74 Transactions of the South African Philosophical Society. 



the small spermatocysta also pear-shaped, of a length of 2-5-3 mm., 

 in both individuals lying quite free at the neck of the spermato- 

 theca. From the prostata issues the sperm duct, whose prostatic 

 part forms a little bundle of windings and then passes into the 

 strong muscular part ; this last has a length of 2-75-3 cm., and was 

 continued as the somewhat thicker penis of a length of 2-25-3 mm. 

 The glans was in the two individuals quite everted (fig. 20), in one 

 drawn back in the sheath (prseputium) (fig. 23) ; the anterior part 

 (about 2 mm.) of the seminal duct, showed on its inside out to its 

 mouth on the glans (fig. 23) a clothing with rows of hooks; the 

 diameter of this clothed part was then 0*08 mm., and the end of it 

 was (as often in the Polyceridse) (fig. 23) everted. The hooks were 

 colourless, of usual form, of a height up to O02 mm. (fig. 24). The 

 albumino-mucous gland as usual. 



The differences in outer form and anatomical structure from the 

 typical species does not seem to me to be of sufficient value to justify 

 the establishment of a new species. I regard the form examined as 

 a variety of the E. croceus of the Mediterranean (and perhaps of the 

 Atlantic) Sea. 



An additional specimen captured off the Tugela Eiver mouth 

 showed some differences in its habitus, but certainly belonged to the 

 same species. 



This specimen had a length of 20 mm. by a breadth of the back 

 proper of 6 and a height of 7 mm. The frontal veil showed 6 arbor - 

 escences, and the back on either side 5 arbuscular appendages ; the 

 gill had the usual 5 leaves. 



The whitish bulbus pharyngeus 3-5 mm. long by a height and 

 a breadth of 3 ; the yellow mandibular plates as above. On the 

 tongue 13 series of tooth-plates ; in the rasp-sheath 9, the total 

 number of series being thus 22 ; the plates as above, the number of 

 outer plates as much as 18. The length of the first lateral plate was 

 nearly 0'40 mm., that of the third 0*35; that of the outermost of 

 outer plates 0-075-0-10-0-12, that of the innermost 0-16 mm. 



The penis projected just as above. 



KALINGA, Aid. et Hanc. 



Alder and Hancock, Notice of a Coll. of Nudibr. Moll. Trans. Zool. 



Soc, v., 3, 1864, pp. 134-136, pi. xxxii., figs. 7-10. 

 E. Bergh, Malacolog. Unters., iii. (Heft xvii.). 1890, pp. 959-962. 



taf. lxxxviii., figs. 19-20; taf. lxxxix., figs. 46-47. 



Corpus ovale, postice rotundatum, brevicaudatum ; limbus fron- 



