240 MR. P. S. ABRAHAM ON THE ([ Mar. 6, 
7. Potycrra Dust, Sars, Bidrag, p. 13, t. 2. f. 5, 6 [see. Sars, 
Besk. og Iagtt. 1835]. 
Idalia dubia, Gray. 
Hab. Norway (Bergen). 
8. P. coox1, Angas, Journ. de Conch. xii. p. 58, pl. 5. f. 6 
(1864). 
Hab. Australia (Botany Bay). 
9. P.? capensis’. 
Polycera capensis, Qu. & Gaim. in Freycinet, Voy. des Corv. 
l’Uranie et la Physic., Zool. p. 417, pl. 66. f. 4 (1824). 
Hab. Cape of Good Hope. 
Gen. Bracuycuuants, Ehrenberg, 1831. 
Mantle very small, forming a dorsal arena, with narrow upturned 
border. Rhinophores laminated, arising in front of the mantle-mar- 
gin. Branchize retractile. Mouth terminal. 
B. pantuerina, Ehr. Symb. Phys., An. evert. excl. ins. 
TTab. Red Sea. 
Fam. III. DORIDOPSIDA, Alder and Hancock, 1864. 
Doris-like Mollusca, without well-developed spicula in the in- 
tegument, with the mouth suctorial, opening on the front margin 
of the foot, with a retractile proboscis, but destitute of odontophore, 
jaws, or spinous collar. 
The absence of an odontophore, so generally possessed by the 
cephalophorous Mollusca, justified Messrs. Alder and Hancock in 
raising this group to the rank of a family. 
Gen. Doripopsis, Alder & Hancock, 1864. 
Doriopsis, Pease, 1860; Rhacodoris, Morch, 1863 (part of); 
Haustellodoris, Pease, 1871. 
Body more or less depressed, ovate or elliptical. Mantle ample, 
covering the head and the foot, smooth or with soft tubercles, and 
without marginal appendages. Rhinophores laminated and retrac- 
tile within cavities. Head indistinct, generally with two small 
lateral lobes, but without proper oral tentacles. Branchize generally 
ramose, retractile with the anus into a common cavity. 
This genus, as thus characterized, was first constituted by Alder 
and Hancock. Mr. Pease’s ‘‘ Doriopsis” had previously been 
published; but, as defined by him*, no one could consider it 
_ 1 The description and drawing are too imperfect to determine whether this 
is a Polycera or not. 
2 «Oblong or oval, depressed. Mantle large, covering head and foot. Dorsal 
tentacles two, lamellated and retractile, non-pedunculate. Orals none. Bran- 
chial plumes disposed in the form of a semicircle, on the posterior portion of 
the back, and retractile into a similarly formed slit, the convex portion poste- 
riorly.”—Prasr, 1860. 
