238 ^Ir. D. Sliai^ Conirihutions to the 



elytra, longer than broad, nearly straight at the sides and 

 slightly narrowed behind, closely and rather coarsely 

 punctured, with a very straight line along the middle 

 smooth ; it is of a red colour and a little shining. Elytra 

 a good deal longer than thorax, reddish with a slight 

 piu-plish obscuration, a little shining, rather finely and 

 not densely punctured. Hind body elongate and narrow, 

 yellow, very finely ])unctured, dull except towards the 

 apex, where it is a little shining. Legs yellow. 



The male has a moderately large notch at the extremity 

 of the ventral plate of the 7 th segment of the hind body. 



Manaos ; two individuals, $ and 2 , captvired at light 

 by Dr. Trail in August, 1874. 



Ohs. — This species much resembles L. amazoniciun in 

 form and colour, but it is larger and has the sculpture of 

 the upper surface denser and finer. 



12. Latlirohium tenuicorne, n. sp. Elongatum, an- 

 gustum, parallelum, piceo-rufum, antennis pedibusque 

 testaccis ; capite piceo, dense subtiliter rugoso-punctato, 

 fronte parce fortiter punctata, disco anguste impunctato ; 

 prothorace crebre sat fortiter punctato, linea media im- 

 punctata. Long. corp. 2^ lin. 



Mas : abdomine scgmento 7" ventrali profunde exclso ; 

 segmento 6° late profundeque impresso. 



Allied to L. amazonicum, but with the antennae longer 

 and more slender and the head and elytra differently 

 punctured. The antennre are yellow, very slender and 

 elongate, considerably longer than head and thorax ; 3rd 

 joint much longer than 2nd. Head rather long, its sides 

 parallel, quite as broad as the thorax, the sides and back 

 densely and finely rugosely punctured, the front more 

 sparingly and coarsely punctured, a narrow part in the 

 middle impunctate. Thorax reddisli, much longer than 

 broad, moderately closely and rather coarsely punctured, 

 a line down the middle impunctate. The elytra are about 

 as long as the thorax, finely and not closely punctured. 

 The hind body is dusky red, with the 5th and 6th segments 

 obsciu'cly darker. The legs are yellow. 



The male has a rather deep notch at the extremity of 

 the underside of the 7th segment of the hind body ; the 

 6th segment has a broad and deep impression ; this is very 

 deep and avcII defined at the front part, and the bottom of 

 it is smooth and membranous. 



Tapajos ; one $ specimen. 



