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III. A Revision of the genus Catasarcus. By Feancis 

 P. Pascoe, F.L.S., F.Z.S., &c. 



[Bead 3rd January, 1870.] 



In the fine collection of Coleoptera lately brought by 

 Mr. Du Boulay from Western Australia^ chiefly from the 

 neighbourhood of Champion Bay, no genus received so 

 great an accession of new species as Catasarcus. By 

 this gentleman^s kindness, I have been able to obtain the 

 greater number of them, and, in comparing them with 

 those of the National Collection, and the undescribed 

 species in my own, and with the descriptions of 

 Schonherr, I thought it would be desirable to attempt a 

 revision of the genus so far as my materials would 

 permit. 



The first two species were noticed by Boisduval in 

 1835, who referred them to Cneorhinus. In 1840 

 Schonherr proposed his genus Catasarcus for four species, 

 described by Fahraeus, of which C. bilineatus was the 

 type ; to these he appended, but as unknown to him, 

 Boisduval's two species; and in 1845 Boheman added 

 another. Germar, three years later, described his C. 

 transversalis , and I am not aware that, except in Lacor- 

 daire's " Genera," the genus has been in any way noticed 

 since. 



But it is in the last-mentioned work that we find the 

 true characters of the genus, and as it is one that must 

 be in every Entomologist's hands, I need not repeat 

 them here. It will only be necessary for me to point 

 out the structure of those parts the modifications of 

 which are supposed to difi"erentiate the species. 



The first character which Lacordaire gives " Head de- 

 pressed in front," although true, is much more marked in 

 some species than in others, a decided convexity being ap- 

 parent in a few, while others have it almost perfectly flat. 

 The front is always more or less scored by three vertical 

 grooves, bounded by four lines, or carinse, often very 

 strongly elevated; the outer ones, however, in a few 

 species, are obsolete, or nearly so, and in many the 

 carinas, with their corresponding grooves, are confined 

 to the lower part of the front, where they are continued 

 into the deep transverse sulcus separating the head from 

 the rostrum; whilst in two or three species a slight line 



TRANS. ENT. SOC. 1870. — PART I. (MARCH.) 



