Gatty Marine Laboratory ^ St. Andrews, 169 



than in the typical species and their rows of spines much 

 closer, and the latter character also distinguishes tiiem 

 from E. Nonnani. 'J'iie ventral bristles (Pi. III. fig. 12) 

 approach those of the latter species more closely than tliose of 



Evarne Johnston i, being somewhat shorter than those of 



E. Norinani, which, again, have stronger tips than those of 



E. Johnston i. 



No scales are present. In all probability they approach 



those of E. Xormani. 



By the lengthening of the tips of the ventral bristles and 



their general slenderness this species and E. Johnstoni come 



near Antino'e and allied forms. 



3. On the British Species of Pholoe. 



To judge from the literature at present available, three 

 species of Pholoe seem to be found in Britain, viz. P. minuta, 

 Fabr., P. inornata, and P. eximia, G. Johnston, As indi- 

 cated for many years, however, it would appear that the two 

 latter merit only the position of varieties of the former. 



In the typical British example the head is somewhat 

 rounded and bears a subulate median tentacle with a itw 

 papilla3 on its surface. Two (connate) eyes occur on each 

 side, the anterior being the larger. Two short tentacular 

 cirri, also with minute papilite on the surface, are placed 

 laterally. Two prominent papillai project behind the eyes 

 and sometimes overlap them. The palpi are rather massive 

 tapering organs with a smooth surface. The body is small, 

 composed of 45 to 70 segments, and reaching about | inch in 

 length as a maximum *. Posteriorly are two slender caudal 

 styles. It is more tapering posteriorly than anteriorly in 

 small specimens. The dorsum is slightly convex, the ventral 

 surface flattened, with a median groove in the preparations. 

 In life the dorsum is of a pale pinkish colour, grained with 

 brownish on some of the scales. A reddish mark occurs in 

 front with a dark greyish patch behind. As Dr. Johnston 

 observes, some are of a yellowish-brown colour, dusky along 

 the sides. The scales are ovate or reniform, with a series of 

 cilia having moniliform tips along the outer border, and more 

 sparsely along the posterior edge, while the tissue, especially 

 at the inner region, is areolated. The dorsal lobe of the foot 

 forms a prominent process, with a convex margin externally 

 for the dense tuft of bristles, which are slender, tapering, and 

 spinous. Ventral lobe an oblique cone, with numerous 



* De Quatrefages mentions one of 68 segments and 45 pairs of scales. 



