102 Mr. H. W. Bates on the Longicorn Coleoptera 



legs with thighs abruptly clavate. The basal joint of the poste- 

 rior (as well as the other) tarsi is scarcely longer than the second; 

 the thorax is very much narrower than the elytra, and its surface 

 is studded with obtuse tubercles, the lateral tubercles in some 

 of the species being scarcely visible, and in none spiniform : the 

 elytra are also tuberculated or uneven, and are not spined at 

 the apex. Most of the species which I have examined have the 

 basal joint of the antennse much flattened beneath ; and in all, 

 the apex of the same joint is produced beneath into a short 

 tooth. The elytra are generally fasciculated, but have not very 

 distinct centrobasal ridges. 



Leptostylus appears to be closely related to Erphcea of Erichson 

 (Consp. Ins. Peruana, p. 144), differing chiefly in the absence of 

 acute lateral thoracic tubercles. 



1. Leptostylus pleurostictus, n. sp. 



L. oblongo-ovatus, subconvexus, tomento cinereo-brunneo vestitus : 

 thoracis dorso quiuquetuberculato : elytris multifasciculatis, lateri- 

 bus macula magna mgro-fusca ornatis. Long. 4j lin. 



Head clothed with tawny-brown pile. Antennse not much 

 longer than the body, brown ; basal joint (except the tip) and 

 base of the remaining joints grey. Thorax with five distinct 

 dorsal tubercles ; the lateral tubercles short, conical, obtuse, and 

 accompanied, near the front angle on each side, by a smaller one : 

 greyish or hoary, a lateral spot behind the tubercle dark brown. 

 Elytra ovate, not narrowed before three-fourths of their length ; 

 apex very briefly, obtusely, and obliquely truncate : surface coarsely 

 punctured (except near the tip), and furnished with numerous 

 small tubercles arranged in three irregular rows, and surmounted 

 each by a pencil of short bristles pointing towards the apex : the 

 colour is ashy or greyish brown, a large dark brown patch occu- 

 pying each side from the base to the middle, and an indistinct 

 oblique whitish belt traversing the middle of each elytron. Un- 

 derneath and legs brownish, varied with grey. The sterna are 

 all plane. 



Occurred sparingly at Ega on slender dead branches. 



2. Leptostylus cretatellus, n. sp. 



L. oblongus, subconvexus, tomento canescente vestitus : elytris linea 

 laterali nigra, macula magna apicali fusca : thoracis dorso indi- 

 stincte tuberculato. Long. Z\ lin. 



Head clothed with grey pile. Antennse grey, spotted with 

 brown. Thorax uneven above ; tubercles indistinct, the lateral 

 ones conical, obtuse, placed behind the middle ; the colour is 

 hoary white, the fore part of the disk having two small dark 

 brown spots. Elytra oblong, sharply and obliquely truncated at 



