1877.] ANTHOBRANCHIATE NUDIBRANCHIATE MOLLUSCA. 201 
merely the evanescent colours being given, that it is sometimes a 
matter of doubt whether they belong to the genus at all. Such 
being the case, no accurate synoptical table of the species can be 
formed in the present state of our knowledge. 
List of Species’. 
1. Dorts HEMPRICHII. 
Asteronotus hemprichii, Ehrenberg, Symb. Phys., An. evert. 
excl. insect. (1831). 
Hab. Red Sea (Massowah). 
2. D. crventa, Quoy & Gaimard, Voy. de l’Astrol. Zool. ii. 
p- 260, pl. 18. f. 5-7 (1832). 
Actinodoris cruenta, Gray. 
Doris (Argus) cruenta, Morch. 
Hab. New Guinea. 
3. D. CRUENTATA. 
Asteronotus cruenta, “Alder, MS.,” Gray, Fig. Moll. An. iv. 
t. 226. f. 2 (1850). 
Hab. Torres Straits. 
4. D. ANGUSTIPES. 
Doris (Argus) angustipes, Mérch, Journ. de Conchyl. 3° ser. iii. 
p- 32 (1863). 
Hab. St. Thomas. 
5. D. souea, Cuvier, Ann. du Mus. iv. p. 465, pl. 74. f. 1, 2 
(1804). 
Doris semelle, De Blainville. 
Hab. Mauritius. 
6. D. scasra, Cuv. 1. c. p. 466. 
Actinodoris scabra, Gray. 
Hab. Timor, Tonga, New Guinea. 
7. D. rorsteri, De Blainv. Bull. Sc. Soc. Phil. année 1816, 
p- 94. 
Hab. Atlantic. 
. 8. D. puncrata, Quoy & Gaim. l. c. p. 262, pl. 18. f. 3-10. 
Actinodoris punctata, Gray. 
Hab. New Zealand. 
1 I commenced by placing the species next to each other according to 
their affinities ; but for reasons just alluded to, this cannot always be done ; 
hence, except in some cases, it does not follow in this and in the following 
lists, that the forms arranged close together are always those most nearly re- 
sembling one another. 
