304 Eev. W. W. Fowler on new 



species, but which has as yet, owing to simple and 

 constant habits, been evolved in the direction of growth 

 in the longitudinal axis only." In the genus Crotcliia, 

 which I describe below, especially in the smaller and 

 broader forms, there seems to be a more distinct 

 approach to the Chrysomelidous type than has yet been 

 noticed in the group, although the development of growth 

 otherwise than in a longitudinal axis has been noticed 

 by Mr. Lewis himself in the case of L. trifuliata, Har., 

 which will be again alluded to. 



In his paper on the Langnrice (Beitnige zur Iventniss 

 der Languria-Arten, Mittheil d. Miinchener Ent. Ver., 

 1879), Yon Harold classes all the species of the group 

 under the single genus Lamjuria; if there were very 

 few species, or if the generic divisions were not obvious, 

 this might be permissible, but in the first place it 

 appears certain that when the species are all described 

 they will amount to some hundreds at least ; and in the 

 second place, if w^e are to class the large Fatua longi- 

 cornis, with its long, slender, clubless antennae, in the 

 same genus with, for instance, the minute M. Jmisoiii, 

 with its short antennae and abrupt three-jointed club, 

 we might with quite as good reason class the great 

 majority of the Chrysomelidce and Erotylidoi under one 

 genus. At the same time Crotch, whose work on the 

 group has hitherto been generally accepted, appears to 

 lay far too much stress on the number of joints in the 

 club : this is often a misleading character, and some- 

 times very difficult to decide ; in fact. Crotch himself, in 

 his types, occasionally differs in this point from his 

 descriptions. Owing, however, to his having made this 

 a leading character in some of his genera, I have been 

 obliged in one or two cases to adopt new genera, e. g., 

 Ti'tralancjiiroidcs and OrtlwlaiKjuroides, the insects be- 

 longing to which are closely allied to Tetralanguria and 

 Ortholanfjuria respectively, but have a distinct five- 

 jointed club to the antennae instead of a four-jointed 

 one, as in the two latter genera. It 'should, however, 

 be added that Crotch had himself set aside the species 

 on which I describe Tetralaiuivroidcs as a new genus, 

 and that he had i:>laced Ortholamjuroidcs under Ortho- 

 langnria ; his specimen, however, had no antennae, but 

 there is one specimen in Mr. Gorham's collection and 

 two in the British Museum collection that possess them. 



