374 
E. DADAY DE DEÉS 
(fîg. 109, è), aut in parte superiore declivis, rectus, in parte 
inferiore majore regiilariter sat acutiusculoque arcuatus 
(fîg. 109, e), in marginem ventralem, plus minusve late leni- 
terque rotundatum sine limite visibili ineuns (fig. 109, h-c), 
Conchæ infra vel supra visæ sat auguste fusiformes, lati- 
tudine maxima plus minusve ante medium sita; apice ante- 
riore posteriore breviore latioreque, sat acuto ; marginibus 
late arcuatis (fig. 109, d. g). 
Yalvulæ concharum zonis incrément! 36-40, areolatis, 
areolis polygonalibus, politis (fig. 109, /), colore flavobrunneo. 
Caput a latere visum sat auguste triangulare ; angulo occi¬ 
pital! sat longe producto, angusto, acute terminato ; margine 
frontal! supraoculari in parte tertia superiore declivi, angu- 
lum late rotundatum formante, in parte majore inferiore 
recto, ante oculos composites tuberculum latiusculum for¬ 
mante ; margine front ali infraoculari declivi, subrecto ( fig. 110a). 
Rostrum angustum, acutiusculum, acuminatum, mar¬ 
gine ventral! leniter sinuato. Fornices usque ad apicem rostri 
vergentes, ante marginem frontalem minime prominentes, 
hincque parum late arcuatæ (fig. 110, a). 
Antennæ inferiores superioresque, sicut macula oculi 
simplicis structura formaque maris similibus. 
Truncus e segmentis 28 pedigeris compositus. Segmenta 
18 posteriora trunci aculeis perparvis, dorsolateralibus, 
numéro variabili, in sérié antrorsum sequente 11.11.11.13.13. 
16.16.16.17.17.16.16.11.11.7.7.3.1, uno mediali ceteris late- 
ralibus parum validiore (fîg. 111, e). 
Pedes omnes, exceptis aliquot ultimis in margine epipoditi 
branchialis processibus cylindricis,- digitiformibus, • longis, 
interdum bi-vel trifurcatis (fig. 111, b), in apice seta armatis 
vestiti (fîg. 111, a-c), Pedes primi paris palpo endopoditali 
cylindrico, longitudinem exopoditi non attingente ; cornu 
superiore epipoditi branchialis dilatato, lobiformi (fîg. 111, a). 
Pedes 10-11-paris palpo endopoditali fusiformi, longitu¬ 
dinem dimidiam exopoditi sat multo non attingente ; cornu 
superiore epipoditi branchialis cylindrico, ad sustendum ovo- 
rum idoneo ; sacculo branchial! elongato, angusto armati 
(fig. Il, c). 
— 450 — 
