126 BULLETIN (IF TIIK HI'KEAU OF FISHf:RIES. 



Pleural teeth 47, the first one strongly hooked with 3 large denticles on its inner margin (pi. xviii, 

 fig. 286), and 6-7 smaller ones on the outer margin. The successive pleune are of much the same 

 shape, the tip becoming longer and more pointed, the denticles limited to the outer margin alone and 

 increasiug in number to 12 (pi. xviii, fig. 29). The outermost pleuraj diminish in size, being finally 

 reduced to compressed, jagged, slightly concave plate.s (pi. xviii, figs. 30-31). 



The liver is smooth, plump, bluntly conical in outline, the apex directed backward and lying jii-t 

 beneath the branchial rosette. Anterior end obliquely truncate toward the left side from about tin 

 middle of the organ. Length 17 mm., breadth 8 mm., and height 6 mm. in an individual of 35 mu]. 

 total length. 



The hermaphrodite gland, yellowish in color, is distributed in thin lobules over the surface of the 

 anterior and lateral portions of the liver, extending well backward toward its tip. The hermaiihrodite 

 duct is formed by the union of 2 ducts meeting at right angles on the anterior oblique face of the liver, 

 coming from the upper right and left hand lobules of the hermaphrodite gland, respectively. The 

 main duct is quite short, dilating into the long ampulla, the posterior end of which describes a loop 

 upon the anterior median face of the liver and, passing forward, is looped back and forth upon the 

 lower inner and anterior faces of the anterior genital mass. Immediately after giving rise to the vas 

 deferens it passes into the nidamental gland close to the anterior border of the albumin gland. 



The anterior genital mass is oval in side view, somewhat wedge-shaped from above, the thin end 

 directed posteriorly and formed by the nidamental gland. The external face is convex, the inner one 

 flattened. The lower anterior border is occupied by the coils of the hermaphrodite ampulla, imme- 

 diately above which lies the dark spermatotheca, and upon this in turn the thick loop of the prostatic 

 portion of the vas deferens. Greatest antero-posterior length of inner face of the anterior genital mass 

 is 10 mm., its height 7 mm. 



The penis is short, about 2 mm. in length, passing over into the vas deferens, at first slender and 

 muscular, but rapidly increasing in diameter and becoming glandular. It courses inward and back- 

 ward upon the upper anterior face of the anterior genital mass, doubles downward upon itself and 

 returns outward and downward to its origin from the anterior end of the hermaphroditic ampulla. 

 Its greatest diameter is reached about midway of its length, where it measures 1.4 mm., with a tot;il 

 length of about 10 mm. The glans penis is short, bluntly conical, and armed with minute hooks. 



The vagina is short and narrow, tapering into the straight vaginal duct which courses directly 

 inw-ard and upward to the spermatotheca, into which it opens. Close to its entrance is the opening of 

 the uterine duct which receives the duct of the spermatocyst, about midway of its length tow"ard the 

 nidamental gland, into which it opens close to the opening of the hermaphroditic ampulla. 



The spermatotheca is somewhat spherical in shape, dark brown, and is about 3.5 mm. in diameter. 

 It lies upon the anterior inner face of the anterior genital mass between the loops of the prostate 

 portion of the vas deferens above and those of the ampulla of the hermaphrodite duct below. The 

 openings of the 2 ducts are very close together upon the outer face of the organ. 



The spermatocyst is pear-shaped, 1.4 mm. long by 1 mm. broad, and lies below and V)ehind tlie 

 loop of the vas deferens, its narrower end directed outward and downward, the duct short and slender, 

 joining the uterine duct about midway of the length of the latter. The uterine duct pa.-ses as usual 

 into the nidamental gland close to the anterior border of the albumin gland. 



Type no. 181287 U. S. National Museum. 



8. Cadlina flavomaculata ^lacFarland. 

 [PI. XXV, lig. 9; pi. XIX, ligs. 3J-S7: i.l. xxi, lig. 110,] 

 Cadlina flavomaculata MacFarland, op. cit., p. 43. 



Body elongate, elliptical, almost linear, depressed, bluntly rounded at the ends, less so behind 

 than in front. Notseum thickly set everywhere with low rounded tubercules. General color yellow- 

 ish white, inclined to cream, on each side of dorsum a row of 7-10 small lemon yellow spots borne 

 upon low tubercules, the first one of these spots just outside of and behind the rhinophores, the last 

 one outside of and usually behind the branchial plumes ( pi. xxv, fig. 9) . 



Rhinophores black, brown or brownish yellow, very conspicuous against the pale dorsum. 

 Branchial plumes white or yellowish white (pi. xxv, fig. 9). In alcohol the dark color of the rhino- 

 phores is usually permanent, the rows of lemon yellow tubercules become white and are usually easily 

 distinguishable, while the general body color becomes paler or is lost entirelv. 



