new Gastropoda from the Persian Gulf, &e. 293 
omnibus, preter ultimum, depressis, undique concentrice tenui- 
liratis, ultimo recto, tribus carinis acutissimis preedito, prominulis, 
quorum superiore carina extra labrum projecta porrectionem 
trialatam prebente; apertura rotunda, labro extus tricarinato, 
intus simplici. 
Alt. 2, diam. 3°50 mm. 
Hab. Gulf of Qman, lat. 24° 58’ N., long. 56° 54’ E., 
156 fathoms. 
A wonderful little form, which seems from the description 
to come nearest to C. Verreauxii, Fisch., from California. 
It is a discoidally depressed, deeply umbilicate species, the 
last whorl furnished with three very prominently ridged keels, 
acutely projecting, and terminating in a triangularly winged 
extension of the upper part of the outer lip. Several 
examples, but by no means so abundant as C. quadrt- 
carinatum, M. & S., which was in thousands at the above 
locality. 
Liotia romalea*, sp.n. (Pl. XX. fig. 8.) 
Z. testa ovato-rotunda, parva, solida, anguste umbilicata; anfracti- 
bus 5, ad suturas excavatis, quorum duo apicales leves, margari- 
tacei, ceteris, antepenultimo uni-, penultimo bi-, ultimo tricarinato, 
undique longitudinaliter arcte costatis, costis crassis, interstitiis 
striis longitudinalibus arcte preeditis, basim versus, circa umbili- 
cum, costis magnopere tumescentibus, spatio interstitiali spiraliter 
profunde fenestrato; umbilico profundo, perspectivo; apertura 
rotunda, intus albescente; peristomate albo, multum incrassato, 
obscure quinquangulari, continuo. 
Alt. 5, diam. 5 mm. 
Hab. Persian Gulf, Sheikh Shuaib Island, 10 fathoms ; 
Maskat, 10-15 fathoms ; also Gulf of Oman, lat. 23° 30’ N., 
long. 57° 10' H., at 10 fathoms. 
Several examples of a typical Lzotea, coarser and smaller 
than L. echinacantha, but beautifully sculptured and with 
conspicuously thickened peristome, which is seen with the 
aid of a lens to be very obscurely five-angled. 
Inotia echinacantha, sp.n. (Pl. XX. fig. 9.) 
L. testa globosa, anguste sed profunde umbilicata, pallide straminea, 
robusta ; anfractibus quatuor, quorum apicalis depressus, plana- 
tus, ceteris pulcherrime et arctissime sculpturatis, antepenultimo 
duobus, penultimo tribus, ultimo sex squamarum ordinibus pree- 
dito, squamis echinatis, spinarum instar, cavis, anfractu ultimo 
* pwpaheos, robust. 
