18 GASTEROPODA. DORIDID. 
4. Rocinela. Corpore convexiusculo, verrucis longiusculis acu- 
minatis. 
5. Elfortiana. Corpore convexo, verrucis papillatis ; lateralibus 
(posticé preesertim) elongatis, branchiis 16-radiatis. 
** Dorso lateribusque verrucosis. 
6. marginata. Corpore ovato depresso leevi, pallio lateribus 
diaphanis. 
7. nodosa. Corpore elongato, dorso tuberculis octo in lineas 
duas laterales digestis, pallio lateribus tenuissimis, bran- 
chiis 12-radiatis. 
8. coccinea. Dorso tuberculato, tentaculis dorsalibus ad apices 
truncatis stylo retractili instructis, branchiis 10-radiatis. 
The back of Doris has no additional appendages ; in the in- 
digenous species its surface is either warted, slightly tubercu- 
lated, or quite smooth. The foot is obtuse behind. The 
mouth produced into a tube. Tentacula fleshy, wide and flat, 
without any appearance of eyes. 
The anatomy of this genus occupies the fifth of Cuvier’s 
‘ Mémoires sur les Mollusques.? According to this author, 
the brain varies in form; he has observed it to be oval in one 
species and lobate in another. 
The eggs of Doris, which I received from Mrs. Griffiths, are 
deposited on dead shells or rocks, to which they are attached 
in mass by a glutinous matter that is insoluble in water. 
1. Doris Monracut. 
D. depressiuscula, verrucis planis, branchiis octo-radiatis. Co- 
lor flavicans aut subcroceus. 
Long. 2 poll. 
Habitat in Danmoniz Australis mari, rarissima. 
Body rather depressed, the warts flat, the branchie com- 
posed of eight rays. Colour yellowish or pale saffron. Length 
2 inches. 
Inhabits the rocky shores of the south-western coasts of 
Devon and Cornwall, but is extremely rare. I have received 
specimens from Salcombe Bay, the Plymouth Sound, and 
Padstow. It was discovered by Montagu, who supposed it 
