209 



two-tMrds as wide as the antennal club is long ; at this point 

 a deep external emargination cuts the tibia half through, 

 which thus reduced in width continues gradually contracting 

 with a curve outwards till this lower contracted piece is a little 

 more than half as long as the part above +he external emar- 

 gination, and is narrowly rounded off at the apex. The anterior 

 tarsus is inserted at the part where the tibia is at its widest; 

 a strong spine (as long as the basal joint of the tarsus) springs 

 from the tibia just above the insertion of the tarsus ; this latter 

 is considerably longer than its tibia; the apex of its basal 

 joint is about level with the extreme apex of the tibia. The 

 intermediate and especially the hind tibiae are much com- 

 pressed and dilated towards the apex, the greatest diameter of 

 the latter at the apex being scarcely less than half the length, 

 of the whole limb. These tibiae have only one well-defined 

 transverse carina each ; the intermediate tarsi are about half 

 again and the hind tarsi twice as long as their tibiae. On the 

 upper surface the hinder part of the head bears a number of 

 long erect hairs ; a fringe of similar hairs runs along the 

 lateral margins of the prothorax ; a dense mass of long woolly 

 hairs protrudes from the base of the prothorax over the base 

 of the elytra ; the propygidium is thickly and the pygidiuni 

 thinly clothed with long pubescence. On the under side the 

 whole surface in front of the hind body is buried in very dense 

 long and woolly pubescence which extends itself, though with 

 less density, along the sides of the hind body. The femora and 

 tibiae are fringed with long hairs not very closely placed. The 

 abdominal stigmata seem to be of the usual Melolontliid type 

 and arrangement. 



For the benefit of anyone who may not possess a copy of 

 G-ermar's memoir I will complete the above remarks by saying 

 that the insect which forms their subject is from 9 to 10 1. long 

 and about 6 1. wide. It is of a clear chestnut brown colour, 

 with the head darker, the external part of the anterior tibiae 

 and the apices of the other tibiae black, and the pilosity pale 

 fawn coloured. The hinder part of the head is closely and 

 strongly and the clypeus and prothorax scarcely less strongly 

 but much less closely punctured. 



The three specimens known to me of this species were taken 

 at various places around Adelaide. 



As far as I can ascertain no insect has been described that 

 can be considered congeneric with this. 



MACLEAYIA. 



This genus (described by me on page 29 of the present vol.) 

 is evidently near to Microthopus, Burm., with which it is just 

 possibly identical, if Dr. Burmeister might bave been in error 



