135 



punctulato, obsolete canaliculato (canali et antice et postice 

 sat late abbreviato), lateribus minus arcuatis, angulis 

 obtusis nullo modo prominentibus ; elytris punctulato- 

 striatis (sculptura apicem nee basin versus obsoleta;, striis 

 4° 5° que et interstitio 5° pone humerum sat fortiter depres- 

 sis. Long., 5# 1.; lat. (trans caput), 1 1. 

 Fern, minore (Long., 4 1.) ; colore (exempli typici) toto luteo; 

 mandibulis processubus jugularibus antennisque brevioribus ; 

 capite paullo minus lato, magis convexo. 

 In my original description the term " subtilissime punctulala" 

 applied to the head and pronotum is not a happy one in view of 

 the fact that the same in Atkinsoni are still more finely punc- 

 tulate. The left mandible of the male is nearly twice as long as 

 the interval between the clypeal suture and the posterior trans- 

 verse sulcus of the head — that of the female nearly once and a 

 half the same interval. Compared with the species I have identi- 

 fied with P, Atkinso7ii (see above) this species is^ considerably less 

 finely and less sparsely punctulate on the mandibles head 

 pronotum and metasternum ; its mandibles are considerably 

 longer and narrower in both sexes, its antennae are a trifle 

 shorter and stouter in both sexes (the third joint, especially, 

 being shorter), the left jugular process is of a very different 

 shape, the punctulate striae are evidently better defined close to 

 the base, and the post-humeral depression is much stronger (in 

 Atkinsoni almost obsolete); this consists of a slightly elongate 

 gentle concavity extending in width from the fourth to the sixth 

 interstice, and therefore including two strise and the interval 

 between them. I attach very little importance to the diff'erence 

 in colour. 

 Victoria. 



P. Gornutiis, Waterh. My example of this species is a female 

 (Long., 2|^1.). Its antennae are a trifle (and its mandibles much) 

 shorter than those of intermedius. The left mandible is a little 

 longer than the right, but the two jugular processes are alike in 

 size and shape. These latter are devoid of a defined external 

 tooth and are of sinuate-acuminate shape from the middle to the 

 apex, where they are sharply pointed. The third joint of the 

 antennae is not longer than wide. The well-defined round fovea 

 on the clypeus (referred to by Waterhouse) is probably a reliable 

 character. The longitudinal channel of the pronotum is consider- 

 ably more defined than in any other Prostomis known to me. 

 The position of the jugular processes rendering them visible from 

 above is a very remarkable character. The prothorax is not 

 transverse. 



P. gladiator, sp. nov. Fem. Elongatus ; angustus ; postice 

 minus angustatus; nitidus; glaber; rufo-ferrugineus,antennis 



