x 
18. ANATOMIA XIPHLE. 
arteriis adhuc ignotz funt. — Confer. ejus Stru&ure and Phg- 
fiology.of Fishes, tab, I. et IL. ——— à NN v 
& : $. 6. 
- ^ JBranthiae operculatz, quateraz, complicate, bifoliz, 
cribriformes, intus fcabrz et una [ingularis monophylla man- 
ca operculo adnata, — Arcus offeus quisque, in fuperficie in- 
terna convexus, in externg vero canaliculatus, düobus inz-. 
' qualibus brachiis fubrectis, cartilagine flexili curvato connatis, - 
conflat. Brachium inferius modice incurvatum, dimidio plus 
longius eft fuperiori, cujus extremum anterius compreffum 
offi linguz cartilaginea fynphyfi adhzret; extremunr vero po-. 
flerius ope cartilaginis cujusdam teretis et incurvati intermedii 
conjungitur cum brachio fuperiori. toc brachium fubfimile 
inferiori, fübrectum a latere interno. proceffum tenuem, hu- 
milem, longe extenfum et inferne hamatum, habet, et ex. 
tremo fuo fuperiori, parum recurvo, bafi cranii inhxret, In 
. limbo externo gemino uniuscujusque arcus infünt duo folia 
branchix lunata, cribrofa, rigida, fimilia fed inzqualia, aps 
preffa, fibris mufcalofi$ prope bafin inter fe combinata funt, 
quz tenui crufla tophacea obteguntur, —Conflant e multis la- 
mellis cartilagineis, fubulatis ad marginem e transverfo- den- 
,tatis, tenuibus, arctiffimis. fimplicibus et nonnullis dichoto-  - 
mis,- radiatim erectis; membrana molli rubra undique vefli- 
tis; Omnes lamellz limbo externo dentato tantum firmiter co- 
hzrent fic ut dentes transveríz uniuscujusque lamellz cum den- 
tibus vicinarum connati innumera foraminula rotunda et ob-- 
longa relinquant, unde fuperficies externa et interna foliorum, 
inflar cribri, perforata videantur, —Foraminula hiant in inter- 
flitia lienaia, angufla, quz inter lamellas exiftunt, — Bran- 
thia acce[foria operculi medio infita, parva, ovata, brevis, 
'"branchix primz verz oppofita, ejusdem fabrice ell, verum 
arcu offeo caret, 
S. 7. i 
Diaphragma tenue, tendineum, femipellucidum in re- 
gione clavicularum pectus a cavo abdominis feparat, — Ante- 
riori 
