88 Mr. J. C. Melvill on the 



one just above the suture of each whorl and another in the 

 centre of the lowest ; these zones are interrupted and only 

 appear between the ribs, the remainder of the surface being 

 painted with light brown scattered dots and flames, a series 

 of light spiral maculations just below the sutures being 

 specially prominent. The aperture is narrow, oblong, the 

 dark zone shows transversely across the interior. Outer lip 

 incrassate, sinus very obscure. Columella straiglit, stained 

 "with brown at the base. 



The three nearest species to tliis interesting MangiUa are, 

 perhaps, hella^ Reeve, interruiita^ Reeve, and theskela, Melv. 

 & Stand., all abundant at Lifu, the form being totally dif- 

 ferent, while in markings those of hella and iheskela seem to be 

 combined. Tryon, I may mention, unites the two former 

 of these species ; nothing could be more distinct in my 

 opinion. I consider, too, that M. thiasotes, Melv. & Stand., 

 from the Pacific Islands, comes under the same category, and 

 cannot, as suggested recently by Mr. C Hedley in the 

 " Mollusca of Funafuti " *, be a Daphnella. 



Clathurella O^Malet/i, sp. n. (PI. T. fig. 7.) 



C. testa attenuato-fuBiformi, delicata, nitida, caruea ; anfractibus 

 septem, quorum duo apicales pulchre et minutissime decussati et 

 alveola ti, cteteris ad suturas impressis, tumidulis, nitidis, longi- 

 tudiualiter costatis, costis paucis, apud ultimum septem, spiraliter 

 obscure liratis, liris ad juncturam costarum magis conspicuis ; 

 apertura oblonga ; labroexteriore brurmeo-tincto ; columellarecta ; 

 canali producto. 



Long. 10, lat. 3 mm. 



Hab. " On shell-growth on telegrapli-cable, 55 fathoms, in 

 mud ; lat. 25° 58' N., long. 57° 05' E." (Sea of Oman).— 

 F. W. T. 



A very delicate flesh-coloured shining Pleurotomid with 

 oblong mouth and produced canal, seven-whorled, including 

 two decussated apical whorls, much impressed at the sutures, 

 longitudinally few-ribbed, there are but seven on the last 

 wrhorl, and spirally obscurely lirate; the outer lip and base of 

 the canal are tinged with brown. 



I would place this species near C. Rohillardt^ Barclay, in 

 spite of the prolonged canal. In many ways this section of 

 the genus differs from typical Clathiircllw, but in the involved 

 and chaotic condition of the nomenclature any arrangement is 

 but tentative. 



A few examples only, named in honour of Mr. Julian 

 * Mem. Austral. Mas. iii. p. 476 (1899). 



