231 



pygidium. The sculpture of the elytra varies, being almost 

 obsolete in some specimens, but it is never strong ; the 

 punctures in the rows are shallow, a little transverse, and not 

 close. The club of the antennae is nearly twice as long as the 

 entire head, and is nearly parallel sided, and about four 

 times as long as wide. The legs resemble those of 

 Corynophyllus. 



I have received from Mr. East two specimens taken at 

 Mallala and there are several examples in the South Aus- 

 tralian Museum — one of which is ticketed '' CorynopJiyllus 

 calvuSj' but the name does not appear to have been published. 



SEMANOPTEKIJS. 



No Australian genus of Dynastidcs presents greater difficulty 

 than this, for the descriptions of the three species on which the 

 Eev. E. W. Hope founded the genus are too short and vague 

 to be of much use. I have succeeded, however, in identifying 

 one with some certainty, and I subjoin a detailed description 

 of it, adding descriptions of two more which are certainly new. 



S. SubcBqualis,llo^Q. Sat convexus ; nitidus; obscure brunneus ; 

 capite crasse transversim rugato, cornu conico brevi 

 armato; prothorace canaliculato (canalicula crasse punc- 

 tulata), antice transversim rugato, postice subtiliter punc- 

 tulato ; elytris vix costatis sparsim punctulatis. Long. 

 11—13 1. ; lat. Q—Q^ 1. 



The length of the horn varies, but never exceeds that of the 

 basal joint of the antennae. The prothorax is decidedly more 

 than half again as wide as down the middle it is long ; it is 

 nearly twice as wide at the base as across the front margin ; 

 its sides and hind angles are rounded, its front angles sharp ; 

 its impression occupies its front half (in the male) or third 

 part (in the female), this portion of the segment being strongly 

 declivous ; the puncturation of the longitudinal channel is con- 

 fined to the broad hinder part. The elytra are distinctly at 

 their widest behind the middle ; their sutural, external and apical 

 parts are confusedly, finely and sparingly punctured (in some 

 examples this puncturation is almost obliterated) ; the disc is 

 occupied by about six rows of fine, and not close, punctures 

 (in some examples very obscure), the first, third, and fifth 

 interstices between which are quite smooth and scarcely or not 

 at all convex, the second and fourth interstices being quite 

 level, and confusedly and very sparingly punctured. The 

 scutellum is coarsely punctulate about the base (and in some 

 examples in the middle). In both sexes the antennae are short 

 with the club shorter than the preceding joints taken together, 

 and the anterior tibiae are strongly but rather bluntly triden- 



