134 



(the other being Long., 3^- 1.) and has mandibles much more 

 developed than the other, considerably longer antennae, a much 

 larger and wider head, and a larger prothorax (of which the 

 sides are quite strongly rounded). Waterhouse makes no refer- 

 ence to any sexual difference in the antenna^, calls the sculpture 

 of the female "more distinct throughout" and says that its pro- 

 thorax is constricted behind the front angles (it is slightly so in 

 the specimen I have above called the male, but not in the other). 

 My specimens do not show any noticeable difference in the 

 sculpture (i.e. puncturation and striation) between the sexes. I 

 do not think Waterhouse reversed the sexes^ as his description of 

 the form of the mandibles is inconsistent with his having done 

 so. It will be noted that the sexual distinctions as I have de- 

 scribed them are very similar to those of many L(Bmophl(jei and 

 other Cucujidce. In this species the left mandible and jugular 

 process are considerably longer than the right The apical ventral 

 segment is somewhat narrowly rounded in both sexes and in the 

 male (as in others of the genus) is thickened and somewhat re- 

 flexed round its apex. The left jugular process bears an external 

 obtuse feebly defined tooth considerably in front of the middle 

 and at the apex is dilated and truncate — the truncate front 

 margin being subdentiform at both ends (especially the external 

 end). 



P. intermedins, Black b. My description of this species needs 

 amending, as at the time I made it I had not before me speci- 

 mens of any Frostomis that I could rely upon as being the sexes 

 of one species and consequently I treated sexual characters as 

 specific. The type is a female and I have since taken a specimen 

 in the Victorian Dividing Range which I have no doubt is its 

 male. It will be convenient to substitute the following for the 

 original description. 



Mas. Elongatus ; angustus ; postice sat fortiter angustatus ; 

 nitidus; glaber; piceus, capite prothorace pedibus maculisque 

 in elytris nonnullis indeterminatis rufescentibus ; mandibulis 

 minus latis, valde elongatis, crebre subtilius punctulatis, ad 

 latera modice angulatis, sinistro quam dexter longiori ; pro- 

 cessubus jugularibus inter se disparibus, sinistro longe ultra 

 medium dente externo armato hinc ad apicem acuminato 

 (apice ipso sat acuto, oblique intus et deorsum curvato), 

 dextro multo breviori leviter sinuato ad apicem acuminato ; 

 capite quam corpus ceterum latiori, sparsim subtiliter punc- 

 tulato, postice transversim sulcato (sulco fortiter punctulato); 

 antennis sat elongatis, prothoracis basin fere attingentibus, 

 articulis 3" quam latiori paullo longiori 9^ — 11° clavam male 

 definitam formantibus (9° 10'' que vix transversis) ; pro- 

 thorace sat quadrato sed leviter trans verso, sparsim subtiliter 



