BY EUSTACE W. FERGUSON. 397 



3-4 small spiniform granules extending backwards from the humeral spine, fol- 

 k)\ved by two or three short conical spines with a long acute spine on the edge 

 of the declivity; second row on fiftli intei-stice consisting of 5 spines, the fii-st 

 large, acute, projecting outwards and somewhat foi-wards, the following 3 

 smaller but acute, the apical one very long and acute, situated at a lower level 

 than apical tubercle of first row: seventli interstice with a strong infra-humeral 

 spine. 



Venter flattened; more or less densely covered with In-own depressed cloth- 

 ing, with a narrow median white vitta. Legs simple. Dimensions: c?. 8 x 3.5 

 mm. 



Hah. — Western Australia. Described from a single male, not in too good 

 preservation, in the Macleay Museum collection. 



This species differs widely from any of the other members of the genus and 

 perhaps should be separated generically ; the arrangement of the head and rostral 

 tubercles is however similar. //. aculeatus. though tlie smallest species known, 

 has longer spines than any of the others. It may be recognised by the long 

 spines projecting from the prothorax over the head, and by the long spine on 

 tlie side of the prothorax, in front of the subapical constriction. 



HvBORRinxf'iTrs furcatus Mad. 

 Macleay, Trans. Ent. Soc. N.S. Wales, i., 1865, p. 29G. 



d. NaiTow, elongate. Black; clothing dusky, inconspicuous, median line 

 of elytra with'a mixed white and brown vitta, furcate at declivity and extending 

 on to inner sides of the apical tubercles of first row. 



Head with frontal and supraorbital tubercles small and noduliform, not 

 quite in a straight line across the head, the supraorbital somewhat larger than 

 the frontal. Rosti-um widely excavate above; the lateral margins raised, angu- 

 late, l)ut iiardly tuherculate ; basal tubercles large, erect, conical, moderately 

 closely ajiproximated. Antennae with second joint of funicle longer than first. 



Prothorax slightly produced over the head; submedian tubercles noduliform, 

 not in single series, partially united to form a low, irregular ridge on either side 

 of median area, the posterior pair rather strong and projecting backwards; 

 lateral margins bitubercnlate, the anterior tubercle strong, suljtriangular, the 

 posterior smaller and obtuse. 



Elytra parallel-sided; base with short, forward projections at the ends of 

 the first and third interstices; apex eniarginate, briefly niucronate on each side; 

 sculpture somewhat confused, punctures moderately large, less regular than in 

 27. macuJatiis; with three rows of tubercles; first row with 7, the basal one large 

 and conical, situated at humeral angle, the intermediate ones erect, obtuse 

 nodules, becoming larger posteriorly, the apical tubercle large and acute; second 

 row with 5-6 strong conical tubercles, the first ynd the last two larger than the 

 others, the apical tubercle reaching a lower level tlian that of first row; seventh 

 interstice with a strong, conical, infi'a-huraeral tubercle, followed by a row of 

 3-4 smaller tubercles. [Venter missing]. Legs simple. 



2. With clothing as in d', but median liifurcato vitta even more strongly 

 marked. Elytra broader with apex more widely emarginate; tubercles smaller 

 and more obtuse. Venter rather feebly convex; moderately densely clothed with 

 brown, with scattered whitish decumbent setae. 



Dimensions : c?. 11 x 4 mm. ; ?. 12 x 5 mm. 



TIah. — Western Australia: King George Sound. / 



^ /> 



