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350 Clasis IV.
Orpercula branchiarum squamis tecta. Lamina
superior inferiore paulo latior, circumferentia
semicirculari, versus gulam satis gibbosa, margine
integra. Inferior semicircularis, versus dorsum
latior gibbo minimo exstante; versus gulam an-
gustior, margine levissime crenata.
Membrana branchiostega ossicula 7 distinctissima
continet, quorum t1, 2 arcuata longiora, reliqua
fere recta, ordine breviora usque ad extimum, quod
brevissimum. Branchiarum apertura amplissima.
Branchiæ utrinque 4: prima tuberculor. habet
lineam unam, quæ pectinata; reliquæ tuberculor.
habet lineam unam, quæ vix conspicua & fere
solum ad sensum scabri.
Pinne DoRSI 2, sibi admodum vicinæ. P. dorsi
1:ma capiti quam caudæ multo propior, ossic.
VII, quæ omnia apice indivisa, flexilia, basi
latiora divisibilia: 1. brevissimum, 2 longius, 4
seq. longiora æqualia, ultimum brevius. Pinna
complicata humilis åt vix conspicua.
Ossiculum longitudinale ad basin pinnæ dorso asfixum,
quod pinnam depressam repræsentat. P. DOR-
SALLS secunda in medio dorsi incipiens & fere
ad caudam extensa, anterius longa, postice
humilior. ossic. XXVI. quorum 1. seq. brevius,
apice indivisum, rigidum, 2. 3. 4. longiora re-
liquis; 2:dum apice indivisum, flexile,
nodosum; 5-tti successive breviora; reliqua usque
ad finem brevissima, præter ultimnm quod
paulo longius & ex 2:bus compositum apparet;
omnia apice sunt ramosa.
Pinne PECTORALES proxime sub operc. br. in
medio latere, ossic. XVI. quorum 1. simplex;
2:do dimidio brevius eique adnatum, 2. tertio
pau-
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