1919.J 119 



greatly enlarged, forming a sharply-defined club ; eyes lateral, entire-, oval, 

 more prominent behind than in front. Thorax transverse ; sides rather 

 rounded in front, more or less sinuate towards posterior angles, finely mar- 

 gined throughout, except the lateral portions of tlie base ; anterior angles 

 obtuse, depressed, posterior angles sharply I'ectangular or acute; base truncate 

 or feebly bisinuate, almost as wide as base of elytra. Elytra ovate, widest a 

 little behind the middle, finely and irregularly punctured, or punctures obsolete. 

 Wings ample. Pygidium exposed beyond the apex of the elytra. Tarsi simple, 

 penultimate joint smaller than antepenultimate, claw-joint of posterior tarsi 

 about as long as the basal joint. 



Tyj^e, RJiinosimus loallacei Pasc. 



The members of this geni;s bear a superficial resemblance to the 

 Oucujid genera Hhinomcilus and Bhinophloeus of Tropical America. 



Platysaljjingus differs from Rhinos imus in the form of the pro- 

 thorax and in the structure and position of the antennae. It is closelj 

 allied to Platylissodema (supra), differing mainly in the longer snout 

 and the more regularly marginate sides of the prothorax. In Platy- 

 lissodema the rostrum is flat, not much constricted in the middle, and 

 not much produced in front of the insertion of the antennae, i. e. the 

 apex of the basal joint of the antennae reaches up to the apex of 

 the clypeus ; in Plafi/saljjiiif/iis it is slightly curved downwards and 

 prolonged very much beyond the apex of the first antennal joint. 



The genus is known, so far, only from the New Guinea region. 



Jusy to the Species. 



1. Elytra unicolorous, violet, or piceous with violet reflections, distinctly 



and irregularly punctate ; lateral margins of thorax evenly defined 



throughout xvallucei Pasc. 



? —coeruleus Pic, 

 Elytra piceous, each with a large flavous spot near the base and another 

 towards the apex ; sides of thorax unevenly impressed 2. 



2. Basal spots of elytra approximate approximatus, u. sp. 



Basal spots of elytra distant, subhumeral 3. 



S. Rostrum longer, about five times as long as wide . , . .longirostris, n. sp. 

 Rostrum shorter, about twice as long as wide albonotatus Pic 



N.B. — Rhinosimus corticalis Olliff, from Queensland, is not known 

 to me, but it appears to be allied to P. longirostris in the above key. 



Rlatysalpingus longirostris, n. sp. 



Ovate, nitid, almost glabrous ; dark piceous, the thorax with a faint 

 aeneous tinge, the elytra each with two pale testaceous spots, one transversely 

 oval situated behind the shoulders, the other obliquely oval towards the apex. 

 Rostrum very long, five or six times as long as its width at the points of in- 

 sertion of the antennae, expanded near the apex. Thorax widest before the 



