DR. F. LEUTHNER ON THE ODOXTOLABIXI. 



451 



touch when the mandibles are closed. One small tooth at the base of the mandibles. 

 Head with the front margin not convex. Labrum frequently projecting downwards 

 between the mandibles, but generally with a triangular epistoma above tliem (fig. 2). 



3. Forma priodonta. — Mandibles about as long as the head, flattened, straight, and 

 slightly incurved at the tip (the right mandible generally rather more strongly developed 

 than the left), with six or seven small unequal tcctli. Labrum resembling an epistoma 

 (fig. 3). 



Female. Deep black, except the outer margin of the elytra. Head nearly twice as 

 broad as long; upper surface convex, strongly punctured; canthus very broad : man- 

 dibles short, with three or four small teeth on the inside; upper and under surface 

 strongly punctured ; mentum flattened, co:irsely punctured ; prothorax with two lateral 

 spines ; upper surface flattened or only slightly convex, dull, finely punctured, the sides 

 more strongly S-shaped in front than in 0. cuvera; both spines pointed; elytra twice 

 as long as broad, black and shining, finely punctured, with a reddish-brown border 

 about 2 millim. in breadth ; on the upper side it is seldom so broad as to occupy nearly 

 half the elytra ; rim of the elytra beneath always reddisli brown ; front tibiae with three 

 longitudinal ridges and rows of punctures; outer side with four or five spines above 

 the terminal fork. 



The males vary in size from 34 to 79 millim., and the females from 34 to 48 millim. 



Number of specimens examined : about seventy-eight males and twenty-eight females, 

 in different collections. 



Habitat. China (Shanghai, Lilong, Hongkong). 



Measurements. 



Total length, 

 millim. 



79 



Telodont 



Mesodont 



Priodont 



,.,.{ 



73 

 66 

 60 

 ,'57 

 49 

 34 

 48 

 34 



Head. 



millim. 



16 by 22 



15 „ 22 



14 „ 21-5 



14 „ 22 



U „ 21 



11 „ 19 



9 „ 15 



9 „ 14 



8 „ 15 



6 „ 10 



Mandibles, 

 millim. 

 26 

 26 

 24 

 18 

 16 

 13-5 

 10 



8 



7 



5 



Prothorax. 



millim. 

 11 by 24 

 11 „ 23-5 

 11 „ 23-5 

 11 „ 23 

 11 „ 22 



10 „ 21 

 9 „ 18 

 9 „ 16 



11 „ 20 

 8 „ 15 



Elytra. 



millim. 

 30 by 24 

 30 „ 24 



28 „ 24 



29 „ 24 



26 „ 22 



27 „ 22 

 24 „ 20 

 22 „ 18 

 26 „ 21 

 20 „ ? 



The alteration of the name of the species, which has hitherto been regarded as 

 0. gazella, Fabr., was unavoidable when I found, on examining Fabricius's type of his 

 Lucamis gazella (compare PI. XCI. fig. 6) in the Banksian collection of the British 

 Museum ', that this female example from Siam was totally distinct from Westwood's 



' This collection was formerly in the possession of the Linnean Soeict) . 



3u2 



