4° 



SMITH : MARINE SHELLS FROM PORT ALFRED. 



Maeoma litopalis, Krauss. 



This is the Tellina (Maeoma) calcarea of Sowerby's Marine Shells, S. Afr., 

 p. 57, and is separable from that northern species by its rather more equi- 

 lateral form and by the pallial line which generally extends across the valves, 

 reaching practically from scar to scar. The shell is sometimes white and 

 sometimes reddish, and attains larger dimensions than the specimen described 

 by Krauss. The largest example examined is 35 millim. in length. 



Lucina despeeta, n. sp. 



Lurina rolumliella, Sowerby (non Lamarck): Marine Shells S.Africa, 

 p. 61. 

 Testa L. cohimhellai' paulo similis, sed tenuior, liris concentricis magis con- 

 fertis, lunula infra umijones baud excavata, sulco obliquo postico minus 

 profundo, umbonibus laevil)us, baud concentrice liratis, marginibus valvarum 

 intus laevibus, baud denticulatis. 



Longit. 23 millim, diam. 16, alt. 24 



i/aA.— Port Elizabeth (Sowerby) ; Port Alfred (Turton). 



Some specimens are white beneath the thin pale deciduous periostracum, 

 others are rose tinted externally and of a deeper shade within. The hinge 

 is more delicate than in L. volumhella, especially the lateral teeth. It is 

 remarkable that so distinct a shell should have been confused with that 

 species. 



Lueina valida, n.sp. 



PI. iii, fig 19. 



Testa parva, solida ab'a. subpiriformis, inaeqnilateralis, confertim concen- 

 trice lirata et radiatim striata, um' ones prominentes, acuminati, incurvati ; 

 valvae crassae, sulcis 2 — 3 remotis concentricis sculptae intns ad marginem 

 ventralem minute crenulatae. 



Longit. 7 millim., alt. 7, diam. 4. 



Belonging to the same group as L. yecicn^ Lamk., but smaller, and more 

 solid. The two or three grooves at intervals are peculiar, and apparently 

 indicate periods of arrested growth. The radiating striae cut across the 

 concent vie lirae and give them a somewhat granose appearance. 'I'he lirae are 

 closely packed, being merely separated from one another by striae-like 

 grooves. 



Lopipes clausus, Philippi. 



Lucina dau^a, Philippi : Abbild., vol. iii, p. loi, pi. ii, fig. 2. 



Lorijies lacteus, Linn : Sowerby, Marine Shells S. Africa, p. 61. 



This South African shell is quite distinct from the European L. lacfeu", 

 being rather flatter, much larger, having a deeply excavated lunule, and differ- 

 ing in other respects as pointed out by PhilHppi 



