REPORT ON THE GASTEROPODA. 179 



10. Nassa {Alectryon) glans (Linne), var. suturalis (Lamarck). 



Buccinum glans, Linne, Syst. Nat. (12th ed.), p. 1200, No. 456. 



Chemnitz, Conch. Cab., vol. iv. p. 60, pi. cxxv. figs. 1196-1200. 

 „ lineatum, Martyn, Univ. Conch., No. 34, pi. iii. fig. 84. 

 „ glans, Bruguiere, Encycl. method., vers., vol. i. p. 269, sp. 34, pi. cccc. fig. 5. 

 ,, suturale, Lamarck, Anim. s. vert., vol vii. p. 269, and (ed. Desh.) voL x. p. 166, sp. 21 



(sec. Nasses). 

 „ glans, Dillwyn, Cat, vol. ii. p. 601, sp. 37. 



„ Wood, Ind. Test., p. 113, pi. xxii. fig. 38. 

 „ suturale, Kiener, p. 55, sp. 54, pi. xxiv. fig. 96. 

 Nassa suturalis, Adams, Proc. Zool. Soc. Lond., 1851, p. 104, sp. 2. 



„ ,, Reeve, Conch. Icon., vol. viii. pi. i. fig. 4. 



Buccinum suturale, Kiister in Conch. Cab. (ed. Kiister), p. 20, sp. 23, pi. v. figs. 4, 5. 

 Nassa glans, Hanley, Ipsa Linn. Conch., pp. 248, 512. 



„ (Alectrion) intermedia, v. Frauenfeld, Moll. d. Novara, p. 5, pi. i. fig. 2. 



,, (Alectryon) suturalis, v. Martens, Moll. Mauritius, &c, p. 242. 



„ „ „ Tryon, Manual, vol. iv. p. 27, pi. viii. figs. 45-49, 52-54. 



April 17, 18, 1874. Port Jackson, Sydney. 2 to 10 fathoms. 



Habitat. — Philippines (Adams), Mauritius, Ceylon, Nicobars, Malay Peninsula (v. 

 Martens). 



This is the small var. suturalis, Lam., sp., which, after Kiener's judicious estimate (loc. cit.), it 

 is a pity to perpetuate as distinct. 



11. Nassa {Alectryon) psila, 1 Watson (PL XL fig. 4). 



Nassa psila, Watson, Prelim. Report, pt. 13, Journ. Linn. Soc. Lond., vol. xvi. p. 364. 



Station 185b. August 31, 1874. Lat. 11° 38' 15" S., long. 143° 59' 38" E. Off 

 Raine Island, Torres Strait. 155 fathoms. Coral sand. 



Shell. — Very thin, glassy, polished, white, with some brown stains ; conical, scarcely 

 oblique, with a high scalar spire, a small blunt apex, a short truncate base, a sharply 

 flanged canal, and a very small snout. Sculpture: Longitudinals — the earlier whorls 

 are crossed by numerous regular fine riblets parted by very similar furrows ; they are 

 straight, but incline a little oblkpuely to the left ; they hardly increase in size, but on the 

 last whorl and a half become obsolete ; the lines of growth are very fine. Spirals — below 

 the suture is a narrow horizontal shelf, whose sharp edge is ornamented with an expressed 

 row of blunt tubercles ; these are formed by a deepish furrow isolating the tops of the 

 ribs ; narrow shallow furrows stipple the interstices of the riblets ; these become faint on 

 the last whorl, but increase in strength and become more continuous as they approach 

 the outer lip; they also increase in strength towards the point of the base. Colour 



1 4"^o's, rubbed. 



