CARL CHUN. 



[REP. OF THE "MICHAEL SARS" NORTH 



The tentacles of the specimen captured at Stat. 62 

 are well preserved on both sides. They are whip-like, 

 having a round stem and an enormously long club 75 mm 

 in length, which exhibits no thickening and is pointed 

 at the end. The protective webs are quite plainly visible, 

 being about 0-5 mm broad and showing broad and 

 densely located transverse muscles. The minute suckers 

 about 0-25 mm in diameter are scantily distributed in two 

 rows on the proximal part of the club; very soon however 

 the suckers are gathered irregularly into approximately 4 

 rows, then gradually arranged by 12 and finally by 18 

 or 20 in an oblique row. An accurate enumeration of 

 the suckers is difficult, as the club is round and the 

 suckers occupy nearly two-thirds of its surface. 



The gladius exhibits in a small specimen from Stat. 

 52 a free cone, the terminal part of which is perfectly 

 closed for a length of 23 mm. Generally speaking it 

 seems to be similar to the gladius previously described 

 by me in the case of M. cordiformis. 



The colour of our specimens is quite striking, for 

 though not in good condition we can plainly see that 

 fins and body both dorsally and ventrally are of a bright 

 purple rose colour; along the rows of suckers and on 

 the buccal skin a dark, almost black, rose colour is 

 visible. 



As a character not unimportant to the definition of 

 the species I finally draw attention to the occurrence of 

 light-organs on the eyes. Two light-organs are located 

 on each side of the enormous greyish-blue eye bulb, the 

 diameter of which is 26 mm in the largest specimen. 

 A large light-organ 4 mm, in diameter is situated on the 

 median inner edge level with the mouth of the funnel, 

 and a smaller one 3 mm in diameter is noticeable in 

 front, between the bases of the 2nd and 3rd arm. In several 

 specimens these large and peculiar light-organs are visible 

 through the skin. 



As mentioned above this new species is marked in 

 a very peculiar way, the skin being decorated by a pattern 

 of rhombic figures. The rose colouring having been 

 better preserved in the furrows between these figures, 

 the latter become more prominent. We can thus plainly 

 see that the marking is generally caused by diagonal 

 furrows, separating the rhombic figures, which are about 

 4 mm broad on the average. 



In one of the large specimens from Stat. 52 we 

 find on the ventral side about 6 polygons in each trans- 

 verse row, while the head exhibits 2 oblique rows of 

 rhombuses, starting from the base of the 4th arm, and 

 bordering off a triangular space containing about 5 rhombs 

 around the funnel. In many cases, however, the rhombic 

 character of the marking is not so regular, and we find 

 either polygonal markings or wart-like protuberances. As 



the specimens have been damaged, in some cases the 

 ventral side in others the dorsal being worn and frayed, 

 the marking is never clearly visible in all parts of the 

 body," but a comparison of the specimens shows that the 

 marking occurs all over the ventral area of the body, 

 including the fins and the bases of the 4th arms, as well 

 as on the dorsal area of the fins. 



Grimalditeuthis Bonplandi Verany. 



Loligopsis Bonplandi Verany 1837, p. 99, pi. 1 a. 

 Grimalditeuthis Richardi Joubin 1898, p 101, figs. 1, 2. 



Bonplandi Pfeffer 1912, p. 628, pi. 47, fig, 1. 



At Stat. 53 the net lowered to 2600 m captured 

 a Chiroteuthid, which evidently belongs to the genus 

 Grimalditeuthis. The tentacles and the second posterior 

 fin have been lost, the gladius being broadly broken off 

 at the hind part. The anterior fin is however well pre- 

 served and exhibits the squarely oval shape peculiar to 

 this genus. The arms do not vary much in length, and 

 their relative size may be characterised by the formula 

 3, 2, 1, 4. The eyes have during capture been caused 

 to protrude a little, and the stalked olfactory tubercle is 

 situated level with the funnel. An important feature in 

 the genus Grimalditeuthis is the symphysis between the 

 edge of the mantle and the funnel cartilage, a feature 

 found in our specimen, which is semi-transparent and 

 exhibits a delicate pigment consisting of purple chromato- 

 phores, situated on the dorsal parts of the head, along 

 the gladius and on the arms. The present specimen differs 

 from Grimalditeuthis Bonplandi — described by Joubin in 

 1900 from a beautifully preserved specimen under the name 

 of G. Richardi— in lacking the bulb-shaped and strongly 

 pigmented swelling at the end of each arm. Whether 

 this character, however, is sufficient to establish a new 

 species can only be learnt from future collections. 



Dorsal length of mantle (from hinder edge of 



the fin) 56 mm 



Length of neck and head 29 „ 



Diameter of eye 5 ,, 



Breadth of both fins 42 „ 



Length of the fins 27 „ 



Doratopsis Rochebrune. 



As mentioned in a previous paper (1910) I agree 

 with Ficalbi in considering the neat and slender forms 

 described as Doratopsis as being really larvae of Chiro- 

 teuthis. Full-grown specimens of Chiroteuthis have cer- 

 tainly not been taken by the expedition, but the captures 

 include a number of juvenile forms which I consider as 

 belonging to Doratopsis. 



