570 



Aneurystypus inermi colli s, n. sp. 



d" . Bright-castaneous. Under-surface and legs with 

 dense, rusty-red hair ; upper-surface glabrous ; pygidium 

 sparsely clothed on upper-sides, elsewhere glabrous. 



Head with irregular punctures between eyes ; clypeus 

 rather elongate, apex and sides strongly elevated, the latter 

 deflected outwards at base to touch the ocular canthi, basal 

 carina well elevated and somewhat sinuous, punctures rather 

 small and fairly numerous. Antennae ten-, club three- 

 jointed, seventh joint very thin, rami much larger than usual 

 in the genus. Prothorax not twice as wide as long, sides 

 strongly rounded, front angles produced, the hind ones rounded 

 off, front neither excavated nor tuberculate ; punctures sparse 

 and minute, but becoming somewhat larger towards base. 

 Elytra slightly wider than prothorax ; sutural and lateral- 

 striae distinct but somewhat irregular, the others very feeble, 

 punctures moderately large but irregular, rather sparse except 

 on apical slope. Pygidium with crowded and irregular 

 punctures about base, sparse and small elsewhere. Hind tibiae 

 moderately long, spurs long and unequal : claws long, thin, and 

 equal. Length, 15 mm. 



Bah.— South Australia: Denial Bay (Dr. C. T. Abbott-). 

 Type (unique), I. 7826. 



The only previously described species (except the two pre- 

 ceding ones) whose male has the prothorax unarmed is Jaevis^ 22 * 

 from the description of which the present species differs 

 in being larger, in having the punctures of the clypeus smaller 

 than in pajiTiUus instead of larger, and in other details of 

 punctures. The club of the antennae is considerably larger 

 than in other species of the genus and approaches that of 

 Corynophyllus, but the mentum is more prominent than on 

 that genus. In Aneurystypus the mentum varies considerably, 

 being very prominent in pauxillus, not quite so prominent in 

 jHchardsae, still less prominent in calvus and aurilegvlus, and 

 slightly less so in dives, on which species it is much as on the 

 present one. The punctures between the eyes are not very 

 dense, close to the eyes they are small, simple, and fairly 

 numerous, but in the middle they are smaller, and often two 

 or three are transversely conjoined to appear like short striae. 

 On close examination much of the surface of the prothorax 

 and elytra is seen to be very finely shagreened. On the type 

 the side of each elytron near the base has a small and peculiar 

 notch, but this may be individual rather than specific. 



(22) Excluding collaris, which has been transferred to Smu<- 

 stomus, of the But elides, on account of its uneven claws. I am 

 very dubious if the transfer was justified, despite the claws. 



