4 Dr. J. C. Melvill on Marine Mollusca 



fenestrate, ultimo bicarinato, infra suturas radiatim oblique 

 deeorato, carinis marginatis, apud basin spiraliter quinque-lirato, 

 liris circa umbilicum fenestratis longitudinaliter incrassatulis ; 

 apertura rotunda, intus pulchre iridescente, peristomate tenui. 

 Long. 5, lat. 8 mm. 



Hab. Persian Gulf. 



A unique and most beautiful species. From the figure 

 and description, eo near does it appear to Monilea tropicalis, 

 Hedley *, from Mast Head Reef, Queensland, that I place it 

 in the same genus ; otherwise I had considered it, perhaps, an 

 Eumargarita, P. Fischer. Some authors, doubtless, would 

 include it in Solariella, S. Wood, but this last is but sub- 

 generic to Monilea, in my opinion. 



Epitonium schepmani, sp. n. (PI. I. fig. 6.) 



E. testa late ovata, delicata, alba, vel albo-cinerea, imperforata ; 

 anfractibus 9, quorum apicales tres bicolores, nitidissimi, per- 

 lseves, ceteris ventricosis, apud suturas impressis, longitudinaliter 

 undique lamellosis, lamellis bic illic varicosis, tenuibus, lsevibus, 

 fragilibus, anfractibus supernis arctissime lamellatis, anfractu 

 ultimo bi- vel trivaricoso, lamellis ad 36, interstitiis inter lamellas 

 spiraliter delicato-striatis ; apertura rotunda, peristomate con- 

 tinuo, margine columellari incrassato. 



Long. 9, lat. 4-50 mm. 



Hab. Sheikh-Shuaib I., Persian Gulf. 



Distinguished by its thin, shining, smooth lamellae, which 

 are so crowded in the two or three whorls just below the nuclear 

 as almost to impinge upon each other. They number thirty- 

 six upon the body-whorl, of these two or three are variced. 

 It does not seem very akin to any of the Scalaria? known 

 from the Persian Gulf region. 1 have much pleasure in 

 dedicating this interesting species to Dr. M. M. Schepman, 

 whose monograph on the Gastropodous Mollusca of the 

 ' Siboga ' expedition is memorable. 



Epitonium zatrephes, sp. n. (PI. I. fig. 5.) 



E. testa oblonga, imperforata, delicata, albida ; anfractibus 9, quorum 

 tres apicales lseves, nitidi, caeteris ventricosis, apud suturas im- 

 pressis, lamellis tenuibus ornatis, numero anfractum ad ultimum 

 circa 20, anfractibus supernis arctissime lamellatis, interstitiis 

 inter lamellas pulchre et arete striatis ; apertura fere rotunda, 

 peristomate continuo, columella paullum excavata. 



Long. 9, lat. 4 mm. 



Hab. Mekran Coast; off Charbar. 

 * Proc. Linn. Soc. N.S.W. 1907, vol, xxxii, p. 490, pi, xvi. fig. 12. 



