and Species of Coleoptera. 19 



head depressed ; eyes black, finely granulate ; palpi filiform ; 

 antennaj five- or six-jointed?, the basal joint stout, the second 

 very short, third with a short branch at the apex, a longer 

 branch on the fourth, followed by five of still greater length, 

 and all sprinkled with numerous hairs j prothorax transverse, 

 narrow in front, rapidly broader to the base, its posterior 

 angles acute, the disk slightly concave on each side ; scu- 

 tellum narrowly elongate ; elytra rounded at the shoulder and 

 apex, the disk flat, with three slender raised lines ; legs pale, 

 tibiee dilated towards and obliquely truncate at the apex. 



Diurus spTiacelatus. 



D. modice elongatus, parallelus, fuscus, squamis obscure griseis valde 

 dispersis, sed ad apicem elytrorum magis approximatis ; antennis 

 novem-articulatis, articulis basalibus crassiusculis. Long. 13-1-i 

 lin. ( 6 ), 5-10 ( $ ). 



Hob. Andaman. 



Moderately elongate, with the sides parallel, dark brown, with 

 here and there a few oval dull greyish scales sunk in the 

 punctures, more crowded at the apex, the tailed portion with 

 long slender scales ; head and rostrum, as far as the insertion 

 of the antenna, with tuberculiform close-set scales ; antennae 

 nine-jointed, stoutish, especially the basal joints, clothed with 

 long accumbent scales, the first four joints dark brown, the fifth 

 and three following whitish, the latter very short, the fifth as 

 long as the fourth and much curved, the last or ninth black, 

 cylindrical ; prothorax slightly grooved ; elytra seriate-punc- 

 tate, interstices raised ; body beneath brown, greyish scales on 

 the abdomen and a stripe of the same kind along the side; 

 legs brown, dotted with elliptic and elongate grey scales. 



M. Ritsema has described two species (Notes Leyden Mus. 

 iv. p. 214) with nine-jointed antennae, one, D. antennatusj 

 from Java, also with the fifth joint curved, " strongly resem- 

 bling D. furcillatus^'' differentiated, besides the antennee, by 

 the " elongate tails of the elytra." In D. sphacelatus the tails 

 are scarcely half the length of the elytra, while they are as 

 long or longer in D.furcillatus. When there is a departure 

 from a normal character some amount of variability may be 

 expected to occur even in the same species. 



I may mention here that what I considered was the female of 

 my Diurus dispar^ Lacordaire was of opinion was an undeve- 

 loped male. Gemminger and von Harold, however, give it a 

 place in their ' Catalogus ' as a distinct species. I am now 

 inclined to regard it as a dimorphic male of D. fiircillatuSy 

 such as we find in many Anthribidee ; its normal male com- 



2* 



