34 LONGICORNIA. 
belonging to the genus, are doubtful. 0. fuscatum, Chevr., of West Africa, at any 
rate, is quite distinct from Obdrium, forming the type of the genus Ossibia, Pasc. 
(=Obriaccum, Thoms. Typi Ceramb. p. 55). 
1. Obrium albifasciatum. 
Obrium albifasciatum, Bates, Trans. Ent. Soc. 1872, p. 182. 
Hab. Nicaragua, Chontales (Belt). 
DISTENIA. 
Distenia, Serv. Encyl. Méth. x. 1825, p. 485. 
This genus, with several others very closely allied to it, was marked off by Lacordaire 
as a separate “ Division” of Section B of the first ‘“‘ Cohorte” of Cérambycides, owing 
to a peculiarity in the insertion of the antenne, which are placed more forward on the 
head, in front of the eyes and near the mandibles. ‘This peculiarity is distinctive of 
the Prionide family, but is not observed in any of the Cerambycide, to which the 
Distenie belong in all other respects. It must be borne in mind, however, that a 
large number of the Lepturina show an approximation to this structure, and (what is 
of much importance in estimating the affinities of these difficult forms) great vacillation 
in the position of the antenne. Since Lacordaire wrote, several aberrant forms of 
Lepturina which approach the Distenie in many respects have been discovered in 
Madagascar; and it is probable the views of Latreille and Serville were more correct, 
and that Distenia &c. are really allied to the Lepturina—in which case their position 
would be between the subfamily Cerambycine and the Lepturine group, where I now 
place them. The degree of coarseness in the faceting of the eyes is variable in the 
Distenia group, as it is in those genera of Lepturina to which the Disteni@ are nearest 
allied in other respects. In most of the large American species the eyes are coarsely 
faceted. In Lacordaire’s system the Disteniw were relegated to the end of the family, 
without any indication of their affinities. 
The Distenie are widely distributed over the warmer parts of the globe; they are 
found in North and South America, Africa, India, the Malay archipelago, and Japan. 
None have yet been detected in Europe or Australia. They appear to be mostly 
nocturnal in their habits. . 
1. Distenia pilatei. 
Distenia pilatei, Chevrolat, Rev. Zool. 1857, p. 104, pl. vi. f. 2. 
Hab. Nicaraeva, Chontales (Belé, Janson). 
2. Distenia fimbriata. 
Distenia fimbriata, Lacord. Gen. Col. ix. p. 228, note. 
Hab. Guatemata, Capetillo (Champion). 
