MEGALOSTOMIS. | 71 
Megalostomis dimidiata (p. 30). 
To the localities given, add :—Mextco, Monclova in Coahuila (Dr. Palmer), Ciudad 
in Durango 8100 feet (Forrer), Durango city, Zapotlan, Colima city, Guadalajara in 
Jalisco, Chilpancingo in Guerrero, Irapuato, Matamoros Izucar in Puebla, Tacambaro 
in Michoacan (Hége), Oaxaca, Capulalpam, Cuernavaca, Guanajuato, Vera Cruz (Sailé). 
Numerous additional specimens have been received from Mexico; these vary in the 
pattern of the elytra, that is in regard to the amount of fulvous and black. In the 
variety figured (Tab. II. fig. 14) the black colour is absent; in the normal form the 
anterior half of the elytra is fulvous. The more conical, posteriorly narrowed, shape 
and the absence of the conical tubercle on the pygidium (instead of which a narrow 
denuded space with a raised central ridge is visible) principally distinguish IM. dimidiata 
from M. notabilis. 
Megalostomis tomentosa (p. 30). 
To the localities given, add:—MeExico, Oaxaca, Cuernavaca (Sallé), Colima city, 
Acapulco, Iguala in Guerrero, Matamoros Izucar, Tehuantepec (foge); GUATEMALA, 
Las Mercedes (mus. Stuttgart); Panama, Bugaba (Champion). 
The additional material, since received, enables me to add some more particulars in 
regard to this species :—The antenne vary in length according to the sexes, and extend 
in some specimens quite to the middle of the thorax ; the black posterior portion of the 
elytra often varies considerably in extent, and assumes in some examples the shape of a 
narrow transverse band, leaving the apex fulvous. I. tomentosa is not more than half 
the size of WV. dimidiata, and the elytra are always very finely rugose and transversely 
wrinkled. In the original description I have omitted to state that the tibie are more 
or less fulvous and densely pubescent and the tarsi black. The individuals obtained 
in the State of Panama are all of small size (3 lines), and some are so densely clothed 
with white pubescence as to nearly obscure the colour of the upper parts; but I am 
unable to detect any other difference between these specimens and those from Mexico. 
5 (4). Megalostomis femorata. (Tab. XXXVI. fig. 20.) 
Subcylindrical, parallel, black, pubescent; thorax twice broader than long, finely punctured and pubescent ; 
elytra finely rugose-punctate and pubescent, fulvous, the posterior portion of the disc and the suture black ; 
posterior femora dentate. 
Length 3 lines. 
Hab. Mexico, Ventanas in Durango (Hége). 
The single male specimen obtained by Herr Hoge during his second expedition 
differs so much from the corresponding sex of the preceding species in the shape of its 
thorax and in the tooth near the apex of the posterior femora that I must separate it, 
although the general system of coloration is exactly similar. The thorax in JZ. femorata 
is much less transverse than is the case in I. tomentosa, and its lateral margin (instead 
