88 XEW SPECIES OF AUSTRALIAN COLEOPTERA, 



wide, apex much narrower than base, base obtusely rounded, 

 sides subparallel on basal half; with small scattered punctures 

 rather sparser than on head. Soutellum transverse, apex trun- 

 cate; without or with but few small punctures. Elytra slightly 

 wider than prothorax, a distinct and continuous stria on each 

 side of suture, elsewhere with very feeble traces of striation and 

 with small punctures in feeble series. JJndersurface with small 

 punctures, the sides very fipely aciculate, jugular region and pro- 

 sternum finely transversely corrugated. Length 4J, width \\\ 

 variation in length 4-5 J mm. 



Zr«6.— Mount Wellington (J. J. Walker, H. H. D. Griffith, 

 and Lea), Huon River, Hobart, Tasm.(Lea). 



This species seems to be not uncommon in old rotting logs, 

 where it may sometimes be taken in company with Prostomis 

 Atkmsoni, Waterh. From Prostomis, to which the genus is 

 undoubtedly closely allied, the basal lobes and simple under- 

 surface of head will readily distinguish it. From the New 

 Zealand D. Howitti,* Pasc, it may be distinguished by its much 

 smaller size, much paler colour, sparser and smaller punctures, 

 much less transverse clypeus, and by the 2nd- 6th joints of 

 •antennse not at all transverse. Seen from the sides, the disc of 

 the elytra appears to be margined by a narrow continuous carina, 

 but this is invisible from above. The elytral punctures, although 

 as a rule larger than those on the prothorax, are very shallow 

 and never sharply defined. With the head removed, the body 

 resembles many of the Cossonides, especially of the genus 

 Co^sonus. 



Platisus integricollis, Reitter. 



(Plate iv., fig. 6.) 



The larva of this species is an extraordinary creature, especially 

 as regards its tail segments ; it may sometimes be taken in 

 abundance under bark, often in company with the adults; when 

 full grown it measures about one-half inch in length. The larva 



* Mr. J. J. Walker has kindly given me a specimen of this species. 



