BY E. W. FERGUSON 341 



The female is larger, more robust, and the elytral tubercles are 

 rather smaller and more numerous, especially on the third inter- 

 stice. The number on this interstice is subject to variation in both 

 sexes, in the type £ there are ten on the left and thirteen on the 

 right. 



Macleay regarded this species as the typical example of Talauri- 

 nus, as exemplified in the structure of head and rostrum. In the 

 event of the genus being subdivided, the name Talaurinus will 

 belong to the group of which T. typicus is the type. 



Talaurinus alternans Mac]., loc. cit., p. 231. 



9. Size moderate, elliptical-ovate, convex. Black, granules 

 subnitid; sparsely clothed with muddy-grey scales; setse small, 

 black. 



Head convex, forehead concave between the ends of the external 

 rostral ridges, these latter long, slightly convergent, running almost 

 to vertex; internal rostral ridges long, well defined, convergent, 

 median area narrow. Scrobes open behind, partition obsolete. 

 Prothorax (4 x 5 mm.) evenly rounded on sides, apex with a 

 feeble postorbital sinuosity; finely granulate, granules round, dis- 

 crete, somewhat irregular in size; sides with smaller obsolete 

 granules. Elytra (12 x 7 mm.) moderately produced at apex 

 and feebly mucronate, base emarginate, humeral angles marked 

 but not produced; disc with six rows of granules; sutural minute, 

 in single series larger at base; second with six or seven larger, 

 more elongate ones (and on one side with a few smaller ones on 

 declivity) ; third with much smaller granules, in double series near 

 base, but in single on declivity ; fourth with five or six longer ones ; 

 fifth and sixth each with a single series of smaller ones (seventeen 

 and ten); sides seriate-granulate. Fifth ventral segment with a 

 round depression at apex, the edges feebly raised on either side. 

 Dimensions'. 2.18x7mm. 



Hab. — New South Wales: Clyde River (Macleay Museum type). 



Closely related to T. typicus, this species may be recognised by 

 its finer and more regular sculpture, and by the third row of 

 granules being in double series in basal half. 



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