Longicorn Coleoptera of the West India Islands. 119 
Olbiiis sexfasciatus, Thorns., Syst. Ceramb., p. 204. 
Hah. Jamaica. 
Lacordaire was scarcely justified in sinking this genus. 
In addition to the points which he has mentioned, it 
differs also from Poeciloderma in the form of the pro- 
sternum, the intercoxal part of which is a flattened plate, 
sHghtly dilated behind, where it rests directly on the 
anterior part of the mesosternum. The correspondiog part 
of the presternum in Pceciloderma has a broad wedge- 
like ending behind, being provided with a narrower and 
somewhat concave, or backwardly-inclined, posterior 
face, which makes an acute angle with the lower hori- 
zontal face. The proportions of the joints of the 
antennee are also somewhat difl'erent. 
Plecteoceeum, Lacordaire. 
139. Plectrocerum spinicornej Oliv. 
Callidium spinicorne, Oliv., Ent. iv., No. 70, p. 68, 
pi. 8, fig. 100 (1795). 
Hah, Haiti. 
140. Plectrocerum crihratum, Salle, Ann. Soc. Ent. Fr., 
1856, p. 689, pi. 20, fig. 3. 
Hab. Haiti. : . 
Teachydeees, Dalman. 
141. Trachyderes succinctuSj Linn. 
Ceramhyx succinctiis, Linn., Syst. Nat., Ed. x., p. 391. 
Hah. Grenada (H. H. Smith), Guadeloupe (Delauney, 
Vitrac) ; Trinidad, Cayenne, Colombia. 
OxYMEEUs, Serville. 
142. Oxy merits luteus, Yoet. 
Ceramhyx luteus, Yoet, Cat. Coleopt. ii,, p. 17, pi. 16, 
fig. 68. 
Trachyderes rivulosus, Germar, Ins. Sp. Nov., p. 512. 
Oxymerus lehasii, Dup., Mon. in Mag. de Zool., Classe 
ix., Insectes, 1838, p. 35, pi. 224, fig. 13. 
Hah. Grenada, Mustique I. (Grenadines), and St. 
