216 SCIENTIFIC RESULTS OF THE 
spermatocysta (fig. 6b) quite imbedded in and concealed by the mucous 
gland, only a part of its chief duct free on the surface of this last ; 
the spermatocysta scarcely shorter than the spermatotheca, pear-shaped, 
incurved ; the duct to the mucous gland (fig. 6d) passing from the end 
of the bag, the other strong, longer (fig. 6c), opening in the duct of 
the spermatotheca, where it begins to be wider (vagina); the vagina 
(fig. Ge) rather wide, but short. The mucous gland whitish, yellowish 
and dirty yellow. 
2. L, varians, Bgh. PI. XI, fig. 13, 14; Pl. XIII, fig. 1. 
ZL. vartans, B. R. Bergh, Malacol. Unters. 1. c., 1878, p. 615, 614. 
Color ccerulescens vel albescens vel flavescens. 
Dentes laterales margine interno denticulati fere usque ad apicem. 
Hab. Oc. Pacif. (Ins. Kyska). 
Of this species six specimens were taken by Dall, in July, 1873, at 
Kyska Island, on sandy ground, at a depth of 9-14 fathoms. Four 
specimens were sacrificed to the anatomical examination. 
According to Dall the color of the living animal is “bluish.” The 
animals preserved in spirits were of a uniform whitish color, so too 
the rhinophoria and the branchia. Their length was 9-12.0 mm. by 
a breadth of 5.3--7.0 and a height of 8—4.5 mm.; the breadth of the 
foremost part of the foot 3.6-5.0 mm. The height of the rhinophoria 
reached about 2.2 mm., of the branchial leaves 1.0 mm. 
‘ihe form almost entirely as in the typical form and as in the L. 
hystricina. ‘lhe head as in the last species ; also the openings of the 
rhinophor-holes, with their (mostly three) larger tubercles, set with 
equal spaces; the club of the rhinophoria with about twelve to fifteen 
rather thick leaves. The tubercles of the back as in the ZL. hy.tri- 
cina; the number of larger ones much exceeding that of the smaller, 
which are scattered between them. The branchial disk as in the Z. 
hystricina, also the branchial leaves, whose number did not surpass 
twelve to twenty. The foot as usual. 
The central nervous system (fig. ]) nearly as in the L. hystricina. 
The cerebro-visceral ganglia of roundish or oval form, as also the 
pedal ones which were not much smaller than the former. ‘The com- 
1 In my ‘‘Malacolog. Unters.’’ (Semper, Philipp. II, ii, Heft xiv, 1878, 
p- 606-613 ; Tab. Ixiv, fig. 13, 14-19 ; Tab. Ixv, fig. 1-5, 6-18) I have given 
some anatomical remarks on the typical Z. délamellata and on the Greeii- 
landic variety (D. liturata, Beck). 
