178 



so minute as to be only noticeable when carefully looked for — of 

 which I cannot find any trace in the other. This species resem- 

 bles H. muUimaculatus in outline but its elytra are much more 

 finely punctured — more finely indeed than in any other of the 

 Heteroceri before mo. For the determination of the Australian 

 species of this genus I have found the number of serines on the 

 external margin of the front tibiae a valuable and invariable 

 character. All of them known to me belong to the section of the 

 genus having the base of the pronotum more or less margined, 

 and I do not find in any of those of which I can positively iden- 

 tify the male any peculiarity likely to be sexual in the arched 

 ridge of the basal ventral segment. On the other hand all the 

 specimens that seem to be decidedly males have good sexual 

 characters on the head The following tabular statement of tha 

 most conspicuous distinctions among the species known to me is 

 ot altogether satisfactory inasmuch as I have had to rely upon 

 the coloring to distinguish Victori(Sy Blackb., from two allied 

 species. There are other differences, however, which do not lend 

 hemselves to tabulation and I do not doubt that the male of 

 Victorice — unknown to me — has well-defined frontal characters. 

 The descriptions oi H. Master si, Macl., and Australasia, Waterh., 

 do not supply the information thiit would enable me to place 

 them in this tabulation. I may add that the striation of the 

 elytra seems to be in this genus quite unreliable for the determi- 

 nation of species. I have specimens with evident striation taken 

 in company with — and showing no other difference from — speci- 

 mens whose elytra are non-striate. 

 A. Front tibise with 9 to 10 external spines 

 B. Elytra finely and closely punctulate. 



C. Form narrow and elongate ; elytra con- 

 .-. '"^^spiouously narrowed behind the shoulders multimaciilatus Blackb. 



CC. Form normal T] 



D. The light coloring of the elytra not 



reaching base except on lateral 



margin 



E. Clypeus of male with two very short 



slender spines in front between 



which the outline is not emarginate Flindersi, Blackb, 

 EE. Clypeus of male wich two blunt 

 teeth in front between which the 

 outline is emarginate ... .,, indistinztiis, 'OXdi^ckh. 



DD. A subsutural vitta of light colour 



reaches the base of the elytra ... FicfonVe, Blackb. 

 BB. Elytra much more strongly punctulate 



than in the other species ... ... largsensis, Blackb. 



AA. Front tibise with less than nine external 



spines .^ ... . . ... debilipes, Blackb. 



H largpeiisis, sp. nov. Robustus ; modice elongatus ; sat nitidus; 

 setis erectis sat elongatis vestitus ; niger, antennarum basi 

 mandibulis prothoracis lateribus elytris (notulis nonnullis 



