96 



Elizabeth^ &c. The figure of the animal represents the specimen 

 as received in formalin; the length and slinj.ness of the double 

 tail-like appendage at the posterior extremity of the foot being 

 remarkable^ and very different from other species of the genus 

 that have been figured. 



Melapium lineatum, Lamarck (Pyrula)=iBuccinum biilbiis, 

 Wood, Index Test. Supp- p. 12, pi. iv- fig. S=Melapium bidbns, 

 Auct. Dredged ai Aioascl liay, 11-19 J-^^'^- iiotioin, hard, wiui 

 clean grey sand. 



Mr. Edgar A. Smith, in his interesting paper on the genus 

 Melapium (Ann. and Mag- of Nat. Hist., March, 1889, p. 267;, has 

 pointed out that that figured as Fyriila lineaia by Kiener, followed 

 by Reeve and others, is not Lamarck's species, but a much larger 

 shell of very different character, which had been described by 

 Schubert and Wagner as Melapium datum. The true M. lineatuni 

 being identical with the small, compact, finely lined shell called 

 by V'vood Buccinum bulbus. Mr. Smith places the genus between 

 Rapana and Coralliophila, though it differs from those genera in 

 having no operculum- He thus describes the animal: — 



Foot oval, rather high, not truncate or bimarginate in front, in 

 length about one and a half times the width, pale beneath, 

 bordered all round above the margin with two bright red lines 

 about 2 millim. apart. Head small, compressed- Tentacles 5 or 

 6 millim. long, acutely tapering. Eyes minute at outer base of 

 the tentacles, on slight prominences. Penis compressed 10 to J2 

 milHm. in length, obtuse at the end- Siphon shortish, mode- 

 rately acuminate- Branchiae in two plumes, the right large, the 

 left small. Odontophore most resembling that of Rapana bnlbosa, 

 consisting of a tricuspid central tooth and a single acute curved 

 lateral. The central tooth is transversely elongate, and the cusps 

 are nearly equal in size — short, acute, and approximated. 



Latirus imbricatus, n. sp. (Plate H. fig. i)- Shell fusiform, 

 lightish l3rown, covered with a darker brown periostracum, which 

 consists of scaly, waved lamina. Spire rather long, acute ; 

 whorls y^, the first (apical) smooth, papillary, the rest slightly 

 angular in the middle, scarcely concave above, and armed with 

 stout, somewhat distant, tubercles at the angle, everywhere 

 closely spirally ridged; suture narrowly channelled, irregular. 

 Last whorl armed with two rows of obtuse nodules, rather square 

 in the middle, and terminating in a broadish rostrum- Aperture 

 oblong, interior smooth, stained with purple ; columella rather 

 straight, smooth, without plaits; canal broad and open. The 

 outer lip in the type is thin and simple, but the specimen is evi- 

 dently not fully developed. 



Length, 44; width, 20 millim. 



Hab. .• — 1 ugela Kiver mouth N. by W., distant J 8 niile'^. Depth, 

 46 fms. Boltom, mud. 



