Of OXFO%T).SHIXE. 183 
Nor (liall I venture to dcfcribe above one of thefe neither (and 
that only as 2ifpecmen of what I intend of the rf/?, as faft as I can 
compafsthe 7;7(?//)0^of their produdlions) which I think I may 
call Mufca c Fhryganio faxatili^ there being a ^ione^ as well as a 
P'lcK, Caddis^ or Cad-wcrm ; in the generation of which, Nature 
fcems to obferve the following Firfb, there appears on 
the Jlone to which many of them ftick, as in Tab. 10. Fig. 4. 
only little bubbles of a glutinous nature, like the /}>awn of frogs^ 
which by the defcent of gravel ^nd /and that Jiick, to them^ are 
formed into fione Cadd's houfes, including the Animal therefore 
called the fione Caddi6 : which after it has continued in its rou^h- 
cafi fionehou^e its due time, gets off the either to the bank 
of the RiveVy or climes up fome reed^ where alfo leaving its 
houfe^ it becomes a flye^ fomwhat like in (liape to the Mujc^^ 
M^tfi'^^i, ox bipiles Moufeti^ ^ that come of the Jiick. Caddis^ only 
it is iliorter, and wants both the Antenndt and forked brifily tail ; 
butmoft of all like the Breife^ only the Briefe is all ^r^j/, and this 
has a black, head and dark^brov^n wings. See its form, Tab. i o. 
26. Orher water Flys there are that come of fuch worms^ cal- 
led Cocks ffurs^ Rough-coats^ Fipers^is-c. of which no more at pre- 
fent till further obfervation ; but that though at laft they come 
to be flyinglnfe^s^ yet at tirft they are all of them water Animals ^ 
which puts me in mind of proceeding next, 
27. To the Fifijes^ whereof we have a fort in the River ///x, 
that we call here a Pride., of the long cartilagineous fmooth kind, 
concerning which Authors feem fo obfcure, that I know not whe- 
ther it be defcribed at all ; or if it be, it is done fo imperfcdly, 
that perhaps it may be acceptable if I contrive another. The Fifh 
the moft like it of any I can find, is the Lampetra parva fluviati- 
li5 of Rondeletiu6^., rendred by Dr. Charlton'^ and Dr. Merret^-y 
the Stone-grig: it having a mouth cut neither perpendicularly 
downward, nor tranfverfly, but hollowed as it were between 
two cheeks, without an under jaw, after the manner of Leeches ; 
on the top of its head it has cw^, and on each fide /even holes 
that fupply the place of gills ; and under the belly a fmall line^ 
reaching from the mouth to the exit of its excrement ; it moves 
^ Idem. M^. II. c T>e?'ifdbiiifluviaul.cap. 24. ^ OmmaB. Zoicou.tit.FifceSiCap. Lisvium. = P'max 
rer- Nat. Brit an- 188. 
by 
