LatliruUina.} CLAVICORNIA. 279 



contains eight genera ; of these, however, Agelandia, Reitter, cannot be 

 retained, and together with Langelandia must be either placed with the 

 Colydiidae or formed into a new family ; the tribe, as far as our fauna 

 is concerned, consists of the old genus LatJiridius, which has, however, 

 been divided by Thomson into five genera ; of these four are here 

 retained. 



I. Thorax with two fine longitudinal keels on disc. 



i. Club of antennae not abrupt ; eyes nearly touching 



anterior angles of thorax ; temples very small . . . LATHBIDITTS, Herbst. 

 ii. Club of antennae abrupt ; eyes considerably removed 



from anterior angles of thorax ; temples large . . . CoNlNOMUS, Thorns. 



II. Thorax without longitudinal keels on disc. 



i. Upper surface more or less convex ; head shorter with, 



the eyes large and the antennae situated at a little 



distance from them ENICMUS, Thorns. 



ii. Upper surface depressed, elongate ; head longer, at 



least as long as broad with the eyes small and the 



antenuao inserted at a considerable distance from them. CABTODERE, Thorns. 



The genus Lathridius, taken in its widest sense, as including the 

 above genera, contains over one hundred and thirty species, the majority 

 of which are found in Europe, Northern Asia, and North America ; the 

 genus, however, is widely distributed, species occurring in Ceylon, 

 India, Cape of Good Hope, Havannah, the Australian region, &c. ; some 

 of them are almost cosmopolitan, as they occur in substances that are 

 articles of commerce ; the Lathridii are very variable in several points 

 of structure, and hence considerable confusion has arisen, as may be 

 known from the number of synonymous species recorded. 



X.ATHRXDIUS, Herbst. 



The species of Lathridius proper are distinguished from the other 

 genera with the exception of Coninomus by the fine longitudinal keels 

 on the disc of the thorax, and from this as well as from the others by 

 the very narrow width of the thorax in comparison with that of the 

 elytra ; there are two British species, L. lardarius and L. angulatus. 

 L. angusticollis, which has been usually reputed to be a rather common 

 British species, appears not to be indigenous ; until recently only one 

 or two British specimens of L. angulatus have been recorded ; this 

 has been evidently owing to the fact that all our specimens in collec- 

 tions have stood undoubtedly as angusticollis ; Mr. Crotch and one or 

 two other collectors have sent doubtful specimens of this insect to con- 

 tinental authorities who have returned them as angulatus, and they 

 have therefore been recorded as different from the series they were 

 taken from, although really they were the same, and all ought to have 

 been referred to angulatus.. 



I. Elytra glabrous, much contracted and prolonged in a 



point behind ; size larger L. LABDAEIUS, De Q-. 



