488 On Aquatic Carivorous Coleoptera or Dytiscide. 
elytris crebre fere zequaliter puxctatis, serie discoidali punctorum fere nulla. Long. 
z, lat. 2 m.m. 
: Mas, tarsis anterioribus et intermediis fortiter dilatatis ; tibiis intermediis intus 
curvatis, medio incisura parva, parte basali tenui, apicali lata. 
This species is also very closely allied to Celina aculeata, but is less elongate, 
and the base of the thorax is more thickly punctured in the middle. The mucro 
at the extremity of the body is here quite short, but I am not sure but that is 
partly owing to the retraction of the wdeagus. 
South America, (Santa Rita, September, 1850, Sahlberg). 598. 
653. Celina picea, n. sp.—Suboblonga, elongata, angustula, pernitida, glabra, picea, 
pedibus rufis ; antennis haud elongatis testaceis ; prothorace paululum punctato ; 
elytris parce punctatis, sed punctis ad apicem paulo crebrioribus, serie punctorum 
discoidali distincta ; corpore apice breviter mucronato. Long. 43, lat. 2 m.m. 
Mas, tarsis anterioribus et intermediis bene dilatatis ; tibiuis intermcdiis abrupte 
curvatis, medio incisis. 
The thorax in this species is quite without punctuation in the middle at the base, 
and even the anterior marginal punctures beco:ne obsolete in the middle. The 
bending of the male middle tibia is so extreme, that the basal portion is nearly at 
right angles with the apical portion. 
South America, (Petropolis, March, 1850, Sahlberg). 559. 
654. Celina crassicornis, n. sp.—Suboblonga, sat elongata, angustula, nitida, 
glabra, picea, pedibus rufis; antennis testaceis, brevibus, crassiusculis, articulis 
penultimis latitudine longitudine fere zequali; prothorace paululum punctato; elytris 
parce subtiliter punctatis, sed punctis ad apicem paulo crebrioribus, serie punctorum 
discoidali sat distincta. Long. 4, lat. vix 2 m.m. 
Mas, incognitus. | 
This species is closely allied to Celina picea, and it possibly may be only the 
female thereof, but it is less elongate, and has the antenne shorter and thicker, 
and the punctuation of the elytra is rather finer. 
South America, (Petropolis, March, 1850, F. Sahlberg). 600. 
655. Celina bonvouloiri, n. sp.—Suboblonga, elongata, aneustula, nitida, glabra, 
rufescens, elytris paulo obscurioribus ; prothorace paululum punctato ; elytris parce 
subtiliter punctatis, ad apicem fere impunctatis, stria discoidali distincta. Long. 
4, lat. 1s m.m. 
Mas, tarsis anterioribus et intermedis fortiter dilatatis; tibus intermediis 
curvatis, medio incisura parva, parte basali tenui, apicali lata. 
