430 On Aquatic Carnivorous Coleoptera or Dytiscide. 
prothorace basi utrinque nigricante, elytris sutura signaturisque in medio nigris ; 
thorace basi lateribusque rotundatis, angulis posterioribus valde rotundatis ; elytris 
apicem versus denticulatis ; corpore dense subtilissime punctulato, Long. 5, lat. 
25 m.m. 
Mas, tarsis intermediis vix dilatatis, anterioribus sat dilatatis unguiculo posteriore 
valde elongato, elytris apicem versus denticulo minore. 
Jeddah. 256. 
479. Deronectes islamiticus, n. sp.—Ovalis, minus latus, subtilissime pubescens, 
subtus niger, antennis pedibus capite thoraceque rufis, elytris pallide testaceis ; 
prothorace basi nigricante, elytris sutura signaturisque antrorsum extensis nigris ; 
prothorace basi rotundato, angulis posterioribus obtusis 4, vel rotundatis ? ; corpore 
dense subtilissime punctulato. Long. 5, lat. 24 m.m. 
In the male, the front tarsi are moderately dilated, their posterior claw extremely 
elongated ; the thorax is at the base slightly broader than the elytra, its hind angles 
obtuse not rounded ; the extremity of the elytra is entire. In the female the sides 
of the thorax are more rounded and contracted behind so that the hind angles are 
quite rounded ; the elytra are furnished near the apex with a distinct tooth. 
Readily distinguished trom Deronectes arabicus, by its narrower form and the 
greater extension of the black marks of the elytra. 
Kurdistan. 257. 
4S0. Deronectes suavis, n. sp.—Ovalis, subtilissime pubescens, nigricans, capite 
testaceo, ad verticem et ad oculos utrinque infuscato, prothorace testaceo sed latius 
infuscato ; elytris fascia basali signaturisque parvis testaceis, apicem versus denti- 
culatis ; prothoracis angulis posterioribus per-obtusis ; corpore dense subtilissime 
punctato, sed abdomine magis fortiter punctato; antennis pedibusque testaceis, 
illis apicem versus his tarsis infuscatis. Long. 4%, lat. 23 m.m. 
The male is not quite so dull as the female and has the front and middle tarsi 
broader, with the hinder claw of the front ones a good deal elongate. 
Greece, (Mount Parnassus). 258. 
481. Hydroporus variegatus, Aubé, M.C.—(é) Ovalis, subtilissime pubescens, 
nigricans, capite testaceo, utrinque infuscato ; prothorace in medio fusco, lateribus 
clytrisque fascia basali signaturisque parvis testaceis ; elytris apicem versus fortiter 
denticulatis ; prothoracis angulis posterioribus obtusis ; corpore dense subtilissime 
punctato, sed abdomine paulo magis fortiter punctato ; antennis pedibusque tes- 
taceis, extrorsum obscurioribus. Long. 5, lat. 2¢ m.m. 
