INSECT FAUNA. 95 



CERAMBYCID^E. 



*Cnemoplites Howei, Thorn. 



Arimaspes Howei. Thomson, Syst. Ceramb., p. 203 (1864) ; Lacordaire, 

 Gen. Col., VIII, p. 114 (1869). 

 A large Macrotomid which I have seen in several collections is probably 

 identical with this species, which was originally described from Lord Howe 

 Island, but as I have not been able to refer to M. Thomson's description I 

 cannot speak with certainty. In colour and fades the island specimens 

 agree with Agrianome gemella, Pasc, but the prothorax is more closely 

 punctured, especially in front, and the median line is more pronounced. 

 The tibia) are smooth externally, with no trace of spines. 



Howea, gen. no v. 



Labial palpi with the apical joint slightly elongate, somewhat narrowed 

 posteriorly, the apex truncate. Mandibles short, robust. Head broadly 

 transverse, hollowed out in front between the antennae. Eyes large, pro- 

 minent, approximating above, strongly emarginate anteriorly. Antennae 

 rather longer than the body, somewhat slender, filiform, the basal joint short 

 and thickened, the second very short, the third very long, the fourth to 

 eleventh of nearly equal lengths. Prothorax transverse ; the anterior margin 

 raised, sloping towards the sides ; the anterior angles produced into long 

 outstanding spines. Scutellum conspicuous, narrowed and rounded posteriorly. 

 Elytra ample, elongate, parallel-sided, rounded behind, not spined at the sutural 

 angle. Prosternal process raised, rounded behind. Legs moderately long, 

 compressed, the femora slightly thickened ; tarsi with the first joint decidedly 

 longer than the others ; claws slightly thickened at the base. 



This genus appears to belong to the division of the Prionidae known as the 

 Trogosominae, and to be allied to Trogosoma and Acideres. Its simple 

 antennae, feebly- separated eyes, and the form of its prothorax, distinguish 

 it from these and the allied genera which are known to me. 



Howea angulata, sp. no v. 



Plate VI, f. 8. 



Elongate, parallel-sided, dark ferruginous, somewhat shining, finely and 

 sparingly pubescent ; head and prothorax densely rugose-punctate ; elytra 

 strongly punctured, each with three obscure costiform elevations. 



Head rather strongly rugose-punctate. Antennae ferruginous, the basal 

 joint rather darker, strongly punctured, the apical joint slightly narrowed at 

 the extremity. Prothorax broadly transverse, slightly narrowed behind, 

 strongly and densely rugose-p>unctate, with an indistinct oblique impression 

 on each side at the base ; anterior margin thickened and reflexed, somewhat 

 sloping on each side, the angles produced into conspicuous, slightly recurved, 

 bluut spines ; posterior margin impressed. Scutellum obscurely rugose- 

 punctate. Elytra at the base considerably broader than the prothorax, nearly 

 parallel-sided, strongly and rather closely punctured on the basal half, less 

 strongly and more closely punctured posteriorly ; the sides finely margined, 

 obtusely rounded at the apex. Underside ferruginous ; the sterna sparingly 

 clothed with long pubesccnee; the prosternum rugose-punctate ; abdominal 

 segments finely punctured, sparingly covered with very fine short pubescence. 

 Legs ferruginous. Length 18 — 20 mm. 



Two specimens, one of which is probably the female, as it is of larger size, 

 and has the head slightly hollowed out behind the eyes. 



