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376 Clasis sV.
Ovaria parva, albida, juxta partem inferiorem
abdominis. KRenes longitudinaliter spinæ dorsi
impositi, sub qua Vesica aörea angusta, longa. Lien
irregularis, parvus, atro- rublcundos circa
medium intestini.
88. SILURUS (Mystus) Schilbe niloticus.
CapPur plagioplateum. Corpus cathetoplateum.
Dorsum angulum obtusum cum capite formans öc
ad pinnam dorsi valde ascendens. Vertex
planiusculus, sulcatus, inæqualis. Latera cap. pone
oculos protuberantia, convexa, carnosa. Apex
obtusissimus, semicircularis.
Rictus amplus, sursum spectans. Mavillæ æquales.
Lingua tota obtusa, cartilaginea, crassa; palato
adnata, glabra. Denticuli a) maxillam utramque
replent, densissimi, copiosissimi, minutissimi,
acutissimi, versus palatum reflexi, lineis fere
tribus l. quatuor dispositi, qui ob densitatem öc
copiam vix distingui possunt, b) Os
semicirculare in palato pone maxillæ denticulos, aliis
ejusdem figuræ repletum. CIRRHI in utraque
maxilla in universum VIII, videlicet 2 supra
nares, utrinque unus; 2 aliin gingivis, qui
reliquis sunt longiores baf conica; 4 in gula,
quorum 2 longiores ad ejus latera; reliquf breviores
oblique ante illos positi.
Operc. Branch. laminis 2 constat, quorum superior
musculo tecta, margine rotundata; inferior
parva, margine irregukuiter angulata, nuda.
Membrana Branchiost, nuda, radiis åostructa X, parum
arcuatis, succeditve brevioribus: superiore
latiusculo, longiore, introrsum incurvato.
ÅBranchiæ 4, saperficie arcuatæ; pectinatæ tuberculis
in
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