426 On Aquatic Carnivorous Coleoptera or Li/fiscidce. 



arum basi testaceo, elytris signaturis pallidis ; his apicem versus denticulo 

 obsolete ; prothoracis angulis posterioribus obtusis nullo modo rotundatis ; corpore 

 dense subtilissime punctulato, thoracis basi punctis sparsis magis conspicuis. 

 Lonw. 5, lat. 2| m.m. 



In the male the front and middle tarsi are a good deal broader than in the 

 female, and the claws of the front tarsi are very slightly more developed. 



Southern Europe, (South of Fiance ; Italy). 245. 



4G7. Hydroporus fenestratus, Aube, M.(J.— Oblongo-ovalis, subtilissime brevis- 

 simeque pubescens, sub-opacus, subtus niger, supra testaceus, prothorace marginibus 

 maculisque basalibus elytrisque signaturis nigris ; elytris apicem versus denticulo 

 vel acuto (6), vel obsolete (p), corpore dense subtilissime punctulato, prothorace 

 punctis paucis majoribus prsesertim versus basin conspicuis. Long. 5, lat. 2i m.m. 



In the male the front and middle tarsi are broad, the claws of the front ones 

 slio'htly more developed than in the female. The female is rather broader in the 

 after body than the male, so that the thorax is narrower in proportion, and this 

 part has also the hind angles more distinctly marked ; and the upper surface is 

 more dull. 



Southern Europe, (Sicily). 24-1. 



4G8. Deronectes scutellaris, n. sp. — Ovalis, omnium brevissime subtilissimeque 

 pubescens, subnitidus, subtus niger, supra testaceus, elytris lineis maculisque 

 iuterjectis nigris, prothorace medio late bi-infuscato, pedibus plus minusve infuscatis; 

 thorace basin versus latiore ; elytris apicem versus denticulatis ; corpore dense 

 subtilissime punctulato. Long. 4|, lat. 2h m.m. 



In the male the front and middle tarsi are rather broader than in the female ; 

 and the claws of the front ones are more developed, and are unequal, the anterior 

 one being sinuate beneath and shorter than the posterior one. In the female the 

 denticle near the apex of each elytron is very prominent, and the thorax is not quite 

 so broad as it is in the male. The apex of the scutellum is left exposed in this 

 species. 



Cyprus. 252. 



469. Hydroporus clarki, Woll., M.C. — Oblongo-ovalis, subtilissime brevissimeque 

 pubescens, subopacus, subtus niger, .supra pallide testaceus, prothorace basi 

 utrinque fusco-plagiato ; elytris signaturis nigricantibus interruptis et confluentibus, 

 apicem versus denticulo acuto ; corpore dense subtilissime punctulato, prothorace 

 punctis majoribus paucis parum conspicuis. Long. 5, lat. 2? m.m. 



