.MOLU'SCA, L SMITH. ii'.i 



15. Mitl lit in i'n 1111111/11 (Hanley). 



.Si./i 111 Hit i-ii mi injil, llanlry, 1'roc-. /mil. Soc., Isi'il), p. 441; /W.. Tlirsaurus Conch., vol. Ill, 

 p. 1(>4, pi. 22i>, tig. .'! : Sovverbv in Reeve's Conch. Icon., vol. XVIII, fig. 3 (much 

 overcoloured). 



Station 42. of}' Rio de Janeiro : 40 fathoms. 



Described by Hanley from the Falkland lslands.it has not since been recorded 

 further north. One dead valve only in the present collection. 



I(i. Liinopsis /ii//eu'<n //>/.-, n. sp. J'l. II, li"'. 17. 



Shell oblique, produced posteriorly, rather solid, white, moderately convex, 

 concentrically striated with lines of growth crossed by verv fine close-set radiating 

 stria;: anterior outline prominently convex, posterior side oblique, almost st rai'jht, in 

 some young shells a little excurved : dorsal edge straight : area narrow ; central 

 ligament-pit triangular and subequilateral in each valve ; hinge-teeth about eighteen. 

 a few in the middle under the ligament-pit small or obsolete, seven or eight on the 

 posterior side arranged in a downward curve, those in front not so obliqnelv disposed : 

 interior of the valves very faintly and minutely radiately striated near the pallial line, 

 beyond which the margin is smooth and glossy; anterior adductor small, oval, close to 

 the end of the hinge-plate, posterior very much larger, and considerably remote from 

 the end of the row of teeth. 



Length, 19 mm. ; height, 17 : diameter, 9. 



Station 42, off Rio de Janeiro : 40 fathoms. 



Allied to L. pelagica, Smith,* from mid-Atlantic, but more solid, more finely 

 radiately striated, and having rather different hinge-teeth. 



L. Iceviuscula, Pelseneer,f has a curved posterior outline, and the hinder margin 

 of the valves is peculiarly thickened behind the adductor scar. 



17. Plicatula ri/nii>*ti. Lamarck. 



Plicatiilii riiiiinsii, Lamarck, Anim. sans Vert., vol. VI (1), p. 1S4 (1*111) ; Haiilcv, Recent 

 Biv. Shells, p. 288 ; Smith, " Challenger : ' Lamellibranchiata, p. 2SU. 



Station 42. off Rio de Janeiro : 40 fathoms. 



This West Indian shell occurs along all the coast of Brazil as far as Rio de 

 Janeiro, according to d'Orbigny,J who recorded it as Plicatula barbadensis, Petiver. a 

 non-binomial author, whose eonchological names are not admissible. 



18. l\'i-ti'n -i/'^in' (Linnaeus). 



Oftri'a ziczac, Liniwus, Syst. nat., oil. 12, p. 1144? 



I'i'i-ti'ii ::ii-::nc : Reeve, Conch. Icon., vol. VIII, pi. VI, tig. 2'J. 



Station 42. on" Rio de Janeiro : 40 fathoms. 



" "Challenger" Lamellibranchiata, p. ->!, pi. XVIII, figs. .">-3.\. 

 t Voy. " Bi-lgica," .Mollusca. (I'.Hi:;,. p. 2k pi. VII, tigs. HI. '.12. 

 : In Ramon <lr la Sagra's Hist. Cuba, Mollusques, vol. II, p. '.'>(>(). 



