aquatic ColcojHera fi-om Ceylon. 341 



Canthydrus Icetahilis. 



Hydroj)orus Icetahilis, Walk., Ann. & Mag. Nat. Hist. 

 (3), ii., p. 205 ; Sharp, Dyt., No. 62, p. 277. 



Colombo, in April. About twenty specimens, varying 

 greatly. Only three or four belong to the typical form 

 in which there are two spots at the base of each wing- 

 case ; the others have the two basal yellow spots con- 

 fluent so as to form a band, and in most of them the 

 black colour is replaced by a fuscous colour. 



LaccopJdlus parvidus. 

 Laccophilus parvulus, Aube, Spec. Gen. Hydroc, p. 429. 

 Colombo. One specimen. 



Laccophilus inefficiens. 



Hydroporus inefficiens, Walk., Ann, & Mag. Nat. Hist., 

 1859, p. 51. 



Ovalis, parum convexus, nitidus, testaceus ; prothorace margini- 

 bus anterioribus (hoc obsolete) et posterioribus in medio fusco- 

 maculatis ; elytris fusco-vermiculosis, pone basin fascia flammulata 

 arguta pallide testacea. Long. 3^, lat. vix 2 mm. 



On the front of the thorax there are two obsolete fuscescent 

 marks, nearly or quite confluent, and at the base of the thorax 

 two larger marks. The dark marks on the elytra are coarse and 

 cover the larger part of the surface ; they do not appear as midu- 

 latory or zigzag parallel lines, but leave isolated irregular pallid 

 irrorations between them ; the fascia behind the base is very 

 definite though irregular, and the dark colour in front of it is 

 interrupted by about six radiating pallid dashes ; behind the middle 

 there is a trace of a pallid fascia, the outer dark marks being 

 absent there and the pallid marks between this and the suture 

 larger. 



This species has not been intelligibly described pre- 

 viously. So far as is known, it is peculiar to Ceylon, 

 where it appears to be no rarity. It may be placed 

 next L. clarki. 



Laccophilus anticatus, sp. nov. 

 Ovalis, subdepressus, nitidus, rufo-testaceus, subtus infuscatus ; 

 elytris nigris, fascia arguta subbasali, signaturis post medium et ad 

 apicem, margineque externo testaceis. Long. 3|, lat. 1^ mm. 



