MALACODERMATA. . 313 
MELITOMMA (p. 110). 
Melitomma brasiliense (p. 110). 
To the localities given, add :—Panama, Bugaba (Champion). 
'" ATRACTOCERUS (p. 111). 
Atractocerus brasiliensis (p. 112). 
To the localities given, add :—Muxico, Presidio (forrer) ; Costa Rica (Van Patten). 
COLLOPS (p. 113). 
Collops bipunctatus (p. 113). 
To the Mexican localities given, add :—Northern Sonora (JJorrison). 
Collops tricolor (p. 113). 
Collops tricolor, Horn, Trans. Amer. Ent. Soc. ii. pp. 80, 81. 
Dr. Horn compares this species to C. punctatus, Leconte. The species which we 
have received from Morrison under that name differs considerably, and is perhaps not 
the species referred to by Dr. Horn. There are, however, several very nearly allied 
species probably confounded under this name. C. tricolor (typical form) has the head 
rufous in front as far as the insertion of the antenne, of which the basal joint is entirely’ 
red ; and in the male the large third joint is dark externally, and the succeeding joints 
fuscous; in the female the second and third joints are rufous externally. 
Specimens occurred in Mexico at Oaxaca (Hége), at Etla and Parada (Sallé), and 
there was one in Sallé’s collection from Sturm’s. A variety (possibly an extremely 
closely allied species) has the dark colour of the head extending between the antenne, 
so that they are inserted on a dark ground ; these are from Oaxaca (Hége) and Puebla 
(Sallé). 
A very curious hermaphrodite, or, rather, gynandromorphous example of this latter 
form has been sent from Oaxaca (Hége), of which a figure is given on Plate XIII. 
figg.1,1a. The antenna on the right side has a small clavate process arising from the 
basal joint, the fifth joint is enlarged and acuminate on its inner side, and with a 
mucro at its apex, forming together the clasping-organ for the retention of the female 
antenna during copulation, which is the object of all the various distortions we meet with 
in the male antenne of the Malachiide. On the left side, however, the antenna is that 
of a normal female. The andromorphism, however, would not seem to extend to the 
whole of the body; forit happens that the tarsi of the male in Collops are four-jointed, 
BIOL. CENTR.-AMER., Coleopt., Vol. III. Pt. 2, Apri/ 1886. 2S. 
