PRIONOMERUS. 215 
apices broadly and separately rounded; rather coarsely punctate-striate, the interstices feebly convex and 
closely, minutely punctate. Legs short. 
Length 3-3,,, breadth 23-23 millim. (¢ 2.) 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
Numerous examples. Differs from the following species in the absence of the 
median carina on the prothorax. In the British Museum there is an unnamed insect 
from Minas Geraes, Brazil, which is very like P. femoralis, but differs from it in having 
the prothorax rugosely punctured and less conical in shape,and the intermediate 
femora wholly red. 
4, Prionomerus carinatus, sp.n. (Tab. XII. fig. 10, prothorax.) 
Extremely like P. femoralis, but with the intermediate and posterior femora and tibie often entirely rufescent ; 
the prothorax with a sharp median carina extending from the middle to the base; the elytra coarsely 
and deeply punctate-striate; the eyes a little more prominent; the rostrum in the d very short, and 
sparsely, coarsely punctate. 
Length 3;,-33, breadth 23-24 millim. (d @.) 
Hab. Mexico, Toxpam (Sallé), Jalapa (Hoge); Guatemaua, Coban (Conradt). 
Seven specimens. A northern form of P. femoralis, and certainly requiring a name. 
Both are often covered, when fresh, with a reddish or reddish-ochreous efflorescence. 
5. Prionomerus rugicollis, sp.n. (Tab. XII. figg. 11, 11 a-c.) 
Broad, robust, opaque, deep black, the antenne piceous, with the club reddish at the tip, the tarsi rufo- 
testaceous; clothed with a very fine brownish pubescence. Head almost smooth; rostrum short and 
stout, shining, sparsely punctate, the punctuation closer at the base; antenne short, joints 2-7 of the 
funiculus closely articulated, 3-7 strongly transverse and becoming wider outwards, the club compact and 
distinctly longer than the funiculus. Prothorax a little broader than long, conical, constricted before 
the apex, the entire surface densely, rugosely punctate. Elytra broadly subquadrate, transversely 
gibbous immediately below the base, the humeri oblique in front and a little swollen, the apices separately 
rounded; deeply punctate-striate, the interstices moderately convex and closely punctate. Legs short ; 
anterior tibie stout, very finely serrate and ciliate on the inner edge to about the middle, abruptly. 
truncate at the apex. 
Length 24, breadth 13 millim. 
Hab. Muxico, Jalapa (Hége). 
One specimen. Allied to P. femoralis and P. carinatus, differing in its dull surface, 
the rugose prothorax, the black femora, the relatively shorter legs, &c. From 
P. bigibbosus, Boh., it is sufficiently distinguished by the absence of the large tubercle 
on the disc of each elytron; and from the North-American P. calceatus, Say (carbo- 
narius, Gyll.), by its shorter form, more prominent humeri, less rugose elytra, and 
shorter legs. In the British Museum there is a mutilated insect from Cayenne 
(labelled with the MS. name of P. flavitarsis, Jekel) that is very like P. rugicollis, 
but differs from it in having the scape and funiculus of the antenne testaceous. 
