CINEREOUS GUAPERVA. 
The famous Artedi, who gives them the 
name of Baiistes, enumerates four species only 
• — 1. Baiistes Aculeis Dorsi Tribus, Cauda Bi- 
forca ; 2. Baiistes Aculeis Dorsi Duobus, Cauda 
Quadrata; 3. Baiistes Lineis Striatis, Cauda 
Bifurca ; and, 4. Baiistes Aculeis Quinque in 
litroque Latere. 
The first of these is described by Marc grave, 
and by Johnston, under the name of the Gua- 
perva ; the second is the Guaperva Longa, of 
Lister, Willughby, and Ray ; the third is de-- 
Bominated, by the same naturalists, Guaperva 
Lata ad Caudam Striata; and the fourth is their 
Guaperva Hystrix. 
Lister, Willughby, and Ray, mention another 
Guaperva, the Baiistes Cauda Bifurca Pinna 
Dorsi Maculosa of Linnssos, which they call 
Guaperva Lata, Cauda Forcepata, Pinna Dor- 
sali, Maculis quibusdam distindla : and Ray also 
describes the Guaperva Maxima Lata; which, 
he says, he has seen two fcec long. 
In neither of these, however, nor among 
some others which ni?gbt be mentioned, do we 
recognise 
