•318 MR. V. G. SINCLAIB, ON THE | DeC. 3, 



eacli side of the indented part. Just above the upper lip there is 

 a roughly triangular depres,sion with four bristles at the edges. 

 The frontal furrow does not come to the level ot" the antenna;. 

 The surface of the head is covered with granules and tubercles. 

 Posteriorly the frontal sulcus comes close to the edge of the 1st 

 tergite. 



1st tergite. Anterior border curved, marginal ridge covered with 

 tubercles, depression behind it. There are twelve distinct tubercles 

 on the ridge, towards the sides the tubercles become confused and 

 indistinct. The tergite is wider than the head. The posterior 

 margin has eight distinct tubercles ; it is slightly indented in the 

 middle. The marginal ridge does not extend fo the sides. The 

 lateral margins are cut so as to make the shape of the tergite 

 I'oughly hexagonal. The whole surface of the tergite is covered 

 with irregular tubercles. 



2nd tergite widely opened, and not coming much below the 

 fii"st. Three irregular rows of tubercles can be -distinguished. 

 The ends of the keels are bluntly rounded. 



3rd tergite projects less downwards than the 2nd, no regular 

 rows of tubercles can be distinguished except at the posterior edge, 

 where there are fourteen tubercles arranged somewhat irregularly. 

 The lateral edge of the keels begins to be straight instead of 

 curved. 



4th tergite. There are nineteen tubercles on the posterior 

 margin. Anterior angle still acute. No trace of shoulder. 



5t?i tergite. Shoulder present ; anterior angle still acute. The 

 anterior angle is not quite a right angle till the 8th. The anterior 

 edge of the keel is very slightly if at all convex ; in the 9th the 

 posterior edge begins to be concave. The hrst beginning of the 

 postei'ior hook is just visible in the 6th somite. The teeth on the 

 posterior margin are first visible on the 10th, those on the anterior 

 not till the 13th. The posterior hook is never very pronounced. 



The anal sternite is indistinctly 5-lobed ; the longitudinal ridges, 

 of which only four are present, are not very pronounced. The 

 sterna are smooth and granulated, without a transverse furrow. 



Platyrhacus subalbus Pocock. 



Prom Tapelung, Pataluug State. 

 Length 84 mm., greatest width 1.1 mm. 



Pla'l'yrhacus xanthopus Pocock. 

 From Bukit Jala, Jala District. 



Genus Strongylosoma Brandt. 



Strongylosoma nodulosum Attems, var. nov. (Plate XXXII. 

 %. 89.) 



Prom Bukit Besar, Jala District, and Kuala Ariug, Ivelantan 

 State. 



Length 33 mm., width 3 mm. 



This species closely resembles the one from Borneo described 



