1901.] ON NEW PHYTOPHAGOUS COLEOPTERA. 153 



Plate XIII. 

 Postorbital region of Lemurs and Monkeys. 

 yr.= frontal; ^a. = parietal ; S2'. = squamosal; ma. = maXa,r ; as.=alisphenoid. 



Fig. 1. Propithecus edwardsi (Br. M. No. 75.1.29.6). 



2. Cebiis sp. inc., young (Br. M. No. 96.8.1.1). 



3. Hylohates synclactylus (Br. M. No. 84.4.24.8). 



< 4, Cebus sp. inc. (Br. M. No. 67.4.12.57). This is the only skull, out of 



42 of Cebus, in which the parietal is separated from the malar 

 by the union of the frontal with the alisphenoid. 



5. Cercopithecus patas S (Br. M. No. 99.7.7.1). 



6. Brachyteles arachnoides (Br. M. No. 43.10.12.2). 



7. Bra^hyteles arachnoides (Br. M. No. 48.10.25.3), young (deciduous 



dentition). 



8. Semnopithecus cristatus, very young (deciduous dentition). (R. Coll. 



Surg. London, No. 102). 



9. Bhinopithecus roxellance § (Br. M. No. 99.3.1.2). 



10. Bapio sp. inc., ^ young (tooth-change) (Br. M. No. 0.1.3.2). 



7. Descriptions of some new Species of Phytophagous 

 Coleoptera of the Family Chlamyd<s. By Martin 

 Jacob Y, F.E.S. 



[Received February 11, 1901.] 



(Plate XIV. ') 



Amongst all the Phytophagous Coleoptera there is perhaps no 

 group more difficult in regard to the description and deter- 

 mination of the species than the Chlamydoe. A very large number 

 of species, the majority of which have in common a similar 

 arrangement in regard to their elytral sculpturing (often A'ery 

 complicated, ill-defined, and interrupted by larger or smaller 

 tubercles), makes the descriptions extremely difficult to render so 

 that other students can follow the arrangement; to make matters 

 worse, all the published figures of the Chlamydce are, with but few 

 exceptions, unrecognizable, and neither those of King nor KoUar 

 give any clear idea of the true sculpturing of these insects. The 

 figures published by Messrs. Godman and Salvin in their great 

 work on Central America are the only reliable ones available. In 

 the present paper I have tried to describe those species which I 

 believe to be new to science, and which are represented in my 

 collection, as clearly as I am able to ; and I hope that the deter- 

 mination of some of the more important forms will be much assisted 

 by the figiu'es, the last three of which (Plate XIV. figs. 10-12) are 

 those of species previously described. 



Chlamys lacordaibei, sp. n. (Plate XIV. fig. 8.) 



Flavous, the elytra darker, terminal joints of the antennas black ; 

 head and thorax finely reticulate, the former with one, the latter 

 with several obscure fidvous spots, its posterior portion slightly 

 raised, bounded by a transverse ridge behind ; elytra closely and 

 strongly punctured, with three ferruginous spots at the middle of 



^ For explanation of the Plate, see p. 164. 



