426 On Aquatic Carnivorous Coleoptera or Dytiscide. 
arum basi testaceo, elytris signaturis pallidis; his apicem versus denticulo 
obsoleto ; prothoracis angulis posterioribus obtusis nullo modo rotundatis ; corpore 
dense subtilissime punctulato, thoracis basi punctis sparsis magis conspicuis. 
Long. 5, lat. 23 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 France; Italy). 245. 
467. Hydroporus fenestratus, Aubé, M.C.—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 (4), vel obsoleto (9), corpore dense subtilissime punctulato, prothorace 
punctis paucis majoribus preesertim versus basin conspicuis. Long. 5, lat. 23 m.m. 
In the male the front and middle tarsi are broad, the claws of the front ones 
slightly 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). 244. 
468. Deronectes scutellaris, n. sp.—Ovalis, omnium brevissime subtilissimeque 
pubescens, subnitidus, subtus niger, supra testaceus, elytris lineis maculisque 
interjectis 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. 22 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 
atrinque 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. 24 m.m. 
