DISCODORIS BRANNERI MAC FARLAND 7 ! 



The vaginal duct is whitish, muscular, of nearly uniform 

 diameter, and 4.0 mm. in length. It describes a loop (PI XII fig 

 65) returning upon itself and opening into the spermatotheca 

 PL XII, 65, S pth.}, which is a conspicuous dark spherical 

 structure, 2.0 mm. in diameter, lying in the mid-dorsal region of 

 the anterior genital complex. Upon its dorso-anterior face is 

 the common opening of the vaginal and the uterine ducts con- 

 cealed by the overlapping proximal end of the vagina ' The 

 uterine duct (PI. XII, fig. 65, u. rf.) is slightly the more slender of 

 the two, and passes obliquely forward along the inner face of 

 the nidamental gland, beneath the sack like spermatocyst, which 

 is doubled above it. Near the anterior end of the nidamental 

 gland the uterine duct receives the short slender duct of the 

 spermatocyst (PI. XII, fig. 65, sp. ,.), an elongated pear-shaped 

 organ of a whitish color, 1.5 mm. in length by i.o mm. in 

 diameter, and closely packed with spermatozoa. Its slender duct 

 is slightly less than one-half the length of the cyst itself 



Nidamental gland. The uterine duct passes into the anterior 

 id of the nidamental gland (PI. XII, fig. 65, . a. c.), immedi- 

 ately after receiving the duct of the spermatocyst, and at a point 

 not far from the entrance of the oviduct, which joins the anterior 

 end of the hermaphroditic ampulla to the nidamental gland 

 In most Dorididae the greater portion of the anterior genital 

 complex is made up usually of the nidamental and the albumen 

 ids. In this individual the two glands in question form but a 

 very small portion of the whole, being but 2.0 mm. in extreme 

 length by 1.2 mm. in width and i.o mm. in thickness This 

 proportion may possibly be due to absence of secretory activity 

 n a non-breeding season, or to non-maturity. The surface of 

 the nidamental gland is finely sculptured with minute ridges and 

 ressions, ,s pinkish in color, and opens externally, immediately 

 dow -and behind the opening of the vagina, by means of a broad 

 XII, fig. 65, . rf.), 1.5 mm. in length. The albumen 

 gland is included in the windings of the nidamental gland being 

 exposed as a small oval area, i.o mm. in length by 0.3 mm. in 

 width, upon the upper face of the larger gland. At the anterior 

 >rder of this area is found the entrance of the uterine duct. 



The systematic position of this species presents some dif- 

 Uties due mainly to the well-developed penis armature, a 



