aquatic Coleoptera from Ceylon. 357 



Sphcsridium quinquemaculatum. 



Sphcsridium quinquemaculatum, Fab., Ent. Syst., 



Suppl., p. 39. 

 S. tricolor, Walker, Ann. Nat. Hist. (3), ii., p. 209. 



S. quinquemaculatum is a very abundant insect in 

 Hindostan and China, and, like some others of the 

 genus, varies greatly in the coloured markings of the 

 upper surface. Walker's type of S. tricolor is, however, 

 only a very slight departure from the definitely five- 

 spotted form described by Fabricius. 



Cercyon lineolatus. 



Trichopoda lineolata, Motsch., Bull. Mosc, 1863, i., 

 p. 444. 



Galle, in December, 1881. Half-a-dozen specimens. 



Cercyon vicinalis. 



Cercyon vicinale, Walker, Ann. & Mag. Nat. Hist., 



1859, p. 258. 

 C. nigriceps, Motsch., Bull. Mosc, 1863, i., p. 445. 

 C. atriceps, Har. & Gemm., Cat. Col., ii., p. 496. 



Motschoulsky's description agrees with specimens that 

 I have compared with Walker's type of C. vicinale in the 

 British Museum. The name C. atriceps, proposed by 

 Gemminger and Harold as a substitute for Motschoulsky's 

 trivial appellation, becomes therefore superfluous, as it 

 will be the simplest course to adopt Walker's specific 

 appellation for the species. 



Galle and Hadley. 



Cercyon uniformis, sp. nov. 



Rotundato-ovalis, sat convexus, ferrugineus, nitidus, antennarum 

 clava fusca ; sat crebre punctatus, elytris striatis, striis postice vix 

 magis profundis. Long. 2^ mm. 



Palpi clear yellow. Head truncate in front, rather closely 

 punctate, shining. Thorax very short. Elytra with well-marked, 

 though fine, strias, extending from the base to the extremity, and 

 rather deeper on the declivous part ; the outer striae are more 

 like rows of punctm'es, but those near the suture are almost im- 

 punctate, The punctuation of the interstices is like that of the 



