PHRYNIDIUS.—MONEILEMA. 93 
2. Phrynidius echinus. 
Minus elongatus, tomento compacto squamoso fusco vestitus, sparsim distincte punctatus; capite retracto; an- 
tennis basi approximatis, ab oculis distantibus, scapo curvato, articulo tertio maxime elongato, quarto breviore, 
ceteris brevissimis equalibus; thorace minus elongato, medio paullulum dilatato-rotundato, disco con- 
vexo plurinodoso ; elytris ovalibus, humeris nullis, utrinque tuberculis circiter duodecim subseriatis ; tibiis 
intermediis extus juxta apicem oblique sulcatis. 
Long. 4 lin. 
Hab. Guatemata, San Juan, Sabo, Vera Paz (Champion). 
More oval than P. singularis; thorax much shorter and its surface more even, 
marked with a few distinct punctures; the elytra also smoother between the conical 
tubercles and more regularly punctured. The antenne are different in the proportions 
of their joints, the scape being much shorter, while the third and fourth joints are much 
longer, being together as long as all the rest of the antenne, the fourth less than half 
the length of the third, which latter is half as long as the scape. At the base they are 
not so closely approximated, and for that reason less distant from the eyes. 
8. Phrynidius inzqualis. 
Moneilema inequalis, Say, Bost. Journ. Nat. Hist. i. 1835, p. 193°. 
Phrynidius inequalis, Lacordaire, Gen. Col. ix. p. 262. 
Hab. Mexico}, Jacale, Volcan de Orizaba (Sal/é). 
Nearly of the same size as P. echinus, but much narrower and differing by the thorax 
being covered with irregular elevations and by the scape of the antenne being longer 
than the second and third joints together. 
MONEILEMA. 
Moneilema, Say, Journ. Ac. Phil. iii. 2, p. 403 (1824). 
Collapteryx, Newman, Entom. Mag. v. p. 397 (1838). 
Monilema, Leconte, Journ. Ac. Phil. ser. 2, ii. p. 167 (1852). 
This genus is the North-American representative of the Palearctic Dorcadion, and 
is nearly confined to the western and southern regions of the continent, one species only 
being found so far east as the State of Missouri. ‘The species are numerous in Mexico ; 
but it is exceedingly probable that many of those described are only varieties, some 
of them being variable in punctuation and in the amount of pale tomentum with which, 
especially on the upper surface, they are variegated. If we may judge by the form of 
the thoracic tubercles and the humeral angles of the elytra, and disregard sculpture and 
tomentose markings, the following eight would constitute only one variable species— 
C. carinatum, Leconte, levidorsale, albopictum, infamie, perforatum, mortuale, and 
sinistrum. 
