1898.] OK THE SBaBICOETT COLEOPTfiBA OF ST. TIKCBNT. 315 



that the object is aposematic, the effect being achieved by a rapid 

 transformation and apparent increase of si?,e. 



In conclusion, it is a pleasant duty to offer to ray teacher, Pro- 

 fessor Howes, my best thanks for the loan of literature and many 

 references ; and to my colleagues, Messrs. E. ,J. Allen and W. 

 Grarstang, for much assistance in various ways. I hope to be able, 

 before long, to give a more complete account of the coloration- 

 elements and mechanism and of the palatability of the species at 

 different stages of the life-history. 



EXPLANATION OF PLATE XXVI. 



The Dragonet, Callionymus lyra. Male in full breeding-colour, in attitude 

 of courtship. Drawn from a specimen living in the Marine Biological 

 Association's Aquarium, Februai-y 1898. Reduced two-seyenths. 



2. On the Serricorn Coleoptera of St. Vincent^ Grenada, 

 and the Grenadines {Malacodermata, Ptinidce, Bos- 

 try chidcB), with Descriptions of new Species. By 

 Henry S. Gorham, F.Z.S. 



[Received March 3, 1898.] 

 (Plate XXVII. figs. 1-5 & 7-10.) 



Although a considerable number of Coleoptera of the remaining 

 families of the Serricorn series are here dealt with, it will be 

 admitted that they represent but a very small portion of what may 

 be expected when the larger islands of the West Indies have been 

 more thoroughly examined for these groups. Among the wood- 

 boring Beetles it is especially probable that further research will 

 bring to light many endemic forms, and the list of species in the 

 Lycidse and LampyridsB from Cuba renders it highly improbable 

 that the Telephoridae and Melyridse are so poorly represented as 

 the present collections would seem to indicate. 



The fauna is in general quite similar to that of Central America. 

 In the two islands from which the majority of the species collected 

 by Mr. H. H. Smith come, there is a small admixture of more 

 special South-American genera (Astylus, Anidrytus), but this is 

 quite parallel to what obtains in Panama and in Costa Eica. 



LTOID.S. 



Calopteroij-. 



Calopteron, Guerin, Voyage Coquille, p. 72 ; Gorh. Biol. C.-Am., 

 Col. iii. pt. 2, p. 8. 



CAiiOPTERON siiiTHi, sp. n. (Plate XXVII. fig. 2.) 



Nigrum, prothoracis lateribus elt/trisque Icefe awantiacis, his macula 

 magna dorsali communi marginem vix attingentem apiceque late 

 nigris, antennis vix serratis. Long. 6-10 millim. S $ • 



Hab. St. Vlncent (H, H. Smith). 



