120 MARINE BIOLOGY OF THE SUDANESE RED SEA. 
In some there was, according to Mr. Crossland’s notes, a distinct orange 
border ; in others only a little whitish or reddish colour near the mantle-edge. 
The living animals are said to have attained a length of 8 cm., but the 
preserved specimens have shrunk considerably. The anatomy of those opened 
proved to be as usual in this species. 
Doripopsis sp. 
The notes on the living animal are as follows :—‘‘ When actively crawling, 
peculiarly elongated, measuring 4 em. by 1:2 cm. The wavy mantle-edge is 
kept applied to the substratum. Rhinophores straight, perfoliated half their 
length, basal part thick. Gulls small and sensitive, rarely seen, tripinnate, 
4 (?) in number, white with grey rhachis. The gill-pocket is generally closed 
and its place marked by wrinkles. The rhinophores also are completely and 
readily retractile. The mantle is moderately ample. The general texture is 
soft but firm. The colour is translucent white with large and small spots of 
opaque white (which are thickened places in the skin) and sooty spots of 
black like fallen smuts. The viscera show through as bright pink.” 
The animal as preserved was shrunken and hardened, but the buccal parts 
seemed to be asin D. nigra. 
This may be Doridopsis atromaculata but no dorsal papillae are mentioned, 
nor are they visible in the preserved specimen. It may also be D. bataviensis. 
PHYLLIDIA VARICOSA, Lamarck. 
(Bergh: Bidr, til en Monogr. af Phyllidierne, 1869, p. 500.) 
The notes on the living animal say :—“ On sand among coral at the edge 
of the shore-reef ; seen at a depth of about a fathom and obtained by a diver. 
6 em. long and 3 cm. broad. Jet-black with raised warts of a dirty greenish 
white, which are very high and bear small secondary warts ; the tops of these 
are brilliant orange. The rhinophores are also orange and were kept retracted 
though the animal was continually crawling. The largest warts are arranged 
one behind the other in five longitudinal rows down the back. From the 
outermost of these rows low bands of greenish grey bearing small warts go 
to the mantle-edge.” _ 
The orange tips are harder than the rest of the epidermis. 
Additional Note, received 23rd June, 1908. 
MARIONIA CYANOBRANCHIATA (Riippell § Leuckart). 
(Riippell & Leuckart : Neue Wirbellose Thiere des Rothen Meeres, p. 16, pl. iv. fig. 3, 
1828). 
One specimen found outside Dongonab harbour in one fathom of water 
crawling among pearl shells on a coral and mud bottom, 
