160 HETEROMERA. 
slightly constricted just before the base (the hind angles in consequence somewhat distinct and subrect- 
angular), the anterior angles rounded, the basal fovez very shallow, the surface finely but not very closely 
punctured; elytra regularly and distinctly punctate-striate, the interstices finely punctured, without 
sublateral carina; beneath finely and sparingly punctured ; meso- and metasternum longitudinally exca- 
vate in their basal halves. 
Length 34-4 millim. (¢ 2.) 
Hab. GuatemaLa, Las Mercedes, Cerro Zunil (Champion). 
Four examples. This species, though not possessing the flattened form and sublateral _ 
carina to the elytra characteristic of the other species, agrees in general structure with 
Doltiema, and I place it accordingly in that genus. Compared with the other species, 
the legs are rather shorter, and the antenne of the male are scarcely longer than those 
of the female. The angular extension of the sides of the head varies a little, according 
to development, in the male; there is no tooth beneath. 
SITOPHAGUS. 
Sitophagus, Mulsant, Hist. Nat. Col. de France, Latigénes, p. 264 (1854) ; Ann. des Sci. phys. et 
nat. d’Agric. de Lyon, sér. 3, iii. p. 204; Lacordaire, Gen. Col. v. p. 887; Jacq. Duval, Gen. 
Col. d’Europe, iii. p. 806 (nec Horn). 
Adelina; Wollaston, Ann. & Mag. Nat. Hist. ser. 3, ii. p. 413 (1858) ; Col. Atlant. App. p. 61 (nec 
Leconte). 
This genus was described by Mulsant for the reception of a single male example 
(figured in Jacq. Duval, op. cit.) of an introduced insect captured at Marseilles. Four. 
years later Wollaston, probably overlooking Mulsant’s description, again described the 
genus under another name, Adelina, upon examples introduced into Madeira in a cask 
of bad flour. The latter author suspected the specimens were of American origin ; a 
comparison of a common Central-American species with Wollaston’s type in the British 
Museum Collection proves the correctness of this surmise and of the identity of the two 
insects. To increase the confusion, the genus has not been properly identified by 
American coleopterists—Leconte referring two species of a then undescribed and 
different genus (Doliema) to it; Horn (Rev. Ten. of Am. north of Mexico, p. 346), later 
on, adopting Sitophagus for the same species. Again, Reitter (Mitt. des Miinchen. Ent. 
Ver. i. pp. 8-10) has described three species of this genus: S. castaneus from Mexico— 
this we now know to be identical with our common species; S. cavifrons (the type of 
which has been kindly lent me by M. Réné Oberthiir), from Venezuela, belongs to 
another genus; and S. turcicus, from the Balkans, also probably not referable to the 
genus. 
We have now to record four species from Central America, all of which are found 
beneath bark, more especially in the forest-region. At least one species of this genus, 
though originally of subcortical habits, seems to have acquired a taste for meal, parallel 
cases to which are well known in this group of Tenebrionide. S. cynwoides is included 
with some doubt, it may possibly form the type of a new genus. 
