ONISCUS PRJiGUSTATOR. 5i 



them their heads. Moft of the marine onifci appear to 

 be troublefome to feme one or other filh. The onifcus 

 ceti is well known as the plague of whales, and many of 

 the reft are mentioned in Linn33Us and Gmelin, as peftcs 

 pifcium. 



BENJN HENRY LATROBE, F. A. P. S. 



P. S. A gentleman well (killed in entomology informs 

 me that he believes, that in Block's Hiftory of Fiflies, a 

 work not to be had in Philadelphia, this onifcus is mention- 

 ed. But, from a late examination of Gmelin and Fabricius, 

 1 am convinced that the onifcus praeguftator is a fpecies 

 not hitherto accurately defcribed — Gmelin had probably 

 leen the Linnitan infeft, having changed the anten- 

 nx utrinque duo, to antennis quaternis, and left out 

 moft ot the long defcription given by Linn3?4iis. Neither 

 he, Linnseus nor Fabricius mention the circumftance of 

 habitation in the mouth of the fifti, and the induftrioua 

 and copious Fabricius, who having changed the names of 

 the genera, calls him cymothoa phyfodes, copies the 

 defcription of Gmelin, excepting the mention of the 4 

 antenna?, which in his arrangement form a charadler of 

 the genus. 



\'0L. V. L No. 



