214 MR. C. O. WATERHOTJSE ON COLEOPTERA [Apr. 1, 



than broad and densely covered with hair ; the outer lobe produced 

 a little beyond the inner one, the apex with dense matted hair, with 

 four or five stiff bristles on the outer side. Basal joint of the 

 maxillary palpi short ; the second and third stout, about twice as 

 long as broad, narrowed at the base; the apical joint narrower than 

 the preceding, acuminate at the apex. The labrum about twice as 

 long as broad, membranous, the middle of the front margin very 

 deeply incised, fringed with stiff hair, and with some long stiff 

 bristles arising from behind the margin. The anterior angles of the 

 thorax are very much directed downwards and are rather obtuse, 

 and are not visible when viewing the insect from above, in which 

 position the thorax has a nearly circular outline. The under 

 reflexed shining margins parallel as far as the front angles. Inter- 

 mediate coxse slightly separated. Tarsi rather slender. 



Diaphcetes rugosus, n. sp. (Plate XVI. fig. 1.) 



Nearly black ; sparingly clothed with pubescence, which is chiefly 

 brown, but on the shoulders of the elytra, the basal segment of the 

 abdomen, and the margin of the penultimate segment, and on the 

 tibiae is golden. Head, thorax, and elytra densely and very 

 strongly punctured, the punctures on the disk of the thorax having 

 a tendency to run together longitudinally. The punctuation of the 

 abdomen is much less strong and less close. Head a little broader 

 than long, about two thirds the width of the thorax ; the cheek 

 behind each eye is much less than the length of the eye, the posterior 

 angle rounded. Thorax rounded at the sides and behind ; in the 

 middle of the base there is a short smooth spot. Elytra as long as 

 the thorax, but distinctly broader, with an indication of a sutural 

 stria. Legs pubescent, the middle tibise beset with small blackish 

 spines on the outer side. 



Length 6 lines. 



Hab. Larat. 



Passalid^e. 



Leptaulax timoriensis, Perch. 



The specimens in the British-Museum collection are from India, 

 Philippine Is., Java, Amboyna, Celebes, &c. 

 Hab. Larat. 



Dynastid^e. 



Oryctes rhinoceros, Linn. 



Found in all the neighbouring islands. 

 Hab. Maroe. 



Horonottjs deilophtjs, Sharp. 



This species was described from the Philippine Islands. The 

 specimens found by Mr. Forbes are small males, but do not differ 

 materially from the Philippine examples. 



Hab. Maroe and Larat. 



