Taonidiun,.] CEPHALOPODA. 1057 



The suckers are of quite normal shape, and the horny ring both of the 

 median and marginal ones bears 4 strong bluntly pointed teeth. The 

 surface is smooth throughout. The colour is pale, almost white, and 

 the mantle semitransparent even when preserved, no doubt quite so 

 when living ; a number of oblong chromatophores are arranged in 

 about 8 transverse rows. The gladius, so far as could be ascertained 

 without extraction, is long, narrow anteriorly, expanded in the pos- 

 terior half. 



Dimensions. Length, total, 82 mm. ; end of body to mantle - 

 margin, 42 mm. ; end of body to eye, 45 mm. ; breadth of body, 

 12-5 mm. ; breadth of head, 3 mm. ; breadth of head across the eyes, 

 llmm.; length of fin, 7mm.; breadth of fin, 4mm.: length of 

 first arm right, 5 mm. ; left, 5 mm. : length of second arm right, 

 6 mm. ; left, 6 mm. : length of third arm right, 8 mm. ; left, 8 mm. : 

 length of fourth arm right, 8-5 mm. ; left, 8-5 mm. : length of ten- 

 tacle right, 33 mm. ; left, 37 mm. (Hoyle.) 



Type in the British Museum. 



Hob. One specimen, found washed up on the beach at St. Clair, 

 is in the Otago Museum, Dunedin. 



By the " Challenger " Expedition specimens were obtained in the 

 Southern Ocean, due south of Australia (two specimens) ; between 

 Sydney and Wellington (three young specimens) ; in the North 

 Atlantic, off the coast of Africa (one small specimen). 



Tribe 2. MYOPSIDA. 



The members of this tribe are characterized by having a .closed 

 external cornea, and by having only a single oviduct viz., that of the 

 left side. The internal shell has no longer a distinct phragmocone, 

 and is calcified (Sepiidce) or simply chitinous. The Myopsida are 

 more littoral in habit than the Oigopsida. 



Fam. SEPIID.EJ, d'Orbigny. 



Body oval, with long lateral fins, uniting behind ; mantle sup- 

 ported by cartilaginous tubercles fitting into sockets on the neck 

 and siphon ; eyes covered by skin ; arms with suckers, tentacular 

 arms entirely retractile ; siphon valved. Shell (cuttle-bone, sepion 

 or sepiostaire) broad, flat, thickened internally by numerous plates ; 

 terminating behind in a hollow imperfectly chambered apex or mucro, 

 without connecting siphon. Littoral. 



Genus 1. SEPIA, Linne, 1758. 



Sepia, L., Syst. Nat., ed. 10, 1758, 658. Type : 8. o//i.cliuilis, L. Ascaro- 

 sepion, Rochebrune, 1884. Doratosepion, Rochebrune, 1884. Rhombo- 

 sepion, Rochebrune, 1884. Spathiosepion, Rochebrune, 1884. 



General characters those of the family ; under the eyes a lid-like 

 fold, over them lachrymal openings ; 6 aqueous pores in the buccal 



34 Moll. N.Z. 



