On Aquatic Carnivorous Coleoptera or Dytiscide. 487 
I, 42.—Genus CHLINA. 
Scutellum large, exposed ; front and middle tarsi five-jointed, the three basal joints 
broader than the two apical, the third emarginate or sublobed, the fourth smaller 
than the others, the fifth elongate; swimming legs slender and feeble ; body ter- 
minating in a spine. 
This genus is represented by seven species,* all very rare in collections; and 
very similar to one another ; the appearance and size is that of narrow, suboblong 
Hydropori. They are peculiar to the warm parts of the New World, one species 
extending to the United States of North America. 
650. Celina aculeata, Aube, M.C.—Suboblonga, elongata, nitida, glabra, rufo- 
eastanea, elytris paulo obscurioribus ; antennis testaceis, elongatis, articulo singulo 
latitudine distincte longiore ; prothorace versus margines evidenter, disco subtilissime, 
punctato; elytris crebre et distincte fere equaliter punctatis, serie punctorum 
majoruim fere nullo ; corpore apice longius mucronato. Long. 5, lat. 24 m.m. 
Mas, tarsis anterioribus et intermediis fortiter dilatatis ; tibiis intermediis intus 
curyatis, medio incisura parva, parte basali tenui, apicali lata. 
South America, (Brazil). 596. 
651. Celina mucronata, n. sp.—Suboblonea, sat elongata, nitida, glabra, 
castanea, capite thorace pedibusque rufis ; antennis testaceis, mediocriter elongatis ; 
prothorace margine anteriore serie punctorum, anteque basin atrinque punctato ; 
elytris basi parece, apice crebre punctatis, serie punctorum discoidali distincta. 
Long. 44, lat. 2§ m.m. 
Mas, tarsis anterioribus e+ intermediis fortiter dilatatis; tibiis intermediis latis, 
simplicibus. 
This species is not quite so elongate in form as the preceding one, and 1s readily 
distinguished by the different punctuation of the elytra, and the simple intermediate 
tibiee of the male. I have seen but one specimen. 
South America, (Constantia, June, 1850, Sahiberg). 597. 
652. Celina longicornis, n. sp.—Suboblonga, sat elongata, nitida, glabra, rufo- 
eastanea; antennis testaceis, elongatis; prothorace versus margines punctato ; 
*And also by the following three, unknown to me: Celina grossula Lec. (No. 1209); North 
America.—Hydroporomorpha parallela Bab. (No. 1336) near No. 652; Brazil—Hydroporus latipes 
Brullé (No. 1393) ; Corrientes. 
