KUNGL. SV. VET. AKADEMIENS HANDLING AR. BAND 41. NIO 4. 



21 



of yellowish or white opaque spots on each side near the mantle-margin. L. c. 

 30 mm. C. obvelata (Müller 1776) = repanda (Alder & Hancock 1842). 



PI. Ill tigs. 7— it. 



II. Back smooth; radula 40.1.40. Colour white; rhinophores and gills yellow, liver 

 brown, translucent; mantle with sulphureous spots near the margin. L. 15 mm. 

 (in the collections) C. glabra (Friele & Hansen 1876) 



= Doris laevis Müller of Loven 1846. 



Fam. Polyceridae. 



I. Mantle with a high crista on each side ( >t the median line and terminating with five lobes behind the 

 gills; back with club-shaped papillae; rhinophores with laminated club: oral tentacles indistinct: no man- 

 dibular radula 20.0.20 Triopella G. 0. Sars. 



II. Mantle without cristae. 



A. Rhinophores with sheaths. 



1. Club of the rhinophores smooth; sheaths with papillae : mantle-margin in- 

 distinct; papillae cylindrical with obtuse ends; radula 18.0.18; an unpaired 

 jaw present Aegires Loven. 



2. Club of the rhinophores laminated ; sheaths low, whitout papillae. 

 a. Mantle-margin distinct; body papillated. 



+ . Papillae club-like, in the mantle-margin; no mandibulse; oral tentacles 



cylindrical ; radula 13.2.0.2.13 Triopa Johnston. 



+ +. Papillae conical, also on the back; mandibular strong, triangular; oral 



tentacles = broad triangular lobes at the sides of the head; radula 



6.2.1.2.6 Issa Bergh. 



b. Mantle-margin indistinct: body smooth; gills with lateral appendages; mandibulse present; radula 

 without lam. med.; oral tentacles absent Thecacera Fleming. 



B. Rhinophores without sheaths, a little retractile, club laminated ; mandibular 

 present; oral tentacles replaced by small lobes; mantle-margin behind the 

 gills with 



1. many processes; mandibular without produced superior angles; radula 

 8.2.0.2.8 Palio Gray. 



2. one process at each side ; mandibular with wing-shaped superior processes ; 

 radula 4.2.0.2.4 Polycera Cuvier. 



Triopella G. O. 8ars 1878. 



Gills 3, minute, placed semicircularly before the anus: one row of papilla; outside each crista and one 

 papilla behind each rhinophore; the crista.' united in front between the rhinophores. Colour whitish. L. 7 mm. 



T. incisa (M. Sabs 1S72). 



Aegires Loven 1844. 



Gills 3, tripinnate, each with a long tuberous process by the side ; velum with 

 10 papillae; most of the papillae of the back set in longitudinal rows. Colour red- 



