BY W. MACLEAY, JUN., ESQ. 335 



lateribus unidentato dente magno, elytris latis rotundatis 

 seriatim granulatis anguste albido-vittatis basi quadri- 

 tuberculatis. 

 Long. 4 lin., lat. If lin. 

 Hab. Port Lincoln. 

 This species also much resembles a Cubicorhynclms, it has 

 also an affinity to Acantholophus convexiusculus. There are two 

 small tubercles on the forehead, and one of a larger size on each 

 side of the head between the eyes. The head is thickly covered 

 with scales. The thorax has four small tubercles on the anterior 

 edge, three or four on each side of the medial line, and a strong 

 conical lateral one. The elytra are broad, rounded at the sides, 

 and covered with alternate rows of punctures and granules. 

 Four small nodular looking tubercles project forwards from the 

 base, two near the scutellum, the others nearer the shoulders. 



The number of Amycteridge now described is so great, that 

 the following table of the species with their habitats will be 

 found convenient for reference. 



The genera Talaurinus and AcantJiolophus are in this list sub- 

 divided in the way described in my Paper of August last, but the 

 genus Sderorinus is now for the first time divided into sections, 

 which I think will assist materially in simpHfying the identifica- 

 tion of the species, and a few words of explanation may be 

 necessary. 



The elytra of all the species of Sderorinus are more or less 

 punctured in rows, and the interstices are more or less elevated 

 and often tuberculated. There are four of these more or less 

 elevated interstices on the upper surface of each elytron, for the 

 fifth, which is sometimes alluded to in the specific descriptions, 

 is more properly a lateral interstice. The species which have the 

 fourth interstice closely and continuously tuberculated, and which 

 constitute my first sub-division, are very numerous, and are 

 almost exclusively from South Australia. In these the second 

 interstice is always continuously tuberculated, while the first and 



