BY E. W. FERGUSON. 99 



appears to be a common species in the Riverina district of New 

 South Wales. Lea would refer this species, as well as T. peni- 

 cillatus Macl., T. fonicntosus Boisd., T. exasperafus Er., and 

 the species I have here renamed T. teneb?'irosus, to Psali- 

 dura, on account of the transversely excavate apical segment 

 of the abdomen, and the presence of anal appendages. On 

 dissecting specimens of T. Rive?-infe and T. tenehricosus, how- 

 ever, the appendages were seen to consist of two short, pointed 

 blades, which are conjoined at the base, the connection being 

 membranous ; in T. RiveriiKc a vertical median plate is pre- 

 sent ; this is replaced in T. tenehricosus by a chitinous thick- 

 ening. The forceps thus formed are similar to those in such 

 typical species as T. rugifer and T. hitcephahts, although 

 these species have no vertical plate ; this latter, however, 

 where present, is placed in front of the forceps, and seems to 

 act as a support for muscular attachment. In T. M-elevatus 

 Lea, the forceps, though shaped much as in T- Riverince, are 

 wholly chitinous, and the median vertical plate also is present. 

 I would propose, therefore, that the name Psalicfuni should be 

 restricted to such species as have the forceps more or less pro- 

 jecting externally, with the blades not conjoined at the base 

 but merely connected by muscvilar and ligamentous attach- 

 ments. It must be admitted that, morphologically, these 

 insects resemble Psaldirua more than they do the typical 

 Talaurinus of the tuberculate section; at the same time, the 

 connection between the members of the Granulati is too close, 

 and the differences too evenly graded, to admit of violent 

 separation of a few species ; probably it might be better to 

 separate generically the whole Section Granulati from the 

 Sections Tuberculati and Costati. 



Talaurinus exasperatus Er. 



Erichson, Wiegm. Arch, i., 1842, p. 191. 



There is before me the female of a species of Talaurinus 

 from Tasmania, which probably belongs to this species. In 

 general build and appearance, it seems close to T. TJowitti, 



