SILVANUS. 561 
than in the allied forms, the sixth joint longer than broad. ‘There is no spine behind 
the eyes, which extend very nearly to the hind margin of the head. ‘The thorax is rather 
deeply sinuate on the front margin behind the eye, and the front angle projects a good 
deal forwards, but scarcely at all outwards; the surface is unusually coarsely rugose, and 
only by minute examination can any trace of longitudinal impressions be found. Nine 
specimens. 
It may be well to mention that the late H. K. Morrison sent me from Arizona an 
insect allied to S. guatemalenus, but with shorter elytra and differing in several other 
respects, as S. didentatus. Our editors also received a specimen of the same species 
from Morrison labelled as coming from Northern Sonora. This locality is, I think, 
open to doubt. 
4. Silvanus vulgaris. 
Silvanus vulgaris, Grouv. Ann. Soc. Ent. Fr. 1878, p. 74, t. 2. fig. L1*. 
Hab. Mexico, Cordova (Sal/é!); Guatemaua, El Tumbador, Zapote, San Geronimo, 
Balheu, Purula, Senahu (Champion). 
We have received a good series of this species. In it the anterior margin of the 
thorax is not in the least sinuate behind the eye, and the front angle is slightly 
prominent exteriorly, but not in the least anteriorly. 
5. Silvanus trivialis. 
Silvanus trivialis, Grouv. Aun. Soc. Ent. Fr. 1878, p. 75, t. 2. fig. 138'; Champ. Trans. Ent. Soc. 
Lond. 1898, p. 408°. 
Hab. Mexico, Motzorongo (Flohr), 'Teapa (fH. H. Smith); British Honpuras, Rio 
Hondo (Blancaneaux); GuatemaLa, Zapote, Senahu (Champion).—SovuTH AMERICA, 
Brazil!; ANTILLES, St. Vincent, Grenada ?. 
6. Silvanus nitidus. 
Cathartus nitidus, Grouv. Ann. Soc. Ent. Fr. 1889, p. 162, t. 6. fig. 6°. 
Hab. Mexico, Motzorongo (Pohr), Cordova (Hége), Teapa (H. H. Smith); GuaTEMALA, 
Zapote, San Juan, Senahu (Champion).— VENEZUELA, Caracas !. 
7. Silvanus consors, sp.n. (Tab. XVII. fig. 26.) 
Haud depressus, subnitidus, discrete punctatus, ferrugineus ; oculis convexis, liberis ; prothorace subquadrato, 
lateribus utrinque post angulum anteriorem parum prominulum leviter sinuatis ; elytris seriatim punctatis. 
Long. 24 millim. 
Hab. GuateMata, near the city (Champion). 
Antenne rather small, joints 4-8 subequal, 9-11 forming an abrupt rather large 
club. Head short. ‘Thorax about as long as broad, the front margin nearly straight, 
the anterior angles projecting a little externally, the sides slightly narrowed behind ; 
rather closely and distinctly punctured. Elytra broader than the thorax, with distinct 
BIOL. CENTR.-AMER., Coleopt., Vol. II. Pt. 1, February 1900. 4 C* 
