CEPHALOPODA .MASSY. |i;7 



('linn (in. p. _'()_') considers that the thirl v-livc larvae from tin' Atlantic 

 and Indian oceans which he has met with lielong to more tliau one species of 

 Ommatostrephidae, one lieing ;i tvpe with slender liodv and moderate-sized eyes, 

 and the other having a plump liodv and great eyes. 1 'teller ('li'. p. :!s:i). with regard 

 to this, poims out that Yen-ill's name of Sh not* ntliix is older than the name 

 Ommatostrephes, &a& thai two species of this genus are found in the tropical pai-t of 

 the Atlantic e.g., X. bartranu (Lesueur), common, and X. jit, rn/nt*. Sieensti-np. ran- 

 (I.e. p. :!80). N. bartrami is cerlainlv [n-esent in the Indian Ocean also. IMP I'leller 

 seems to doiilit St eenst nip's record of N. ///< /vy/^x from .Mauritius, as no museum 

 possesses anv specimen of this species from tlie Indian Ocean. lie. therefore, arrives at 

 the conclusion that liuth ( 'linn's types are prolialilv referable to X. li/irtruini. and that 

 probably fluctuating conditions of environment may account for their individual 

 variation. The Xew Zealand specimen in the present collection appears to lielong to 

 ('linns type, with long narrow mantle, and seems to lie oliviouslv a different species 

 from the specimen from the North Atlantic, which, although possessing a much shorter 

 mantle-length, has a wider head, and more developed eves and arms. The mantle of 

 this specimen is turned hack so that the form of attachment, resembling exact Iv the 

 figures of Chun (I.e. pi. 21. tigs. :! and 4). can lie seen. 1 think that it is possible that 

 future material may go to prove that Chun was right in dividing his finds into two 

 species. The broad-bodied form would appear to have a wide range in the Atlantic. 

 as a verv voung specimen with a total length of :i mm., taken off the south-west of 

 Ireland liy the '' Helga," belongs to this type. 



Distribution. Both types of Chun in Indian and Atlantic oceans. Tropical 

 Pacific, the wide-bodied type (Tssel, '08); Marquesas (Iloyle. '()4): Pacific (De 

 I'.lninville. >/< Chun); North Atlantic (Chun, '13). 



FAMILY HISTK TEUTHI1>AE. 

 1 (i. Stigmatoteuthis I'/unii, I'feffer. 



trutJilx Hoyh'i, Chun, " Valdivia" Exp., part I, Oegopsida, pp. 170-17.), pi. IS, fig. 1 ; 

 pi. 1H. fig. 6 : pi. -'(}, figs. 1, >, 5, 10, 12, 1910. 



/x ('I,,,,!, Pfeffer, Plankton Exp., ].p. L'Sil-l'SS, 1912. 



Station 311, off Monte Yideo. :;j i".)' S.. Til) L'li' \\.. ~1 m,. young fish trawl. 

 plankton. April I'l'nd. 1 id:!.- ( '.) One. 



This is olivimislv a young 1 list iotmil hid. lint, unfortunately, il is a damaged 

 sjiecimen : the ventral surface of the head has heen torn away, and the end of the 

 mantle, including the tin. is much crushed. The mantle measures a little more than 

 3 mm. in length. Orderofarms: 3,2, 1,4. The fourth pair are much the shortest, and 

 measure about 1 .")<) mm. in length. The suckers of the arms are usually placed two 

 in a row. bill occasionally thev appear as ;!' placed almost singlv. It \va< impossible. 

 without injuring the specimen, to olitain a \ iew of t he rings of any suckers on t lie first 



