312 Messrs. J. C. Melvill and R. Standen on 
crassioribus, in ultimo et penultimo numerosis, ad quindecim, 
et angustioribus, brunneo tinctis, suffusis, et maculatis, trans- 
versim nodiliratis, ultimo anfractu dorsaliter juxta labrum 
varicoso, brunneo suffuso et zonato; apertura oblonga, angusta, 
intus alba, labro paullum effuso, sinu distincto, profundo, canali 
lato, brevi; columella recta. 
Long. 30, lat. 8 mm. 
Hab. Persian Gulf, off Bahrein Islands, 30-50 fathoms. 
Only one example secured of a distinct and handsome 
Drillia, the nearest approximation to which is to be found 
in D. latifasciata, Sowb., from Japan, considered by some 
authors as synonymous with D. japonica, Lischke. ‘There 
is no beading at the sutures, however, and the form is more 
graceful. 
Drillia continua, sp.n. (Pl. XXII. fig. 17.) 
D. testa attenuata, fusiformi, levissima, alba, nitida; anfractibus 
104, quorum 14 apicales subvitrei, nitidi, complanati, ceteris 
longitudinaliter paucicostatis, costis exacte inter se continuis, 
levibus, albis, infra medium delicate uniangulatis, anfractu 
ultimo apud basim paullum pyriformi, numero costarum ad octo ; 
apertura subobliqua, oblonga, intus alba, labro haud multum 
incrassato, sinu lato, sed non profundo. 
Long. 10, lat. 3°75 mm. 
Hab. Persian Gulf, Mussandam, 47 fathoms. 
Akin to D. opalus, Reeve, and conspicuous for its exactly 
continuous longitudinal ribs, those of whorl succeeding whorl 
descending im a perfectly straight line to the base. ‘These 
whorls are slightly once-angled beyond the centre. The whole 
surface is white, with a slight ochreous tinge, and smooth. 
Drillia granatella, sp.n. (Pl. XXII. fig. 18.) 
D. testa parva, lete punicea, solida, nitida, fusiformi; anfractibus 6, 
duobus apicalibus perlevibus, puniceis, hic illic albo suffusis, 
ceteris crassicostatis, costis paucis, levibus, nitidis, numero 
ultimum apud anfractum circa 7, superficie omnino leeyissima, 
dorsaliter juxta labrum gibberula ; apertura breviter ovata, labro 
tenui, albo-suffuso, sinu lato, canali brevissimo. 
Lorg. 5, lat. 1°50 mm. 
Hab. Persian Gulf, Gulf of Oman, Maskat, 15 fathoms. 
This little species, though so small, is in our opinion a 
Drillia rather than Mangilia, being nearly allied to the 
beautiful series of Drillie—viz.: disyecta, Smith, persica, 
Smith, and resplendens, Mely.—peculiar to the saime region, 
