards the basal 

 and extreme apical portions all system disappears from the 

 sculpture, and it consists of small granules interspersed among 

 wavy furrows. The sculpture is all lightly impressed and ob- 

 scure ; about a dozen striae can be faintly discerned on each 

 elytron, though it is hardly possible for the eye to follow smj one 

 of them continuously along its course. The anterior tibiae have 

 three external teeth, and no trace of any more ; the apical 

 tooth, which is bent, equals in length the basal two joints to- 

 gether of the tarsus ; the next is rather near to it and half its 

 length, a greater interval separates the upper tooth (which is 

 about at the middle of the length of the tibia) from the second, 

 and it is scarcely half the length of the second. 



This insect was taken at Angebuckina. 



P. crassus, sp. nov. Mger; capite magno fortiter bisulcato, 



utrinque juxta oculos punctis 2 setiferis notato ; protho- 



race sublunulato, postice lobato, canaliculate, transversim 



fortiter crasse rugato, late reflexo-marginato, margine 



anteriori rugis longitudinalibus subtiliter notato ; elytris 



prothorace angustioribus supra fortiter depressis, vix evi- 



denter striatis, seriatim inaequaliter sat fortiter tubercu- 



latis, margine anteriori medio leviter emarginato utrinque 



oblique truncate, humeris subdentiformibus, regione 



laterali abrupte decliri longitudinaliter bisulcata ; tibiis 



anticis externe 5 dentatis. Long., 83 mm, 



The width of the thorax compared with the length is as 13 



to 7i. In the preceding insect it is as 11 to 7. The sculpture 



of the upper surface of the elytra is as follows : — Next the 



suture are two rows of small and very ill-defined tubercles, 



among which (especially in the apical half) are some minute 



granules ; then follow three rows of large coarse tubercles 



(which in the specimen before me are not quite symmetrical on 



the two elytra) — about ten tubercles in the first row, five in 



