346 BULLETIN OF THE BUREAU OF FISHERIES. 



along the medio-dorsal line of the mantle. Eyes large, sessile; a row of four large oval photophores on 

 the ventral aspect. Left ventral arm hectocotylized. 



Type.— Liocranchia Brockii Pfeffer 1884 (species first named)=L. reinhardtii (Steenstrup), a species 

 of very wide distribution. 



Liocranchia globulus Berry 1909. (PI. liii, fig. 2-4.) 



Cranchia {Liocranchia) globula Berry 1909, p. 415, 419, fig. 9. 

 Liocranchia reinhardtii (pars) Chun 1910, p. 336, 337. 

 Liocranchia globulus Pfeffer 1912, p. 666. 674. 



Animal small, pelagic. Body almost completely spherical; short, rounded, the maximum diameter 

 almost but not quite equal to the length; mantle truncate in front, suddenly constricted posteriorly 

 and tapering rapidly to an acute point which forms the base of attachment for the fins. Mantle mainly 

 smooth; very thin and membranous; anterior margin passing in three even nearly equal curves from 

 each point of attachment to the next ; the latter three in number and about equidistant, the ventral points 

 of fusion with the base of the funnel being about as far separated from one another as either is from the 

 nuchal attachment. At the extreme mantle margin the position of each point of attachment is marked 

 externally by a series of small projecting cartilaginous tubercles of acutely conical shape; the dorsal 

 series is a close succession of at least 48 tubercles in single file, forming a narrow cartilaginous ridge 

 along the anterior two-thirds of the medio-longitudinal line, a wedge-shaped area forming the posterior 

 continuation of this ridge being hyaline and bare; the ventral series are each double , forming a A-shaped 

 ridge having its apex at the margin, and with about 20 minute tubercles of two sizes in more or less 

 irregular alternation in each line, flanked at the anterior end by parallel rows of two or three smaller 

 tubercles on each side (pi. im, fig. 2). The divergence between the diverging arms of these ventral 

 series is somewhat less than 90 degrees. 



Fins small, thin; very short and broad, so that the outline of each is roughly circular; separated 

 only by the minute posterior protrusion of the mantle, beyond which they extend for perhaps a third 

 of their length; base of attachment only about one-half the total length. 



Head minute; exceedingly short and broad; little projecting beyond the mantle. Eyes large, 

 prominent; lid apertures very small, constricted; a series of four rather large oval photophores is 

 visible on the inner ventral periphery upon the removal of the outer integument; they are subequal 

 in size, very closely placed, and to all appearances essentially similar under a low power lens. A 

 very large transparent fingerlike "olfactory papilla" has its origin from the outer integument just 

 back of the eyelid opening. Funnel short, broad, well projecting beyond the mantk, and with a 

 noticeable ventral flexion not far from the tip. 



Arms short, poorly developed; unequal, the relative order of length 3, 4, 2, 1 ; dorsal pair decidedly 

 the shortest and weakest, bearing only 6 to 8 pairs of suckers (largest near the base); second and fourth 

 pairs more nearly equal, each second arm with about 9 pairs of suckers; third pair much the largest 

 and longest, bearing 12 or more pairs of suckers. Umbrella present but poorly developed; extending 

 between the dorsal arms for nearly half their length, and not exceeding this width between any of 

 the arms; apparently absent between the arms of the ventral pair, and nearly so between these and 

 the third pair. Suckers exceedingly minute, pedunculate; in two regularly alternating rows; horny 

 rings apparently smooth, but this feature is somewhat difficult to ascertain. 



Tentacles stout, smoothly cylindrical, much thicker and heavier than the arms; nearly as long 

 as the mantle. Clubs little expanded, tapering to a bluntish point, lightly keeled, and furnished 

 with a narrow delicate swimming membrane along each margin. Suckers minute, pedunculate; on 

 the club in four rather crowded rows; largest near the middle of the club, very minute distally, and 

 also proximally, where they gradually become more widely spaced, each row in the meanwhile tending 

 to press in toward the center, so that there soon appear to be but two rows which continue down the 

 stalk for about two-thirds of its entire length;" aperture of suckers small; horny rings apparently 

 smooth, but surrounded by radial papilla?. 



a In the smallest specimen these suckers extend practically to the base of the stalk. 



