Browne — Fauna and Flora of Valencia Harhoar, Ireland. 723 



July oOth, 1897. An intermediate stage, with umbrella 

 about 10 mm. in width and 7 mm. in length. Manubrium 

 about 25 mm. in length. Mouth and stomach 2 mm. in length ; 

 mouth with four lips having a folded margin. Pour very long 

 perradial tentacles, but no traces of interradial tentacles. 

 Marginal tubercles, 87, nearly every one with a single cirrus. 

 Eight margiual sense-organs (otoliths not visible owing to the 

 specimen being in formalin). Gonads present, about 4 mm. in 

 length, on the outer half of the four radial canals on the sub- 

 umbrella, but not extending to the margin. Gonads also 

 present on the peduncle, about half-way down, about 5 mm. 

 in length ; one on each radial canal, side by side, forming an 

 oval mass. The gonads on the sub-umbrella and on the 

 peduncle of the stomach both contained immature ova. 



September 11th, 1897. A fine adult specimen. Umbrella 

 about 17mm. in width and 11 mm. in length. Velum about 

 1^ mm. in width. Manubrium, contracted, 22 mm. in length ; 

 the base of the manubrium about 10 mm. in diameter, and 

 having the appearance of a long funnel. Stomach and mouth 

 about 3|-mm. in length. Mouth with four lips, which have a 

 closely folded margin. Eight long tentacles of about equal 

 size. About eighty marginal tubercles, nearly every one with 

 a cirrus. Eight marginal sense organs (otoliths not visible). 

 The gonads on the sub-umbrella start near the margin, extend 

 over the top of the sub-umbrella cavity, and terminate a 

 little way down the peduncle. Gonads are also present in 

 the centre of the peduncle. Both sets contain ova; the 

 ova on the sub-umbrella were less advanced than on the 

 peduncle. 



In my description of the species taken at Plymouth, in 1895 

 (P. Z. S., 1896), I stated — " On each of the four radial canals, 

 about the middle of the peduncle, there is an oval mass of ova, 

 and also a genital band probably containing spermatozoa, ex- 

 tending along the radial canals from the base of the peduncle 

 nearly to the margin of umbrella." It appears from the Va- 

 lencia specimens that the sexes are separate, but I have not yet 

 seen the male. In the Plymouth specimen I recognised ova 

 upon the peduncle, but could not find any on the sub-umbrella, 

 where there was simply a homogeneous mass of cells resembling 

 an immature mass of spermatozoa ; but I am inclined now to 

 regard it as an immature ovary. 



