PROF. OWEN ON NEW AND RARE CEPHALOPODA. 141 
(Pl. XXVI. fig. 5). 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. XX VI. 
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 “ frena” to the outer surface of the lip. Of these the 
dorsal one, 7, is azygous and rises from the web at the basal interspace of the dorsal 
pair of arms 1,1. The contiguous pair of freena are similarly attached to the basal webs 
between the first and second pairs of arms. The frena 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 frena 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, 7, 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. XX VI). 
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, 6, 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 8 lines. The transverse diameter of the fore part of the body is 2 inches 
3 lines. 
Halfway toward the hind end the body gradually 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. XX VII. fig. 2, f). The 
fins (ib. fig. 1, &, &) 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 ventral 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 
2A 2 
