32 RHYNCHOPHORA. 
Hab. Mexico, Cuernavaca (Sailé), Cerro de Plumas (Hége); British Honpuras, 
Belize (Blancaneaux); GuaTEMALA, Cerro Zunil (Champion); Nicaragua, Chontales 
(Belt). 
The subcylindrical form of this and the following species readily distinguishes them 
from J’. ducalis, to which, however, they appear to be so closely allied in most other 
respects that. it is scarcely necessary to repeat the description. In the female the 
prorostrum is much longer than the metarostrum ; the serial sculpture is not continued 
beyond the pterygia. 
Seven specimens. The individual from Belize is a female, and differs from the other 
individuals of that sex in the metasternum not being sulcate, but possessing only an 
elongate fovea at the apex. 
VASSELETIA, gen. nov. 
Antenne breves, vix clavate. Caput posterius parum constrictum, oculis ad basin sitis. Abdomen segmentis 
primo et secundo brevibus, a sutura profunda divisis. 
The Trachelizus vasseleti of Boheman differs totally in appearance from the other 
* species of the genus, and is distinguished by the possession of a character of extreme 
rarity in Brenthide, the first and second abdominal segments being divided by a suture 
as deep as are those of the following segments. I therefore separate it as a distinct 
genus. The facies is that of Hormocerus, a genus which, in the male, possesses a 
stridulating-organ on the propygidium. I am not able to ascertain whether this struc- 
ture also exists in Vasseletia. 
1. Vasseletia vasseleti. (Tab. II. fig. 1, ¢.) 
Trachelizus vasseleti, Boh. in Schénh. Gen. Cure. v. p. 498°. 
Hab. Mexico! (Sallé). 
I have seen of this remarkable little Brenthid only the two individuals from Sallé’s 
collection, labelled “type.” We have no other Brenthid of this facies, and I shall not 
be surprised if it prove to be recorded as Mexican in error. 
Group AMORPHOCEPHALINA. 
This group has been proposed by Power (Ann. Soc. Ent. Fr. 1878, p. 478) since the 
publication of Lacordaire’s classification of the Brenthide. Although far from satis- 
factory as regards the association of Eupsalis with Amorphocephalus, yet I here make 
use of it in order to separate two very difficult genera from the Arrhenodina. Our 
genus Hemipsalis may be placed in Amorphocephalina, on account of being allied to 
Eupsalis; and I also place temporarily in the group another new genus, which bears 
a great superficial resemblance to Hemipsalis; great difficulty exists, however, in 
classifying this genus in the system at present in vogue. 
