from the Persian Gulf, &C. 3 



CycJostrema [Tubiola) nugatorium, sp. a. (PI. I. fig. 2.) 



C. testa depressa, profunde umbilicata, tenuissima, lactea ; anfracti- 

 bus 4, quorum apicales 2 apice ipso bulboso, vitreo, caeteris ad 

 suturas obtuse eanaliculatis, laevissimis, liueis incrementalibus 

 sub lente longitudinaliter tenuissimis praeditis, apud peripberiam 

 rotuude depressa. basi lsevi ; apertura rotunda, peristomate tenui, 

 fere coutinuo. 



Alt. "50, long. 1-75 mm. 



Hab. Mekran Coast, Charbar, 40 fathoms. 



Minute, but interesting. The little shell is milky white, 

 smooth, and delicate, the incremental lines of growth being 

 but barely distinguishable with a considerable power. The 

 umbilicus is particularly wide and deep, and the shell itself 

 almost a replica, but in miniature, of Tubiola nivea, Ch., 

 from Japan. 



Solar itlla iridifulgens, sp. n. (PI. I. fig. 3.) 



S. testa eonica, umbilicata, laevissima, pulchre iridescente, tenuis- 

 sima, perfragili, nitida, albo-cinerea, flammis rufis depicta ; an- 

 fractibus 5, quorum apicales 2 albi, stramineo — vel puniceo- 

 tincti, spiraliter tenuilirati, caeteris tribus infra suturas deplanatis, 

 perlaevibus, ventricosulis, ultimo rapide accrescente, ad peri- 

 pheriam rotundato, circa umbilicum spiraliter tomato et striatulo, 

 umbilico ipso profuudo ; apertura rotunda, labro tenui, columella 

 simplice. 



Alt. 4, diam. 6 mm. 



Bob. Mekran Coast ; off Charbar, at 40 fathoms ; off 

 Astola Island, 90 fathoms; Gulf of Oman, hit. 24° 58' N., 

 long. 56° 54' K, 156 fathoms, shell-sand. 



A very fragile shell, brilliantly nacreous, green, violet, and 

 blue iris hues mostly occurring, often collected in battered 

 condition, the somewhat fugitive outer cuticle, showing 

 rufous flames depicted upon a greyish ground, soon wearing 

 away. The finest examples occurred off Charbar ; it was both 

 rare and in poor condition, and small, in the famous Gulf of 

 Oman dredging at 156 fathoms. 



Monilea chiliarches *, sp. n. (PI. I. fig. 4.) 



M. testa anguste umbilicata, turbinata, pallide albo-straminea, intus 

 fulgide margaritacea, delicata ; anfractibus 5, quorum apicalis 

 vitreus, bulbosus, cseteris pulchre gradatis et tornatis, tribus 

 supernis (prsecipue penultimo) intra suturas radiatim sculptu- 

 ratis, duabus carinis marginatis praeditis, in medio, simul ac infra 

 et supra, penultimo aufractu longitudinaliter oblique et arctissime 



* x'^ l «PX^ s ; ruler of a thousand, 



1* 



