, . NTDIBRANCHIATE GASTEROPODA. 



by parallel, curved lines. The tongue is as earlier described (comp. I.e. figs. 14 — 17); the shining, 

 greenish yellow radula contained in one specimen 13 series of teeth, in the other 16 series; further back 

 were seen in the radula sheath in one specimen 17 series, in the other 14 series, of which the two 

 hindmost ones were not yet fully developed; thus the whole number of series was 30 1 ). Of the series 

 on the tongue the 9 — 10 foremost ones showed more or less worn tooth-plates, especially the lateral 

 plates were sometimes broken or torn out. The median teeth were yellow, the thin lateral teeth colour- 

 less. The height of the median teeth behind the middle of the tongue was o - 28 mm , hindmost in the 

 radula-sheath it was o-37" ,ra ; the length of the lateral teeth rose to o - 29 n,m by a breadth of the base of 

 o - i2 mm . The median teeth (fig. 3a) showed a short bifurcation of the side parts of the base; the hook 

 had commonly down the sides 8—9 denticles, of which all the outer ones were small. The lateral 

 teeth were flat, thin, tapering, with a rather broad base, finely and closely denticulated along the 

 greater part of their inner edge (fig. 3 b, 4). 



The salivary glands (Gland, salivales) were white, lengthened, attached to the stomach, 

 composed of lengthened, ramifying lobes (fig. 5). Partly interwoven with this another gland (Gl. ptya- 

 lina?) seemed to be, the lobes of which were longer, thinner, and of a quite different appearance (fig. 6); 

 its long excretory duct was rather abundantly set with small glandular lobes (fig. 6), and perhaps it 

 opened into the mouth tube 2 ). 



The oesophagus had a length of i-y™; the inside showed strong longitudinal folds. The 

 stomach was large, bagshaped, 9 mm long by a diameter of 4"'"'; from its cardia fine folds radiated 

 continuing through the whole length of the stomach and farther down through the blind bag of the 

 stomach, and out through the intestine. The intestine originating from the hinder end of the stomach, 

 runs to the right a little forward, and then with a bend backward. — The stomach and the fore part 

 of the intestine had ample whitish and gray contents, which were for the greater part of an indeter- 

 minable animal nature, but in which were found portions of small Crustacea and hydroidea, as well as 

 diatoms, cnidse, and grains of sand. 



The large, light yellowish white hermaphrodite gland reached behind only to the last third 

 of the length of the body; it rested on the blind bag of the stomach (the principal biliary duct), which 

 continued backward to the beginning of the tail; the length was 8 mm by a breadth (behind) of up to 

 ^.-mm anc j a thickness of up to 2 mm ; it was composed of 4 large lobes; in the small endlobes were ripe 

 oogene cells and spermatozoids. — The whitish anterior genital mass was 5""" long and broad. 

 In front was lying the large (fig. 7b), 5 mm long bag of the penis, which was rather thick-walled; the 

 white glans was only i ram long, a little curtailed, compressed-conical (fig. 8). The seminal duct (figs. 

 7 a, 8 a) was very long, and formed a large bundle. I did not succeed in finding the seminal vesicle. 



Coryph. salmonacea (C), var. 

 PI. V, figs. 9—10. 

 A specimen of this species that has come to hand after the finishing of the preceding examina- 

 tion, was taken on 65° 17' L,at N., 54^17' Long. \V., at a depth of 55 faths, and preserved in 70% alcohol. 



') The number of series in 7 earlier (I.e.) examined specimens was 29 — 32, in one it even rose to 36. 

 1 111]), i. c. p. 236. 



