10S PROCEEDINGS OF THE ACADEMY OF [1879. 



of examining a colored drawing of the animal marie by Cooper. 

 The color of the back was here ochre-yellow, with scattered small 

 and some larger black spots ; on the middle of the back especially 

 several larger elongate irregular patches ; the rhinophoria of 

 somewhat more reddish color. In the sill eight leaves. 



Through cautious emollition of one of the larger and one of the 

 smaller individuals the nature of the lip-disk and of the armature 

 of the tongue could be determined. The former was quite as in 

 the typical species. The tongue showed thirteen to fifteen rows of 

 plates ; the number of rows further backward could not be deter- 

 mined with certainty, there seemed to be about fourteen to fifteen 

 developed rows, and the total number of plates thus seemed 

 scarcely to exceed thirty-three to thirty-six. The series seemed 

 to contain about sixty to seventy plates. These plates (figs. 6, 7) 

 were very like those of the typical species, perhaps he hook was 

 a little slenderer; the height of the outermost plates (fig. 7) was 

 commonly about 0.1-0.15, and the height increased through the 

 series of plates to about 0.28 mm. 



Perhaps this form might prove to be merely a variet\ T of the D. 

 tuberculoid. 



CHROMODORIS, Alder and Hancock. 



Cliromodoris, A. and II. Mod. Brit. Nudibr. Moll., vii. p xviii. 1855. R. 

 Bergh, Neue Nacktschn. der Sudsee ii. in Journ. der Mus. Godeffroy, 

 Heft viii. pp 72-82, 1875, and iv. 1. c. Heft xiv. pp. 1-21, 1878. 



Goniobranchus, Pease, Am. Journ. Conch, ii. 1866, p. 204. 



Doriprismatica, A. d'Orbigny (pp.), Moll, des Isles Canaries, 1834, p. 40, 

 note. 



The Chromodorid.ee of Alder and Ilancock, the Goniobranehi of 

 Pease were some years ago (1875) revised by me after careful ex- 

 amination of fourteen species, three of which were then published, 

 the rest more recently (1878). 



Meanwhile I had shown' that the genera Glossodoris, Actino- 

 doris, and Pterodoris, established by Ehrenberg in 1831, should 

 be dropped, being founded on non-essential and inconstant cha- 

 racters of the branchial leaflets of different Ghromodorides. 

 Moreover a part of the genus Doripriamatica, established by 

 D'Orbigny (1834) belongs to this group. The name given by 

 Alder and Hancock must be conserved for this genus. 



1 R. Bergh, Krit. Unt. der Ehrenberg 'schen Doriden, Jahrb. d. D. Malak. 

 Ges. iv. 1877, pp. 52-58. 



