APPENDIX. I I 



Aepys gracilicornis. 



A. fusco-testaceus, subopacus, depressus, densissime et rugose alu- 

 taceus punctisque remotis leviter impressus necnon pube demissa 

 pallidiore prsesertim in elytris vestitus ; prothorace angusto, sub- 

 cordato ; elytris parallelo-subellipticis, baud striatis, singulis punc- 

 tis duobus leviter signatis necnon ad apicem rotundatis ; antennis 

 pedibusque pallidioribus et (illis praecipue) elongatis gracilibus. 

 Long, corp.'lin. 1. 



Aepys gracilicornis, Woll., Ann. Nat. Hist. v. 218 (1860). 

 Habitat Maderam, in maritimis subsalinis rarissimns. 



Fam. DYTISCID^l. 



Genus HYDROPORUS. 



Clairville, Ent. Helv. ii. 183 (1806). 



Hydroporus compunctus, n. sp. 



//. ovalis, nitidulus, alutaceus, profunde sed baud dense punctatus, 

 parce cinereo-pubescens, nigro-piceus ; capite omnino sed pro- 

 thorace ely trisque ad latera indistincte rufescentioribus ; prothorace 

 parum inaequaH (postice late irregulariter impresso) ; elytris lineis 

 tribus (una sc. juxta suturam vix punctata, et duabus exterioribus 

 e punctis sat magnis eompositis) notatis; antennis pedibusque 

 rufo-ferrugineis. Long. corp. lin. 1^. 



Habitat TenerifFam, a DD. Crotch semel tantum deprehensus. 



A single example of this Hydroporus was taken by the Messrs. 

 Crotch in Teneriffe (I believe in the Barranco at Ycod el Alto), during 

 their late Canarian campaign. It is rather smaller, convexer, and 

 more oval than the H. xanthopus, and very much more coarsely (and 

 a little more sparingly) punctured ; its head and sides (at any rate of 

 the prothorax, which is also more deeply branded transversely be- 

 hind) are more rufescent ; and its elytra are more distinctly impressed 

 with an obscure longitudinal line (or wide, shallow depression) parallel 

 to the suture, and the two usual series of punctures externally. 



Genus EUNECTES. 

 Erichson, Gen. Dytic. 23 (1832). 



Eunectes siibdiaphanus. 



E. suboblongus, subdiaphano-coriaceus, pallide diluto-testaceus, cly- 

 peo antice subintegro ; capite postice nigro et macula frontali magna 

 antice profunde bipartita ornato ; prothorace vitta transversa fracta 

 nebuloso, ad latera oblique recto, angulis posticis obtusiusculis, 



