BY WILLIAM MACLEAY, J UN., ESQ. 153 



facial grooves ai'e deep and parallel, and are connected together 

 in the middle by a deep transverse line. The thorax is elongate, 

 truncated in front and behind, and slightly rounded near the poste- 

 rior angles. Tt has the medial line distinct, and has a shallow 

 puncture on each side, about equidistant from the medial line 

 and the sides. The elytra are covered all over with a smooth 

 slightly raised net work in large meshes, the interstices being 

 filled with punctures, while close to the apex there is a slight 

 tendency to granulations. The fore tibiee are slightly and 

 distantly bidentated externally. The intermediate tibite have 

 no tooth, but there is a considerable dilatation of the apex of the 

 joint. 



The mandibles are very blunt at the apex, while the palpi 

 agree with the characters given of the genus. 



This species, which was found by Mr. Masters under a log 

 of wood on the Paramatta race-conrse, is, I believe, with the 

 exception of one in the collection of W. S. MacLeay, Esq., labelled 

 " Murrumbidgee," the first of the genus found in New South 

 Wales, and it is remarkable for two or three peculiarities. In 

 the first place, it is the only species known which departs from 

 the very remarkable sculpture of the elytra, peculiar to Gnatlioxys. 

 The structure of the fore tibiae also shows its aberrant character, 

 as there appears to be nothing so characteristic of the genus as 

 the nature of the dentation on its tibiae. These teeth, unlike 

 the formidable ones so conspicuous on the strongly palmated 

 fore tibi« of Carenum, Scmnphites, ScarUes, Ceratoglossa, and 

 Glivina are, in this genus, so far as the apical tooth is concerned, 

 little more than flattened prolongations of the tibite, while the 

 other teeth are small and distant from the first. In the present 

 instance the fore tibiae have little of the palmated character of 

 those of the more typical Scaritidce, and the two teeth which 

 they have are neither strong nor large. In addition to this a 

 further departure from the true Scaritidce is evinced in the loss 

 of the tooth on the intermediate tibiae. Mr. Westwood makes 

 the apical tooth on the intermediate tibige one of the characters 

 of his genus Gnathoxys, but the place of the tooth in the present 

 species seems to be taken by a slight and widened prolongation 

 of the external apex of the limb. I may add, that the aberrance 

 seems to be still further proved in this instance by the fore tarsi 



