1884.] FROM THE TTMOR-LAUT ISLANDS. 217 



lateral ones deeper, but much less so than in P. sulciyer ; the first 

 three interstices flat, the lateral ones very slightly arched, much less 

 than in P. sulciger. 



Length 16 lines. 



Hab. Maroe. 



CURCULIOJTID^. 



Orthorrhinus l^tus, Saund. & Jekel. 



The type of this species is from the New Hebrides. 

 Hab. Maroe. 



Sphenophorus obscurus, Boisd. 



A widely distributed species. 

 Hab. Larat. 



Prionid^. 

 Archetypus castaneus, n. sp. (Plate XVI. fig. 4.) 



Dark chestnut-brown, the head and mandibles inclined to black ; 

 the legs and abdomen pitchy yellow. Mandibles nearly as long as 

 the head, very robust, convex, strongly punctured ; on the inner 

 side and the epistoma clothed with fulvous hair. Head shining 

 above, dull at the sides, with a longitudinal impressed Hne in the 

 middle ; with some strong punctures above, rugose at the sides. 

 Thorax wider than the head ; at its broadest part (just before the 

 anterior angles) a little more than twice as broad as long, narrowed 

 posteriorly, shining; the disk flat, moderately strongly but not 

 closely punctured, with a smooth spot in the middle; the sides 

 sloping down ; the shining surface of the disk continued down the 

 side in a triangular shape to near the margin ; the rest of the side 

 impressed, dull and densely punctured. Scutellum smooth. Elytra 

 at the base a httle broader than the base of the thorax, gradually 

 widened posteriorly for two thirds their length, and then again 

 narrowed, the apex broad and obtusely rounded ; shining, strongly 

 and moderately closely punctured, except near the scutellum, where 

 the punctuation is very delicate. Each elytron has a fine, slightly 

 oblique, raised line about the middle, commencing within the 

 shoulder and not extending to the apex. Submentum very closely 

 and very coarsely rugose. 



Length 1 6^ lines. 



Hab. Maroe. 



Cerambycid^. 



Pachydissus holosericeus, Fabr. 



Occurs in many of the neighbouring islands. 

 Hab. Maroe. 



DiATOMOCEPHALA PACHYMERA, PaSCOC. 



The specimens of this species in the British Museum are from 

 Celebes and Waigiou. 



Hab. Larat. 

 Proc. Zool. Soc— 1884, No. XV. 15 



