1884.] ON COLEOPTERA FROM THE T1MOR-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. 

 Male with two internal vocal sacs. 



From snout to vent 85 millim. 



Treasury, Shortland, and Faro Islands. 



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

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

 Waterhouse. 



[Received 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 rugosus, a new genus and species of Staphjlinidse, 

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



2nd. Cyphogastra angulicoUis (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. Archetypus rugosus, n. sp. This genus of Longicorns, of 

 which there was only one species previously known, occurs in 

 Waigiou, Dorey, and Aru. 



5th. Pelargoderus rugosus. Another new Longicorn closely allied 

 to P. arouensis. 



6th. N emophas forbesii. A third new Longicorn nearly allied to 

 N. grayi from Amboyna. 



Carabid^e. 

 Catascopus AM02NUS, 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-aeneous, sha- 

 ding into dark purple at the sides of the elytra. 



Hab. Maroe. 



Staphylinid,e. 

 Diaphcetes, n. gen. 



General characters of Staphylinus, 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 



