448 Lt.-Col. Winn Sampson on * 



other interstices, forms the edge of the convex apical de- 

 pression, which has a dull and roughened surface; the base 

 of the third interstice is almost smooth, and that of the 

 fourth ends in a few granulations, plainly visible when 

 viewed laterally. 



Female. — Front concave, very shiny and delicately reti- 

 culated, a bisinuous line divides the anterior portion, which 

 is irregularly convex ; from the concave posterior part there 

 is a short median longitudinal line, and a few very long hairs 

 arch over the front from the sides, besides some shorter ones 

 on the vertex ; just above the mouth the surface is slightly 

 roughened and elevated; the prothorax is similar to that of 

 the male, but the anterior patch of punctures is much larger 

 and heart-shaped. The apical depression of the elytra is less 

 than in the male, the horizontal portion being less abruptly 

 separated from the declivous portion, owing to the much 

 shorter terminal spines of the interstices ; the first and 

 second interstices are continued to the apex in the form of 

 granules, the remainder ceasing before the depression and 

 becoming granular from the basal two-thirds. 



This species belongs to Chapuis's group Sulcati, in which 

 the species P. signatus and P. westicoodi also have the pro- 

 thoracic punctures placed anteriorly. 



The sexes have been determined by dissection. 



Platypus rectangulalus, sp n. 



J. Fronte lineato-punctata et carina media ornata ; fusco-testa- 

 ceus, prothorace congeriebus punctorum angustatis ; elytris 

 Bubtiliter lineato-punctatis, interstitiis subtilissime punctatis, 

 depressione postica lunata, angulis productis, emarginatione 

 reetangulata. 



Long. 3 mm. 



$ . Fronte lineato-punctata et striga media impressa, pallide 

 testacea, prothorace congeriebus punctorum duabus semi-ovali- 

 bus ; elytris subtiliter lineato-punctatis, interstitiis vix distincto 

 punctatis, depressione postica lunata, rugoso-punetata, foveola in 

 utroque elytro impressa. 



Long. 3-2 mm. 



Loc. Tharrawaddy, Lower Burma (E. P. Stebbing). 



Male. — Testaceous brown, the elytra becoming darker 

 posteriorly ; prothorax with about fifteen punctures on each 

 side of the anterior extremity of the median sulcus, which 

 does not extend quite to the base and only halfway to the 

 apex ; the rest of the prothoracic surface is furnished with 

 punctures of irregular size and distribution ; at the extreme 

 base and apex there are small areas of fine wavy transverse 



