612 LÖNNBERG, NOTES ON SOME RARE CEPHALOPODS. 



round the eye. The arms are also provided with some chroma- 

 tophores, and on the tentacles they are arranged in two rows, but 

 more numerous and irregularly disposed on the club. When the 

 chroniatophores are expanded they look reddish, when strongly 

 contracted almost black. They are not numerous enough to be 

 abie to give the body any colour. 



Leachia ellipsoptera (Adams & Reeve) Steenstrup. 



One fine specimen from lat. 40° N.. long. 32° W. and another 

 from the Atlantic, locality unknown. Both are feraales with 4 

 large nidaraental glands of peculiar shape, and externally provided 

 with inky pigment causing them to be conspicuous through the 

 transparent body-walls. The structure of these four glands is 

 exactly similar in every respect; the anterior pair only being a 

 trifle smaller. They project freely into the mantle-cavity the 

 anterior pair on the level of the ink-bag, the posterior pair on 

 the level of the gills or a little behind them. The shape of the 

 nidamental glands can be explained by saying that the original 

 elongate and straight glands have become doubled up at the 

 niiddle in a ventral direction and the middle parts have grown 

 together so that it forms au oval body, but both ends are free from 

 each other, divergent and partly curved outwards. It looks thus 

 as if an oval body had been split open halfway and afterwards the 

 split parts had curved a little from each other. In the »split- 

 opening» the glands are white and show the characteristic foliated 

 structure; externally they are covered by an inky pigment. The 

 leaves of the glands are not arranged in two parallel rows, but 

 extend straight across each läppet of the gland. 



In the funnel, we find in the middle of the dorsal wall the 

 central portion of the funnel organ in the shape of two pairs of 

 tongue-Iike lappets, the anterior ones smaller than the posterior, 

 which are about 2| mm. in length and not quite 1 mm. in breadth 

 at the base. These lappets are situated at the aboral end of a 

 central cushion. The lateral parts are also present in the shape 

 of one elongate about 8 mm. long päd on each side, anteriorly 

 narrow, posteriorly broader, on the ventral interiör wall of the sipho. 



