1(J4 AEÜUS LEEUWENI. 



the strongest aud obliquely directed upwards and inwards; 

 in front of this tooth a faint arc-shaped notch may be 

 observed. The clypeus is strongly tricuspidate (whence I 

 have derived the specific name), the anterior margin of the 

 head slightly convex , the ocular canthus rounded , with 

 an angular incision just behind the eyes. On the middle 

 of the vertex the head is armed with a strong spine or 

 horn which is directed forwards , and in front of which 

 the head is rather deeply excavated. — The prothorax 

 anteriorly a little wider than the head , the anterior angles 

 broadly but not obliquely truncate, the outer angle of the 

 truncation thickened aud rather acute , the posterior angles 

 subrounded; the lateral margins strongly concave, which 

 makes the thorax contracted in the middle. The disk 

 is provided with a faint longitudinal central groove and 

 with two shallow transverse impressions on each side of 

 the central one; the front margin bisinuate, the hind mar- 

 gin quadrisinuate. — The elytra have the suture raised 

 and each has four longitudinal elevated costae which are as 

 well as the suture thickly clothed with erect scales , but gra- 

 dually evanesce towards the lateral margin and the apex. 

 — The legs are slender and squamose , the anterior tibiae 

 armed on the outer margin with six teeth besides two at 

 the extremity ; the four posterior tibiae are unarmed in 

 the middle on the outside. — The body beneath is closely 

 but shallowly punctured and sparingly covered with scale- 

 like hairs. 



Agreeing with Gnaphaloryx miles v. Voll. in having a 

 spine or horn on the middle of the vertex of the head , 

 and with Gnaphalortjx sculpt i pen nis Parry {ape?' Gestro) in 

 having strongly raised costae on the elytra. The new spe- 

 cies is however easily distinguished by its larger size , by 

 the tricuspidate clypeus , by the contracted prothorax , etc. 



2. A e g u s L eeuic en i , n. sp. cf . 



Length (with mandibles) 27 mm. — Black and subshi- 

 uing. The mandibles opaque by a delicate sculpture which 



Notes from tlie Leyden ÜMuseum , Vol. IV. 



