314 Messrs. J. C. Melvill and R. Standen on 
medium angulatis, longitudinaliter paucicostatis, spiraliter undique 
rudiliratis, interstitiis albis, labro dorsaliter multum incrassato, 
angulari; apertura sinuoso-oblonga, sinu perlato, margine columel- 
lari tristriato, canali lato, brevi. 
Long. 8, lat. 8 mm. 
flab. Persian Gulf, Mussandam, 47 fathoms. 
Most resembling JZ. spurca, Hinds, found abundantly in 
the same region, but differing in colour (the new form being 
entirely white), in size (8 as against 14 or 15 mm.), and in 
greater angularity of whorl. The somewhat sinuous or 
trigonous aperture and very thickened peristome are the 
same in both species. Only one or two examples have yet 
occurred. 
Clathurella opstmathes *, sp.n. (Pl. XXII. fig. 19.) 
C. testa oblongo-fusiformi, solidula, nitida, cinerea, albo et fusco 
zonata; anfractibus 10, quorum 3 apicales, ceteris circa suturas 
levibus, planatis, aliter undique longitudinaliter crassicostatis, 
costis paucis (numero ultimum apud anfractum 10), spiraliter 
pulchre superne 3-, ultimo J.0-liratis (ad peripheriam albizonato), 
liris albo-cinereis, conspicuis, supra costas angulosis; apertura 
oblonga, labro incrassato, echinulato, fusco et albo depicto, sinu 
lato, haud profundo; columella recta, canali lato, breyi. 
Long. 16°50, lat. 6 mm. 
Hab. Persian Gulf, Sheikh Shuaib Island, 15 fathoms. 
Hitherto confounded with C. (Glyphostoma) rugosa, Migh., 
a quite different species. It is a prettily sculptured and 
painted shell, with conspicuous beading and spiral well-cut 
lire. 
Clathurella Sykesit, sp.n. (PI. XXIII. fig. 4.) 
C. testa parva, perangusta, attenuato-fusiformi, albo-cinerea; an- 
fractibus 8-9, quorum apicales duo leves, ceteris ad suturas 
permultum impressis, angulosis, ventricosis, longitudinaliter 
acuticostulatis, costis paucis, numero ultimum apud anfractum 
circa 9, undique spiraliter liratis, liris rudibus (in penultimo 
et ultimo cirea 6), prominulis; apertura ovata, labro tenui, sinu 
couspicuo, profundo, canali longo. 
Long. 7, lat. 2 mm. 
Hab. Gulf of Oman, lat. 24° 58’ N., long. 56° 54/ E., 
156 fathoms. 
We are indebted to Mr. Ernest R. Sykes for calling our 
attention to this curious little species, so like a Fusus in 
* dWiuabns, late in being discerned. 
