PROSOPOCOELUS PASTEURI. 31 



NOTE VUL 

 A NEW LUCANOID BEETLE FROM JAVA 



DESCRIBED BÏ 



C. RITSEMA Cz. 



In a consignment of beetles, lately received from Mr. 

 J. D. Pasteur and brought together by himself in Western 

 Java (Mt, Poentjak, on the frontier between the districts 

 of Buitenzorg and Preanger), I found among a fine series 

 of Cladognathus giraffa Oliv. a specimen which was at 

 once distinguished from the others by its more slender 

 mandibles which were regularly curved downwards, and by 

 the rounded, not obliquely truncate anterior angles of the 

 prothorax. A more careful examination of this specimen 

 showed me clearly that it had nothing to do with CI. 

 giraffa but that it was a very close ally of the interesting 

 Prosopocoelus decipiens Parry *) from Malabar. The Javanese 

 species is certainly undescribed and I propose to call it 

 after its discoverer: 



Prosopocoelus Fasten ri. 



Length of my unique male specimen (without mandibles) 

 44 mm., that of the mandibles 23,5 mm. — Dull black, 

 the mandibles and the elytra very faintly shining , the lat- 

 ter along the suture with a broad , dark red streak , which 

 is however only visible under certain lights ^). 



The mandibles are long and slender, slightly waved, 

 strongly curved inwards at the tip, and regularly curved 

 downwards; they are rounded, but flattened and broadest 

 a little before the base in consequence of a toothlike dila- 

 tation on their inner margin; beyond the middle a slender 

 tooth is present, and the sharply pointed tip is preceded 

 by an irregular flattened tooth ; between this latter and 

 the post-median tooth the inner margin is indistinctly 



1) Nederl. Tijdschr. v. Entom. VIII (1865), p. 148; pi. 10, fig. 1, \a. 



2) A. similarly colored spot is present on the sides of the pronotum, and 

 another transverse one on the apical ventral segment. 



Notes from the Leyden IMuseuna , Vol. X.IV. 



