58 



arcbed, and reflexed margins narrow. Their surface is regu- 

 larly convex, shining, and quite devoid of sculpture, except the 

 following on each, viz. : — On the disc a large puncture near the 

 humeral angle, and another not far from the apex ; on the front 

 margin two or three punctures placed close together ; along 

 the lateral margin a row of from 18 to 20 punctures. On the 

 anterior tibiae the exterior ridge has four teeth above the 

 apical large teeth, none of which are visible from a point per- 

 pendicularly above the upper surface of the tibia, and the top- 

 most is in many examples so minute as to require for its detec- 

 tion careful examination with a strong lens ; the inferior ridge 

 bears six or seven fairly sharp and strong teeth, the lowest of 

 which is placed some distance from the apex of the tibia, being 

 a little further off from it than is the front base of the upper 

 of the two large apical teeth. Length, 22-25 mm. ; width, 

 7t-8 mm. 



I have the following forms which at present must be regarded 

 as varieties of C. anthracinum. Although one or two of them 

 may very possibly prove to be distinct closely allied species, I 

 have not yet discovered any satisfactory character on which to 

 separate them : — 



A. Much smaller than the type. Length, 17-20 mm. The 

 front tibiae are reddish; there are never more than six teeth on 

 the inferior ridge of the same, and I have not been able to de- 

 tect any trace of a fourth (topmost) tooth on the exterior ridge. 

 This insect I have never seen except from Port Lincoln. It 

 varies in colour as the type. 



B. Larger than the type ; measures 26i mm. The sides of 

 the elytra appear a little straighter, and these organs are de- 

 cidedly more than twice the length of the thorax. I possess a 

 single specimen taken in South Australia, but I know not 

 exactly where. The violet bordering of its elytra is scarcely 

 discernible. 



Besides the above I have a specimen in which the anterior 

 large puncture is exceptionally close to the shoulder on one 

 elytron, a specimen in which it is altogether wanting on one 

 elytron, and several in which there are faint appearances of a 

 system of wavy longitudinal lines scratched on the elytra. 



I am not able to say whether any of these last-named forms 

 are identical with C. cyanipenne, Mad. Judging by the brief 

 descriptions of that insect and C. anthracimun, I should think 

 it quite possible that the form I have called var. a is what Mr. 

 Macleay described nnder the name cyanipenne, but Mr. Macleay 

 himself tells me it is his antliracinum. To confuse matters 

 still more I have received the name cyanipenne from Europe for 

 one of the large forms described above, cyanipenne being, accord- 

 ing to the original description, " of less size (fii^iiC. anthra- 



