BY THOMAS G. SLOANE. 473 



Prosternum widely and lightly channelled between coxse ; a row 

 of four or five setigerous punctures extending along each side of 

 prosternum, near the coxae, from base to a little in front of coxse. 

 Legs strong ; anterior tibiae tridentate, the upper tooth not 

 prominent ; three light external projections above large teeth ; 

 inferior ridge serrate, extending along middle of lower side of tibiae 

 to apex ; apical plate with a strong acute tooth projecting from 

 apex below the tarsus. 



Length 26, breadth 9-5. mm. 



Hah. — Murchison River District, West Australia. 

 In the collection of C. French, Esq. 



This species has a strong general resemblance to G. habitans, 

 SI., from which, however, it can be readily distinguished ; the 

 frontal sulci not diverging strongly backwards, the prothorax 

 more rounded on the sides, and more narrowed towards the front, 

 with a more strongly marked basal lobe (which is lightly sinuate 

 in the middle, not evenly rounded as in C. hahitans), and the more 

 convex elytra, with the sides less rounded behind the humeral 

 angles^ are among the features which help to distinguish them. 

 A row of four or five setigerous punctures extends along each side 

 of the prosternum, near the coxee, from the base to a little in 

 front of the coxae ; in G. hahitans one or two setigerous punctures 

 are found on each side of the prosternum, near the base. 



Carenum interruptum. 



C. interruptum, Macl., Trans. Ent. Soc. N.S.W., 1865, i. p. 

 181 ; G. castlenaui, Chaud., Ann. Soc. Ent. Belg., 1869, p. 141 ; 

 G. ocGuUum, Macl., Trans. Ent. Soc. N.S.W., 1871, ii. p. 97. 



I have previously published the synonymy of G. castelnaui, 

 Chaud., with G. occultum, Macl.,"^ and now have sufl&cient evidence 

 to justify me in placing both as synonyms of G. interritptum^ 

 Macl. Specimens are in my collection from Goulburn and 

 Merriwa (Upper Hunter), in N.S.W. ; and from Wallangarra, in 

 Queensland. 



* P.L.S. N.S.W., 1891, vi. (2) p. 431. 



