ENDEAVOUR SCIENTIFIC RESULTS. 



as the mantle ; sagittate ; scarcely lobed in- 

 front, behind barely continvious above the 

 posterior tip of the body ; widest a little in 

 front of the middle, the lateral margins 

 obtusely angled. Anterior mantle margin 

 projecting forward in nuchal region to a 

 rounded angle, a similar but more acute 

 projection on either side of the funnel. 

 Locking apparatus well developed, the lateral 

 cartilages (Fig. 28) relatively broad, with a 

 wide central excavation. 



Head small, narrower than the body, widest 

 behind, where it is ornamented by a strong 

 fold of the integument ; distinctly tapering 

 past the eyes to the point of junction with 

 the arms. Eyes large, not protruding. Funnel stout, with 

 dorsal bridles and a large terminal valve. 



Arms stout, rather short ; their formula of relative length, 

 easily 3, 4, 2, 1 ; third pair decidedly the stoutest and longest, 

 dorsal pair distinctly smallest and shortest, the others nearly 

 equal ; dorsal arms conspicuously keeled above ; second 



32 



Fig. 28. — Loligo 

 etheridgei ^ [490], 

 locking cartilage, 

 from left side of 

 funae! of imra- 

 type ; ''amera 



outline. 



aA£A_ 



Fig. 29. — Loligo etheridgei ^ [489], homy ring of sucker of 7th-8th pair 

 from base of right third arm of type ; camera drawing from a mount in 

 balsam. 



Fig. 30. — Teeth from suiierior margin of same, seen in greater 

 magnification. 



Fig. 31.^ — Horny ring of eighth sucker from base of inner ventral row of 

 left tentacle club of paratype [490] ; camera drawing from a mount in 

 balsam. 



Fig. 32. — Portion of margin of same, seen in greater magnification. 



Fig. 33. — Horny ring from one of the larger suckers of the ventro- 

 marginal series on the left tentacle club of type [489] ; camera drav/ipg 

 from a mount in balsam. 



