298 ANIMAL REPRODUCTIONS, 
¢ Befides thefe are others which, although 
* fmall, and refembling filaments, are very ele- 
‘gant, and deferve to be diftinguifhed. Thefe, 
‘ which I fhall name frena, are feen in the upper 
* and under part of the oval globe. The upper 
‘ pridles are fimple, Fig. 1. c. but the under 
‘triple. The former are on the fides of the 
* globe, in the vicinity of the falival ducts, and 
‘ terminate in the upper lip. The under frena 
‘ are divifible into large, fmaller, and fmalleft, or 
‘long, fhorter, and fhorteft. The long, Fig. 2. 
‘ €e, originate under the ovular globe, where the 
¢‘ mufcular retractor is inferted, and terminate 
‘ within the fmall horns. The fhort begin a little 
* before the long, about the middle of the globe: 
‘ thence diverging and joining the long, they ad. 
‘ vance to terminate in the right fide of the fame 
* horns, Fig. 2. f. The fmalleft and fhorteft ori- 
* ginate before the fhort, and terminate in a 
‘right line in the cutaneous mufcle of the un- 
. der jaw, Fig. 2. g. The contraétion of thefe 
* bridles draws back the lips, and brings for- 
“ward the globe; which aéction is fo important, 
¢ that it would be difficult to explain how, with. 
* out the bridles, the mandibles could be brought 
* fo much forward as to be on a level with the 
* lips, which is particularly evident when the 
* {nail feeds, and efpecially when caleavouaee to 
hn a bit unfuitably hard. 
* After 
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