336 



Leptops gravis, Blackb. 

 PI. xxx vi., figs. 105 to 110. 

 Except by the intermediate carinae of the rostrum 

 gradually running into the head, instead of abruptly ter- 

 minated, it is difficult to distinguish some females of this 

 species from females of biordinatus. At Cooper Creek the 

 natives' name for the species (according to the late Dr. J. G. 

 Eeuther) is "Warnkati." 



Leptops frontalis, Blackb. 



A specimen from Stapleton (Northern Territory) differs 

 from the normal form of this species in having the humeral 

 tubercle on each elytron reduced almost to the vanishing 

 point. 



Leptops elongatus, Lea. 

 PL xxxix., figs. 143 to 145. 



Mr. Brown took numerous specimens (there are now nine 

 before me) that I hesitate to regard as more than a variety 

 of elongatus; they all differ in having the elytral tubercles 

 more obtuse, on the apical slope they are more prominent 

 than the others, but much less acute than those of the type ; 

 the median channel of the pronotum is much less conspicuous 

 (not due solely to clothing), less parallel-sided, and on five 

 of the specimens an obtuse ridge traverses its middle, so that 

 on each of these it appears as two irregular -foveae. The 

 median and sublateral carinae of the rostrum are narrower 

 than on the type, although the same in direction and bounded 

 by similar grooves ; the sixth joint of the funicle is transverse, 

 and the other joints are slightly shorter than on the type. 

 The clothing is more of a snowy whiteness (on the type the 

 darker colour may be due to age), and on the abdomen, to 

 the naked eye, appears to form three stripes, of which the 

 median one is abbreviated, its place on the apical segment- 

 being taken by a subtriangular shining space; on each of the 

 nine specimens this space is very distinct, although sparsely 

 clothed, on the type it is scarcely traceable owing to 

 being rather densely clothed, on the type also the larger 

 scales are much more numerous on the under-surface generallv. 

 Seven of the specimens are from 14 to 16 mm. in length, the 

 others are much larger, 21 to 23 mm. 



Leptops hercules, Lea. 



PL xxxviii., figs. 141 and 142. 



The male of this species differs from the female (the only 



sex described) in being much narrower, considerably smaller, 



prothorax slightly longer than wide, elytra with more acutely 



