1884.] ON COLEOPTERA FROM THE TIMOR-LAUT ISLANDS. 213 



variously arranged ; belly granulate ; a triangular, papillose, dermal 

 flap on the tip of the snout, on the edge of the upper eyelid, above 

 the vent, and on the heel. Colour and markings very variable. 

 Alale with two internal vocal sacs. 



From snout to vent 85 millim. 



Treasury, Shortland, and Faro Islands. 



3. On tlie Coleopterous Insects collected by Mr. H. O. 

 Forbes in the Timor-Laut Islands. By Chas. O. 

 Waterhouse. 



[Eeceived March 27, 1884.] 

 (Plate XVI.) 



The number of species of Coleoptera collected by Mr. Forbes in 

 the Timor-Laut Islands is twenty-nine. Of these the following 

 deserve special notice on account of their geographical distribution : — 



1st. Diaphcetes rugcsus, a new genus and species of Staphyhnidae, 

 which Mr. David Sharp informs me he possesses from Java. 



2nd. Cyphogastra angnlicoUis (from Larat), a species of Bu- 

 prestidse, only previously known from Banda. 



3rd. Cyphogastra splendens (from Maroe), a new species closely 

 allied to the preceding. 



4th. Archetypiis rvgosus, n. sp. This genus of Longicorns, of 

 which there was only one species previously known, occurs in 

 Waigiou, Dorey, and Aru. 



5th. Pelargoderus rvgosus. Another new Longicorn closely allied 

 to P. arouensis. 



6th. Nemop/ias forbesii. A third new Longicorn nearly allied to 

 N. grayi from Amboyna. 



Carabid^. 

 Catascopus amcenus, Chaud. 



Two specimens which may perhaps be merely varieties of this 

 species. They are, however, darker in colour than any in the 

 British-Museum collection, being of an obscure olive-seueous, sha- 

 ding into dark purple at the sides of the elytra. 



Hab. Maroe. 



Staphylinid^. 

 Diaphcetes, n. gen. 



General characters of Stapkylimts, but with the head smaller than 

 is usual in that genus. Labial palpi robust, with three visible joints ; 

 the first and second short, the apical one very large and cup- 

 shaped. The maxillae are very broad, the inner lobe a little longer 



