16 



JAMES A. GRIEG 



35 obliquely standing rows of papillae, sometimes with 

 5, but mostly 3 or 4 papilla in each row. The rows are 

 arranged in four indistinct groups, most prominent in 

 the smaller specimen. The anal papillae is situated at 

 the commencement of the second group of papillae i. e. 

 at the 14th or 15th row. The radula is endowed with 

 21 tooth-plates, each carrying 8 to 10 denticles on each 

 side. 



The smaller specimen is uniformly yellowish white, 

 the other is dusky yellowish brown. The appearance of 

 the larger specimen recalls Cuthonella femiginea described 

 by Friele. The papilla? are dark rusty brown with 

 light tips. 



In my paper "Nudibranchiate mollusker indsamlede 

 av den norske fiskeridamper "Michael Sars". 1 ) I have 

 demonstrated the great similarity between Bergh's C. 



be maintained as distinct. Comparison of the present 

 specimens with those collected by the "Michael Sars" in 

 1900 and 1902 corroborates the view here taken. 



C. abyssicola belongs to the cold area of the Nor- 

 wegian Sea and the adjacent parts of the warm area. 

 The type specimen was obtained in 1882 by the "Triton" 

 in the cold area of the Faroe — Shetland Channel (st. 9, 

 1113 m., -*- 1°1 C). Later on the "Michael Sars" took 

 it at two points in the cold area between the west coast 

 of Norway and Iceland, and in the Danmark Straits in 

 the border-zone between the warm and the cold areas. 

 The bathymetrical range of the species is 576 to 1113 m. 

 abyssicola and C. femiginea and C. berghi described by 

 Friele, 2 ) and shown that the latter two species cannot 



Kgl. norske Vid. Selsk. Skr. 1912, nr. 13, p. 11. 



2 ) Friele : Mollusken der ersten Nordmeerfahrt des Fischerei- 

 dampfers "Michael Sars" 1900, Bergens Museums Aarbog 1902, nr. 

 3, p. 10—11, pi. 2, fig. 1—4, pi. 3, fig. 3—10. 



Bergen, february 20, 1915. 



