4d Marine Investigations in South Africa. Vol. V. 



Berthella gkanulata (Krauss) ? 



Pleurobranclius granulattis, Krauss. Die Stldafric. Moll., 1848, 



p. 61. 

 ? Berthella gramilata, Vayss. I.e., 1898, pp. 268-271, pi. 15, 



figs. 11-16. 



Pi. IV., figs. 27, 28; PL V., figs. 1-4. 



Two specimens were procured, October 23, 1897, at Somerset 

 West (False Bay). They were very much hardened. 



They were similar in appearance, were 2-5-3 cm. long. The 

 largest was 1*2 mm. broad, 1-4 mm. high; the breadth of the frontal 

 veil was 10 mm., the length of the flattened gill 13 mm. by a breadth 

 of 5, the breadth of the foot 15 mm. The animals w^ere of one 

 colour, yellowish gray. 



The form about the same as that of B. plumtda; on the mantle, 

 which was quite smooth, a very tine white punctuation. The genital 

 papilla without stronger folds. The shell was not visible externally. 



The shell placed anteriorly and a little to the right, ^-o mm. long, 

 by a breadth in front of 3, very flattened, hard, yellow, with an 

 anterior cuticular brim, the spire very small (fig. 27), white. 



The bulbus pharyngeus whitish, of usual form, 7 mm. long by 

 a breadth of 4 and a height of 3 mm. The mandibular plates yellow, 

 thin ; their elements (fig. 28, 1, 2) of a length of 0-16 and a height 

 of 0'08 ; the hook is very pointed, without denticles (sometimes the 

 point was split in 2 to 3 short needles), the lateral knots only 

 slightly prominent, the inferior margin forming an angle. The 

 yellow rasp of the tongue contained about 40 series of plates, in 

 the sheath were about 43, the total number of rows therefore being 

 83 ; about 130 plates in the rows. The plates yellow at the base, 

 otherwise nearly colourless, reaching a height of 0-25 mm., their 

 form and relations (figs. 3, 4) being otherwise nearly as in the 

 B. phmnula. 



Another specimen was procured at Kalk Bay, January 5, 1904. 

 It had a length of 24 mm., the fine gill 11 mm. long ; no trace of 

 white punctuation of the mantle. — The shell 5 mm. long by a breadth 

 of 2, rather hard, reddish yellow, the small spire white. 



The bulbus -pharyngeus 5 mm. long by a breadth of 4 and a height 

 of 3 ; the mandibles (as well as the rasp) brownish yellow. In the 

 rasp of the tongue about 38, in the sheath about 33 series of plates. 

 The plates as usual. — The penis as usual. 



Vayssiere seems to have examined the original specimens of 



