33 
much narrowed behind, steeply inclined in front. Elytra very 
slightly truncated at the apex. Legs and tarsi constructed as in 
Acanthoderes : the male sex, however, is as yet unknown. The 
antennae are simple, the basal joint pyriform-clavate, shorter than 
the third ; the second and third joints slightly furrowed above. 
The truncation of the palpi and the attenuation posteriorly 
of the mesosternum amply distinguish this genus. The shape 
of the palpi is an anomaly amongst the Lamiaires, the pointed 
terminal joints being one of the very few characters which di- 
stinguish the tribe from the Cerambycides. The facies of the 
insect composing this genus, however, is entirely that of a La- 
miaire, the shape of the thorax and elytra being almost precisely 
that of certain abnormal species of Acanthoderes , e. g. A. hehes. 
Ozotroctes punctatissimus, n. sp. 
O. oblongo - ovatus, subdepressus, obscure hmnneo - ferrugineus : 
corpore supra punctis rotundis innumerosis impresso. Long. 
41 lin. $ . 
Head brown, punctured. Antennae about as long as the 
body, rufo-piceous, all the joints ringed with a paler shade. 
Thorax with the dorsal tubercles very distinct, conical, the rest 
of the surface almost even, punctured. Elytra very slightly 
truncated at the extreme apex, the centro-basal ridges short, the 
whole surface covered with punctures of a uniform size, partly 
arranged in rows. Beneath ashy-brown, shining. Legs dull 
ferruginous, spotted with a paler shade. 
One individual, beaten from dried twigs in woods near San- 
tareni. 
Genus .^thomerus, 
Thomson, Class, des Ceramb. p. 338. 
Syn. Macronemus, Dej. Cat.; White, Cat. 
Char, emend. Body subcylindrical. Muzzle moderately 
broad, quadrate; front plane; antenniferous tubercles short, 
prominent, widely separated at their bases. Antennae naked, 
excessively elongated, in some species being five or six times the 
length of the body, capilliform ; the joints slightly increasing in 
length to the apex, the eleventh joint generally the longest ; the 
basal joint short, very slender at the base, abruptly enlarged into 
an ovate club. Palpi normal. Prothorax unituberculated on 
the sides. Elytra rounded at the tip. Femora clavate ; tarsal 
joints short. Prosternum greatly constricted between the large 
anterior coxse. 
The sexes are not distinguishable, as in Longicornes gene- 
rally, by the relative length of the terminal antennal joint in 
most of the species ; there is a sexual character, however, in the 
F 
