498 



Group 2. — Very distinct with a little experience; all the 

 known members of it are large. 



Group 3. — Also a very distinct group, but some members 

 of the preceding group have similar palpi. 



Group If. — The species of this group are the most trouble- 

 some to determine, as it is often difficult to decide as to the 

 length of the antepenultimate joint of the maxillary palpus, 

 its base usually being obscured, so that its real length is often 

 a matter of conjecture until dissection, and even after that 

 not always certain ; but the character is supplemented by "the 

 dorsal surface of the body is pruinose and iridescent" : not 

 always, however, very satisfactory. 



Group 5. — After passing the preceding group the present 

 is a very distinct one. 



Groups 6 and 7 . — These are only distinguished, inter se y 

 by a character of doubtful value. 



Group 8. — Distinguished solely by colour. 



Haplonycha marginata, Blackb. 



Two specimens, marked as cotypes of this species and 

 agreeing with the description, and another from Stradbroke 

 Island (Queensland), have the front tarsi with remarkable 

 claws; they are dilated and distorted at the base, with the 

 apical hook not regularly curved, but strongly incurved (or 

 sinuous) so as almost to touch the basal portion, and one claw 

 is more deformed than the other. 



Haplonycha pilosa, Blackb. 

 PI. xxxiv., fig. 22. 



Five specimens from Minnipa Hill probably belong to 

 this species, and I should have had no hesitation in referring 

 them to it, but for the comments: "The sparse, erect, very 

 fine, and inconspicuous hairs on its head, disc of prothorax, 

 and base of elytra are a valuable specific character." On 

 these specimens the middle of the disc of the pronotum is 

 glabrous, but there are many hairs before the basal gutter, 

 and about the middle of the apex (and extending some dis- 

 tance from the apex), but these hairs are quite as long and 

 conspicuous as the fringing ones. The third joint of the 

 antennae was not mentioned in the description, but on the 

 Minnipa Hill specimens is very strongly triangularly dilated 

 on one side. The six-jointed club and triangularly notched 

 apex of pygidium should, however, be conclusive. 



Haplonycha pulchella, Blackb. 

 A specimen from Mindarie appears to belong to this 

 species, but has the elytra of a deep castaneous-red, and 



