278 Mr. H. W. Bates on the Longicorn Coleoptera 



tris singulis basi subtuberculatis, medio tuberculo supra acuto et 

 apice postice producto : elytris singulis apice fasciis duabus fus- 

 cis : abdominis segmentis subtus lateribus fusco maculatis : pedi- 

 bus griseis ; femoribus intus fusco punctulatis ; tibiis apice late 

 fusco. Long. 6 lin." (White, /. c.) 



The elongated form and grey colour of this species give it 

 some resemblance to jEffomorphus, in which genus Mr. White 

 placed it ; but its depressed body would seem to suggest rather 

 a relationship with the Oreoderce. The great length and flexuous 

 shape of the basal joint of the antennse show, however, that its 

 true place is amongst the Acanthocinitse ; and its strongly raised 

 centro-basal ridges and acute lateral thoracic tubercles point out 

 an affinity with the species I have grouped under the genusLopho- 

 poeum. Its form is elongate-oblong and depressed ; the elytra 

 have not very prominent shoulders, and do not taper to the apex ; 

 they therefore have not the trigonal shape which is usual in Lo- 

 phopceum and Alcidion : as the species of these genera, however, 

 vary in general shape, this is of less importance. The elytra are 

 sinuate-truncate at the apex, and have both angles of the trun- 

 cation slightly produced; there is no lateral carina, and the 

 dorsal surface, with the exception of the strongly raised and 

 naked centro-basal ridge, is free from rai.-3ed lines. The thighs 

 are strongly clavate, and the basal joint of the tarsi elongated. 



Taken at Para, and also at Ega on the Upper Amazons ; the 

 species has therefore a wide range. 



Genus Ozineus, nov. gen. 



Body small, slender, depressed, and posteriorly attenuated. 

 Antennae as in Alcidion and the allied genera. Thorax with the 

 lateral spines short, placed much behind the middle — in some 

 species close to the hind angles, and in others coincident with 

 them, but remaining always distinct. Elytra narrowed to the 

 tips, which are truncated and toothed or spined ; the centro- 

 basal ridges prominent, but generally much smaller than in 

 Luphopoeum and Alcidion. Legs moderate in length ; thighs 

 abruptly clavate ; tarsi slender, with the basal joint elongated. 



This genus seems to form a connecting link between Lopho- 

 pcemn and the well-known group Anisopodus. Some of the 

 species are almost as much flattened as the Anisopodi, but their 

 hind legs are never elongated as in Anisopodus; the possession 

 of prominent centro-basal ridges on the elytra is also a good 

 distinctive character. 



The species are all small and fragile ; they are found, like 

 most of those of the allied genera, on the bark of broken and 

 decaying branches of trees in the forest, undergoing their trans- 

 formations beneath the bark. 



