PRIONOBRACHIUM.—CAMAROTUS. 289 
Group MENEMACHINA. 
Meénémachides, Lacordaire. 
Faust refers a single Tropical-American genus, Prionobrachium, to this group. 
It is a close ally of Chelotonyx (which, following Lacordaire, has already been dealt 
with under the Ceratopina, anted, p. 126 *), both genera having the anterior coxe 
somewhat widely separated, the anterior femora armed with a very large, triangular, 
serrated tooth (as in Prionomerus), and the tarsal claws furnished with a long, slender 
tooth (as in Anthonomus).  Chelotonyx would, therefore, be better placed next 
Prionobrachium, in the Menemachina. 
PRIONOBRACHIUM. 
Prionobrachium, Faust, Stett. ent. Zeit. 1893, p. 341. 
_ The principal characters separating this genus from Chelotonyx are the shorter and 
very much stouter rostrum, the more prominent ocular lobes to the prothorax, and 
the shorter and broader outer joints of the funiculus, which here forms an almost. 
continuous outline with the club. 
1. Prionobrachium schonherri. (Tab. XV. figg. 1, 1 a.) 
Prionobrachium schinherri, Faust, Stett. ent. Zeit. 1893, p. 341°. 
Hab. Mexico, Ventanas (Hége), Guanajuato (Sallé), Amatan (flohr), Teapa (H. H. 
Smith); GouatemaLa, Zapote (Champion); Panama, Bugaba, David, Tolé (Champion).— 
VENEZUELA, San Esteban !. 
Found in numbers at Teapa, Bugaba, and David. ‘The length varies from 
24-42 millim. 
Group CAMAROTINA. 
Camarotides, Lacordaire. 
The single known genus of this group is confined to Tropical America. All the 
species are extremely rare in collections, some of them, including the two now added, 
bearing an extraordinary resemblance to various Cassidide, of the genera Omoplata, 
Selenis, &c. Two have been figured, one by Imhoff, the other by Karsch. 
CAMAROTUS. 
Camarotus, Schénherr, Gen. Cure. i. p. 185 (1833) ; Lacordaire, Gen. Col. vii. p. 26. 
1. Camarotus singularis, sp. n. (Tab. XV. figg. 2, 2a, 8.) 
Broad, robust, shining, rufo-ferruginous, the antenne and tarsi testaceous. Head and rostrum coarsely, 
sparsely, irregularly punctate, the punctures here and there longitudinally confluent, the rostrum broadly 
* A third specimen of C. fasciculatus has since been detected in our collection; it is from the Rio Hondo, 
British Honduras (Blancaneauc). 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 4, November 1903. 9 Pp 
