SOUTH AFRICAN MARINE MOLLUSKS. 15 



CLIONELLA CONFUSA Smith. 



This species is wonderfully variable in coloration; 10 specimens 

 before me, Cat. No. 252108, U.S.N.M., selected from a lot of 76 speci- 

 mens, (Coll. No. 1607), from Port Alfred, show the following varia- 

 tions in color. Some have the base white, the tip rose colored, and 

 the intermediate portion brown; the latter may be unicolor, spotted 

 or marbled with brown. Others are rose colored throughout, with 

 mottlings and spottings of brown; some of them even have the 

 narrow white zone at the summit, characterizing C. rosaria. Still 

 others are pale lavender with rose colored tips; these again may be 

 variously mottled. Some of them are uniformly rose colored without 

 any additional mottlings, while others are pale yellow. Some have 

 a narrow dark zone at the summit and another dark band on the base. 



I have seen two additional lots from Port Alfred, 3, Cat. No. 

 186669, U.S.N.M. (Coll. No. 24), and Cat. No. 227756, U.S.N.M., six 

 specimens (Coll. No. 851). Cat. No. 90681, U.S.N .M., one from the 

 Cape of Good Hope. Cat, No. 979175, U.S.N.M., contains two from 

 the same locality. Cat. No. 187*97, U.S.N.M., contains a specimen 

 from Port Elizabeth. 



CLIONELLA ROSARIA Reeve. 



Cat. No. 186669a, U.S.N.M., one specimen from Port Alfred (Coll. 

 No. 24). Cat. No. 227757, U.S.N.M., four specimens from the same 

 locality (Coll. No. 852). Cat. No. 252109, U.S.N.M., 10 specimens 

 from the same place (Coll. No. 1608). In addition to these, I have 

 seen 70 specimens which have been returned to the collector, bearing 

 the same collector's number as the last. 



CLIONELLA SYBARITICA, new spec'es. 



Plate 7, fig. 8. 



Shell elongate-conic. Nuclear whorls decollated. Post-nuclear 

 whorls moderately rounded, constricted at the sinus, which causes 

 the summit of the turns to appear as a cord. The space between the 

 sutures is variously mottled with flesh color and chestnut spots and 

 streaks. The base, beginning at the periphery, is rose colored, a little 

 paler on the columella than the rest. The whorls are marked with 

 strong, protractive, axial ribs, which are about as wide as the spaces 

 that separate them; of these, 14 occur upon the first to sixth whorl, 

 while on the last whorl the number increases to about 20. These ribs 

 are interrupted at the sinus a little distance below the summit, and 

 become decidedly enfeebled on the base, vanishing before they reach 

 the columella. In addition to the axial ribs the surface is marked by 

 numerous strong lines of growth. The spiral sculpture consists of 

 equal and equally spaced spiral striations, which are about as broad 

 as the spaces that separate them; these are best expressed in the 



