434 Prof. Westwood's Descriptions 



each has about six slender elevated costas. The legs are slender ; 

 the anterior tibiae finely serrated, and armed with two teeth at the 

 tip (the outer tooth forming the apex itself). The posterior 

 tibiae have a few minute spines on the outer margin, the apical 

 outer angle being elongated and truncate. 



Ceratognathusi ment'iferus, Westw. (PI. XV. fig. 5.) 



C. brevis, subcylindricus, niger, parum nitidus et luteo-squa- 

 mosus, dense punctatus ; elytris tricostaiis ; capite tuberculo 

 medio conico, mento deflexo cordiformi, oculis sinuatis. ^ . 



Long. corp. lin. 5| ; mandib. lin. 1 ; lat. elytr. lin. 2^. 



Habitat Goulborn River (Nov. Holland.) 



In Mus. D. Parry. 



Short, robust, subcylindrical ; black, slightly glossy, thickly 

 punctured, slightly clothed with small luteous scales. Head 

 transverse, the anterior angles produced, elevated and truncated, 

 the space between their angles (or front margin) somewhat emar- 

 ginate ; the clypeus vertical, subtriangular, rounded at the tip, 

 which meets the emargination of the nientum and shuts the mouth. 

 The middle of the disc of the head is armed with a single, conical, 

 obtuse tubercle ; the eyes are sinuated in the middle, both in front 

 and behind. 



The antennae have the basal joint long and slender, the six fol- 

 lowing very short, and the three terminaj ones produced on the 

 inside into long, slender, setose branches, almost equal in length 

 to the entire antennae. 



The mandibles are porrected, rather longer than the head, 

 rather slender, with a strong obtuse tooth near the middle of the 

 inner margin, and a smaller one between it and the apical tooth, 

 which is bifid. 



The maxillae are very small, with a very minute apical lobe, 

 somewhat triangular, obtuse at the tip, and covered with long 

 hairs ; the inner lobe simple ; the maxillary palpi are moderately 

 long and slender. The mentum forms a large deflexed lobe, 

 somewhat heart-shaped, strongly punctured, setose, deeply im- 

 pressed down the middle and notched at its base. 



The prothorax is transversely quadrate, with the anterior angles 

 rounded and the hind ones slightly emarginate ; its upper surface 

 is marked with several polished impunctate patches, and a clear, 

 slender line along the middle, and four round impressions in a 

 row nearly across the transverse centre. The elytra are short, 

 rounded at the tip, punctate, each having three longitudinal. 



