Gaily }[ariHe Lalioralori/^ Si. Amlrcics. 



79 



Consistent to withstand tlio vicissitudes of cajjturo. TIk; 

 example is considerably laifiertlian that obtained in Shetland, 

 nieasurinj; between .'5 and 1 inches, and at first sigiit resembled 

 a very larj,'e Aiii/ihijionts lact'iilnn'ns, Johnston. The general 

 colour was that of tlie human skin, or pale yellowish pink, with 

 a ri'ddish line at the ganglia and a faint reddish line on each 

 side in the line of the nerves. The mid-dorsal region was 

 Haeeid, from tiic suljjacent Huid in tlic proboscidian chamtjcr, 

 whilst on the ventral surface of the posterior tliird a series of 

 pale and closely arranged frills or pinn;e indicate the glandular 

 ca'ca of the gut. The skin had the usual soft creases and 

 li>l(ls, and secreted traHs});irent mucus in abundance. 



The large size of the specimen enables the minute structure 

 of the head to be more fully described. As formerly indicated, 

 the snout is separated by a curved line (tig. 2) from the 

 succeeding region, and has a whitish prominent ridge in the 



Fior. 2. 



\\. C M. 



median line anteriorly with a longitudinal groove marked by 

 (lark pigment, the tip especially being blackish, with a con'- 

 tinnation on each side along the ventral edge. The median 

 ridge at the tip often gives the impression of a bicornuatc 

 snout, but such is merely due to the mobility of the ]):irts. 

 A portion behind the cephalic furrow, as well as that in front 

 of it, is distinguished by its pallor from the rest of the body. 

 Though interrupted by the furrow at the boundary, tlic 

 median dark streak is continued a short distance backward 

 on the dorsum. The furrow has a peak directed forward in 

 the centre, and a backward and a forward (or OCJ) curve on 

 each side, and tlun passes to the ventral surface, where 

 it curves to the sides of the mouth aud ceases. A mcdiuu 



