370 



DORIDIU^. 



Body depressed, or subcon vex;- integument spiculose ; mantle 

 often tuberculate, covering the head and the foot ; branchiae 

 plumose or ramose, united at the base, and retractile with the 

 anus into a common pallial cavity ; mouth inferior, with two dis- 

 tinct oral tentacles (rarely absent ) ; odontophore broad, with 

 numerous spines in each transverse row. Bergh has proposed 

 the name archidoris for the thus restricted typical group. 



Angasiella, Crosse, 1864. 



Distr.—A. Edwardsi, Angas. Australia. 



Body elongate, rounded in front, attenuated and produced 

 into a point behind ; mantle everywhere covering the head and 

 foot; dorsal tentacles 2; subclavate; branchiae plumose, few, and 

 placed before the anus, a little behind the middle of the back. 



As M. Crosse has told us nothing about the retractility of the 

 branchiae or the condition of the oral tentacles, odontophore, 

 etc., we cannot be certain of the position of this group. 



Kentrodorts, Bergh, 1816. 



Distr. — 3 sp. Australasia. K. ruhescens, Bergh. 



Mantle broad, soft, with the upper side everywhere minutely 

 granular ; rhinophores retractile ; tentacles conical ; branchiae 

 retractile, the plumes tripinnate, podarium broad, the margin in 

 front deeply grooved, with the upper lip veliform and deeply 

 emarginated ; rounded behind ; no buccal armature ; no median 

 tooth, the lateral ones uncinate. Penis armed with a spine. — 

 Bergh. 



Chromodoris, Aid. and Hanc, 1855. 



Syn. — Doriprismatica, d'Orb, ISST (part), (xoniodoris, Cray, 

 1850 (part). Goniobranchus, Pease, 1866. Hemidoris, Stimpson, 

 1855. 



Distr. — 97 sp. Medit., Red Sea, Indian Ocean and Australasia. 

 G. magnijica, Quoy (xc, 93). 



Body elongate, subquadrate ; mantle narrow, covering the 

 head but not the extremities of the foot ; generally smooth and 

 marked with bright colors in stripes or spots ; oral tentacles 

 conical or tubercular. Branchiae linear, usuall}^ pinnate, retrac- 

 tile in a common ca^^^ity. Odontophore broad, with numerous 

 transverse rows of many close-set plates, each bearing two large 

 spines, one in fi-ont of the other, the posterior one bearing den- 

 ticulations, no central plate ; a buccal collar, formed of two 

 broad plates, bearing close minute bifid spines. 



APHELODORis, Bergh. Somewhat like Chromodoris, but mantle 

 and foot narrow; tentacles truncate, canaliculate; gills retractile, 

 consisting of five tripinnate leaves ; labial disk unarmed. Radula 

 without median plate, lateral plates with many hooked teeth. 

 A. Antillenais^ Bergh. St. Thomas, W. I. 



