Fam. 1, Plate 12. 



Figs. 9 to 16. 

 DORIS INCONSPICUA, Alder and Hancock. 



D. elliptica, depressa; pallio purpurescenti-albido, punctis minutis fuscis, tuberculisque parvis, 

 obtusis, ornato ; tentaculis subrobustis, lamellis compactis ; branchiis 10 obtusis, albidis, pinnatis, anum 

 haud propinque cingentibus. 



Hab. On Cellepora pumicosa, from the deep-water fishing boats,, Northumberland, Mr. R. Howse. 



Body nearly half an inch long, elliptical, depressed, and nearly equally rounded at both 

 ends. Cloak of a dull white, tinged with purple, and sprinkled with very minute brown spots : 

 it is covered with numerous small, obtuse, spiculose tubercles, nearly equal in size. The 

 spicula of the cloak are rather small and stout ; they are more regularly arched than usual, 

 and are not arranged so regularly as in some of the allied species. Dorsal tentacles rather 

 large, stout, and nearly linear ; the upper portion is pale yellow, with about fourteen compact 

 laminae, approaching very near to the apex and extending two thirds downwards. The 

 margins of the cavities are plain, or with only the usual tubercles of the cloak. Branchial 

 plumes ten, rather small and obtuse, dull white, set in an incomplete circle round the anus, 

 and at a little distance from it. They are simply pinnate ; the pinnae being ten in number, 

 rather stout and close-set. Head with a broad veil a little undulated at the margin. Foot 

 elliptic-oblong, slightly bilobed in front, rounded behind, and extending a very little beyond 

 the cloak when the animal is in motion. The colour is a dull white, with a slight tinge of 

 yellow in front ; the liver appears in a large, broad patch of dark purple through the centre. 



This species is closely related to D. pusilla and D. sparsa, but may be readily distin- 

 guished from both by the form of the tentacles and branchial plumes, and from the former, 

 especially,, by the character of the tubercles. 



Two individuals were obtained in March, 1848, adhering to Cellepora pumicosa, to which 

 were also attached two patches of spawn. This is a close, depressed, spiral coil, with the 

 eggs small, white, and rather numerous. 



Pigs. 9, 10. Doris inconspicua, different views. 



11. A portion of the skin. 



12. Tentacles. 



13. A branchial plume. 



14. Spicula. 



15. Spawn. 



16. A portion of the same, showing the ova. 



