On Aquatic Carnivorous Coleoptera or Dytiscide. 263 
transversim sat convexus, nitidus, rufo-testaceus, thorace anterius et posterius vage 
infuscato ; elytris nigro-fuscis, vage rufo-signatis, seriebus punctorum abbreviatis ; 
corpore subtus nitido, processubus coxalibus sparsim punctatis ; antennis brevibus, 
articulis haud transversis. Long. 8, lat. 13 m.m. 
The yellow marks of the elytra consist of the outer margin, an abbreviate vitta 
near the suture, an indistinct small mark between it and the shoulder, and another 
indistinct subapical one. The series of punctures are numerous and distinct, 
moderately regular, but becoming obsolete before the base and apex. I have seen 
but a single individual. 
- Northern India, (coll. Bouvouloir). 467. 
II. 1.—Group Norerit. 
The posterior femur destitute of group of ciliz at the extremity of the hind 
margin ; anterior tibia with a curved apical spur ; prosternal process rounded behind 
(or obtusely acuminate, not truncate). This group comprises only three genera, 
Anterior tibia short, broad, and 
subtriangular, with well-marked 
outer apical angle ; the curved - | 
spur short and inconspicuous. 
AsingleSouth American species. 
PRONOTERUS, (vide 
below.) 
The spur moderately large, hind } 
tibie, but little flattened and! ,, P PTT. ; 5) 
dilated. European and Mediter- pO LISISUTS, (Gale Jp, AEB.) 
Anterior tibia, with indefinite ranean species. J 
outer angle, and bearing a very 
distinct curved spur. The spur very conspicuous ; nine) 
tibie markedly flattened and | SYNCHORTUS, (vide p. 
dilated. Madagascar and African f 264.) 
species. 
I. 4.—Genus PRONOTERUS. 
Anterior tibia with acute outer apical angle; the curved spur small. 
The single species is South American. 
13. Pronoterus punctipennis, n. sp.—Oblongo-oyalis, transversim convexus, 
nitidus, testaceus; elytris castaneis, serie abbreviata subregulari punctorum 
majorum, et versus apicem crebrius, sat fortiter, irregulariter punctatis ; corpore 
subtus impunctato, nitido; antennis brevibus. Long. 22, lat. 1$ m.m. 
I have seen only three individuals; they are males and have the basal joint of 
the front tarsi much thicker than those following it. 
Brazil, (Santa Rita, August and September, 1850, Dr. Sahlberg). 471. 
