298 Gn Aquatic Carnivorous Coleojjtera or Dytisciche. 



thorace anterius in medio et postorius magis obscuro, elytris fuscis signaturis 

 lono-itudi.iialibus testaceis. Long. 41, lat. 2i m.m. 



The marks of the elytra are rather indefinite, they consist of some longitudinal 

 marks forming an ill-defined pale broad band, descending in an oblique manner 

 from the shoulder towards the suture ; the apex is pale but in front of it the 

 colour is darker than elsewhere ; there is also a pale mark near the side about the 

 middle : the upper surface is rather dull, but the elytra show scarcely any traces 

 of punctuation. The only individual I have seen is a female ; the epipleura bears 

 3^ groove on its under edge, which commences broadly and abruptly, and so causes 

 the margin of the elytron when viewed from one side to appear a little dilated at a 

 spot some distance before the extremity. The apical ventral segment is rather 

 long, and without any sinuation of its outline. 



South America ; Santa Rita, August, 1S50, Salilberg. 550. 



121. Laccophilus rotundatus, n. sp. — Ovalis, convexiusculus, minus nitidus, sub- 

 sericeus, testaceus, prothorace in medio, pectore, abdomine elytrisque fuscis, his 

 fascia subbasali signaturisque post medium testaceis. Long. 4, lat. 2i m.m. 



Near the base of the elytra there is a rather narrow, somewhat irregular, pale 

 band, indistinctly interrupted at the suture ; there is also a pale mark at the side 

 near the middle, and several large, coalescent, pale marks, forming a broad, 

 flammulate mark behind the middle, and the apex itself is also pale. In the male, 

 I can see no trace of a coxal file ; the front and middle tarsi are distinctly incrassate. 

 The female differs in the simple tarsi; but very little in the structure of the epipleurse. 

 The species is very similar to L. sufiusus (No. 107), but is much smaller. 



Brazil. G18. 



122. Laccophilus bicolor, (Cast.) Aube, M.C. — Ovalis, sat latus, subdepressus, 

 minus nitidus, rufescens, elytris fascia lata transversa fusca. Long. 4, lat. 2| m.m. 



The elytra in this species are quite -pale at the base and apex, and are broadly 

 darker across the middle ; in the dark band there is an obscure pale spot near the 

 margin ; I find in the individual examined only very indistinct signs of the second 

 subapical band mentioned by Aube in his descri^ition. The only individual I have 

 seen is a female, and has the epipleura nearly simple, and the apical ventral 

 segment rather long, and without any sinuation. 



South America ; (Cayenne, Coll. Bouvouloir). 551. 



123. Laccophilus undatus, Aube, M.C. — Ovalis, sat convexus, minus latus, 

 nitidus, rufo-testaceus, elytris dense subtiliter puuctulatis fusco-testaceoque varie- 

 gatis ; antennarum apice infuscato. Long. 4, lat. 2 m.m. 



