316 A7inals of the South African Museum. 



Affinities. — The height of the spire varies in different examples of 

 this species, and the margin of the shell is more rounded in old than 

 in young specimens. The greatest difference in appearance is due 

 to the state of preservation of the ornamentation. In some cases 

 the outer layer has been removed from a part or almost the whole of 

 the shell, leaving a nearly smooth surface. An example of this kind 

 was described and figured by Griesbach as a distinct species — 

 S. Wieheli — but, although stated by that author to be "perfectly 

 smooth," an examination of the type specimen shows that the 

 characteristic ornamentation is preserved near the apex and also on 

 the base of the shell. Griesbach also mentions as a point of dis- 

 tinction that "each whorl is double the width of the preceding one." 

 A comparison of Griesbach 's type with specimens of S. Bailyi shows 

 that this distinction does not hold good. 



Solammi, sp. ind., from Umkwelane Hill, is stated by Etheridge " 

 to "possess the general facies of Solarium pulchellum, Baily." 



Bemarks. — Pour species of Solarium are described by Stoliczka 

 from Southern India, but they are all clearly distinct from S. Bailyi. 

 The name pulchelhis had been previously used by d'Orbigny for 

 another species, consequently Gabb substituted the name Bailyi for 

 the Pondoland form. The type of S. pulchellus, Baily, is in the 

 Museum of the Geological Society. The type of >S'. Wieheli, Gries- 

 bach, is in the Hamburg Museum. In Griesbach's figure the width 

 of the last whorl is relatively too great. The characteristics of the 

 ornamentation on the upper surface of the shell are well shown 

 in Baily's figure. Sixteen specimens of this species have been 

 examined. 



Family NATICID^. 



Genus NATICA, ScopoH. 



Sub-genus LUNATIA, Gray. 



Natica (Lunatia) multistriata, Baily. 



Plate XXXVIII., figs. 6-8. 



1855. Natica multistriata, Baily, Q.J.G.S., xi., p. 460, pi. xii., fig. 8. 



Description. — Shell thick, of moderate size, higher than broad. 

 Spire somewhat elevated, formed of four moderately convex whorls. 

 Last whorl of moderate size, rounded. Sutures deep. A narrow 

 part of the whorls in front of the sutures is flattened or depressed. 



* Second Hep. Geol. Survey Natal and Zululand (1904), p. 88, pi. ii., figs. 35-37, 



