PROF. OWEN ON NEW AND EAEE CEPHALOPODA. 141 



(PL XXVI. fig. 3). They slightly enlarge toward the middle of the arm, and thence gra- 

 dually decrease in size to the attenuated end. Each sucker is subspherical (PL XXVI. 

 figs. 4, 5, 5') ; the aperture of the cavity is circular, with a tumid margin ; and the cor- 

 neous lining terminates there by a finely spinous border. 



The outer lip, or buccal membrane (PL XXVI. fig. 3, h), is from 7 to 8 lines in 

 breadth ; the free border is produced into seven angles, corresponding to the places of 

 attachment of as many brachial " frsena " to the outer surface of the lip. Of these the 

 dorsal one, ^, is azygous and rises from the web at the basal interspace of the dorsal 

 pair of arms i, i. The contiguous pair of frsena are similarly attached to the basal webs 

 between the first and second pairs of arms. The frsena of the third pair are attached 

 to the beginning of the ventro-marginal fringe of the third arm ; those of the fourth pair 

 are attached to the beginning of the contiguous marginal fringe of the fourth pair of 

 arms. The labial processes corresponding to the frsena are simply pointed and short, 

 not acetabuliferous. The surface of the outer lip, extending from the scalloped border 

 to the inner lip, is finely villous. A narrow simple border, ^', is developed from the con- 

 tinuation of the outer to the inner or proper lip. This lip is thicker, more muscular, 

 and shows a crenate (hardly to be called fringed) border. The point of the ventral man- 

 dible is exposed in fig. 3 (PL XXVI.). 



The rostral part of the upper dorsal mandible (ib. fig. 6, a) is short and stout, and 

 sends down from its basal half a broad process, h, making the vertical diameter of the 

 rostrum equal to the entire length of this mandible. The apophysis, c, is subquadrate. 

 The rostrum of the lower ventral mandible (fig. 7, c) is longer and more acute, and has 

 no basal process ; its upper border is continued at f upon the apophysial part ; the 

 apophysis, g, is relatively more extensive than in the upper mandible ; and the lower angle 

 is produced. 



The length of the specimen of Loligopsis ocellata here described, from the tip of the 

 longest outstretched arm to the end of the body, is 1 foot ; the length of the head with 

 its brachial appendages is 7 inches 9 lines ; the length of the body, less the funnel, is 

 4 inches 3 lines. The transverse diameter of the fore part of the body is 2 inches 

 3 lines. 



Halfway toward the hind end the body gradvially contracts thereto, and terminates 

 in an obtuse point between the bases of the fins. The fore border of the mantle is 

 produced into a low angle at the middle of the dorsal side (PL XXVII. fig. 2,/). The 

 fins (ib. fig. 1, k, k) are subcircular, attached for an extent of 1 inch 1 line to the sides 

 of the hind part of the mantle, rather nearer the dorsal than the vfentral surface. The 

 combined breadth of the fins is 2 inches 6 lines ; the longitudinal diameter of each 

 is 1 inch 2 lines. 



The colour of the specimen when first received was crimson shading to violet, with 

 dark spots, brightest on the ventral and lateral surfaces. The spots average 1 line in 

 diameter, are circular or full-elliptical in shape, with a white centre ; their resemblance 



2a2 



