234 :»Ir. D. Slm^ ContrlhidloHS to the 



liather smaller than L. punctireps, and closely allied; 

 the head shorter and rather ditlerently punctured, the 

 structure of the 6th segment of the hind body in the male 

 different. About as large as L. brininipes, but more 

 parallel and rather broader. Antenna? longer than head 

 and thorax, reddish-yellow; 3rd joint longer than 2ud, 

 4 — 10 each a little shorter than the preceding one. Head 

 almost as broad as the thorax, the hind angles densely 

 punctiu'ed ; a small space in the middle impunctatc and 

 shining, the punctures in front of and those surrounding 

 this space coarse and not so close. Thorax about as broad 

 as the elytra, quite as long as broad, quadrate, of a pitchy 

 colour, shining, rather coarsely and closely punctured, with 

 a line along the middle smooth. The elytra are longer 

 than the thorax, rather closely and distinctly pimctiu-ed. 

 The hind body is pitchy, with the extremity reddish, finely 

 and rather closely punctured. The legs are yellow. 



The male has a large deep notch at the extremity of the 

 7th ventral segment ; the 8th segment has a broad and 

 deep longitudinal impression along the middle, at the 

 extremity it is deeply emarginate : the sides of the longitu- 

 dinal impression are not abruptly defined (as they are in 

 X. decisum), nor produced beyond the hind margin, and 

 their extremity forms a rounded right angle. In the 

 female the dorsal lobe of the 8th segment is quite simple, 

 not at all laterally compressed; both the dorsal and ventral 

 plates of the 7 th segment are a little produced and rounded 

 at the extremity. 



Tapajos ; several specimens. 



6. Lathrohium mendax, n. sp. Piccum, nltidulum, 

 antennis pedibusque rufo-testaceis ; capite dense punctato, 

 disco lajvi, fronte parce fortiter punctata ; prothorace 

 crebre punctato, linea media imjiunctata. Long. corp. 

 vix 4 lin. 



Mas : abdomine segmento 7° ventrali apice profunde 

 exciso ; 6" medio indistincte longitudinaliter impress© ; 

 5° medio depresso, basi utrinque impressione transversa 

 profunda. 



This species resembles exactly the L. parallehim ; it is 

 scarcely smaller, and has the antennrc, thorax and elytra 

 slightly shoi'tcr ; but the male characters are remarkable, 

 and very different. In this sex the 7th ventral segment 

 has a notch similar to that of L. parallelum , but it is not 



