KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 41. N:0 4. 29 



tips whitish. Radula with 29 plates; teeth with 5 denticles on each side. 

 L. 10 mm. C. concinna (Ålder & Hancock 1843). 



ri. Ill tig. 22. 



B. Oral tentacles = the rhinophores; papillge linear in 9 — 10 rows, the 4 first 

 more close-set than the i'est ; the anterior angles of the foot a little produced. 

 Colour white, tinged witli green, papillae green with white spöts and tips. 

 Radula with 36 plates, the tooth-margin with 5 — 6 denticles on each side. 

 L. 10 mm. C. viridis (Forbes 1840). 



Pl. III fig. 20. 



C. Oral tentacles > tlie rhinophores ; anterior angles of the foot produced ; pa- 

 pillae in 10 — 12 rows of 4 — 5 each, cjdindrical. Body orange, gills of the 

 same colour or brownish and covered with opaque white döts. Radula ? 

 L. 9 mm. C. angulata (Ålder & Hancock 1844'*) 



= Aeohs obtusalis Ålder & Hancock of Loven 1846. 



Pl. III fig. 19. 

 II. The rows coiitaining n\i to S — 11 papilla;. 



A. Rows 13, the midraost with the longest papilhp, 8 — 10 iii muiiber. Colour (iu alcohol) dirty yellowish, 

 papilhe with a whitish tinge. Eadula of many plates, teeth witli (I — 7 denticles on each side. L. 9 mm. 



G. Olrikii (MOkch 1857). 



B. Rows 11, the foremost with 9 — 11, the hindermost with fewcr jiapilhr: foot rather broad. Colour (in 

 alcohol) reddish or påle yellow. Radula with 23 — 31 plates. the teeth with 9 — 11 denticles on each 

 side. L. 5 — 8 mm. C. hirsuta Bekoh 1860. 



(utUoiiellii Bergh 1884. 



I. Papilhe conical, firnd)' attached to the body, in 4 groiips on each side; each group consisting of uumerous 

 transverse rows with 2 — 4, sometimes 5 — 6 papilhe. The >vriidi:led oral tentacles < the rhinophores. »Co- 

 lour dirty yellow: papillffi light brownish gray. yellowish at the tip» (in alcohol). Teeth of the radula with 

 10 — 12 denticles on each side. L. 2.5 mm. C', abyssicola Beegh 188-1. 



II. Papilhe subcylindrical in 30 — 37 rows with 3 — 4 iu each; oral tentacles < the rhinophores. Colour (in 

 alcohol) reddish brown, papilhe compact, dark, rusty brown with lighter tips; the under surface of the foot 

 wliite with a light tinge of red. Teeth of the radula with 8 — K) denticles on each side. L. 26 mm. 



C. ferrugiuea Fkiele 1902. 



III. Papilhe conical in about 20 close rows with 3 — 5 each: oral tentacles only a little < the rhinophores. 

 Colour (in alcohol) dirty wdiite, papilhe dark-blue or blackish, yellow at the top. Teeth of the radula with 

 7 — 9 denticles on each side. L. 16 mm. C. Berghi Fkiele 1902. 



Hervia Bergh 1874. 



Rhinophores a little > the oral tentacles; head rather broad; papiliic in dusters, the tirst with (i rows, 

 the 2ud with 5, the 3rd with 3; in each row at most 8 — 10 papilhe. Colour (in alcohol) dirty yellow-ish. 

 Radula Avitli 21 plates, teeth with a strong central spine and 6 — 7 smallw' denticles on each side. L. 10 mm. 



H. modesta Beegh 1874. 



('umiuiotus n. gen. 



Rhinophores fihform, united at the base ; oral tentacles very small, connected 

 by a low cutaneous fold across the broad head; papillae in about 12 or 13 rows on 

 each side, the first inserted in front of the rhinophores, the largest containing 8 — 9 

 papillae; anus latero-dorsal before the 7th row. Colour (in alcohol) whitish. L. 10 



— 13 mm, C. laticeps n. sp. 



Text-tigs. 2—4, 



