68 Transactions of the South African Philosophical Sociciy. 



A small number of species is known hitherto, excepting the N. 

 gratiosa of the Mexican Gulf,* only from tlie Philippine Seas (Cap) 

 and the Pacific Ocean. 



1. N. nigerrima, Bgh. 



2. N. Kubari/amc, B. 



3. N. diaphana, B. 



4. N. gracilis, B. 



5. N. morosa, B. 



6. N. cristata, B. 



7. N. gratiosa, B. 



8. N. ruhropaimlosa, B. (Siboga). 



9. N. lineolata, B. (Siboga). 



10. N. Amitina, B. (Siboga). 



11. N. capensis, Bgh. n. sp. 



12. N. sp. (Semperi, B.). 



13. N. (?) rubro-ocellata, B. (Siboga). 



14. N. {?) Edwardsi (Angas). 



Nembrotha capensis, Bgh. n. sp. 

 Pi. XII., figs. 8-17. 



Of this form I had three specimens to examine, procured at rocks, 

 Kalk Bay. 



The two larger were examined by dissection, more particularly the 

 largest. When alive the colour was " dark blue." 



The length of the specimens was 3-8-4-2 and 6*7 cm. The latter, 

 the lax'gest, had a height of 2 cm. at the gill, which was about 8 mm. 

 high ; the breadth 1-2 cm., that of the back proper 1"1 ; the breadth 

 of the foot 7 mm., the height of the club of the rhinophores 4 mm. 



The colour was uniformly deep blackish blue ; the sole of the foot 

 somewhat yellowish white. 



The fortn of the animal, as usual in the Nembrothae, rather com- 

 pressed. The short tentacles, as it were, refolded on the top ; the 

 sheath of the rhinophores somewhat prominent, the club of the 

 conical rhinophores with about 30 lamellae and a black terminal 

 papilla. The true back limited by a low brim ; the gill situated 

 before the middle of the back, the number of the gill-leaves 7, their 

 form as usual. The anal papilla completing the gill ring 1*75 mm. 

 high. The foot as usual in the Nembrothae. 



• R. Bergh, Rep. on the Nudibranchs (Blake Expedition). Bull, of the Mus. 

 of Comparative Zoology of Harvard College xix., 3, 1890, pp. 172-175. taf. ii. , 

 figs. 15; taf. iii., figs. 1—1. 



