168 Prof. M'Intosli's Notes from the 



tvith a pale yellowish light, often extremely faint, and thus 

 in contrast with Hdrmothoe imhricata and Poh/noe scolo- 

 jjendri'na, in which the phosphorescence is more vivid. As a 

 rule Gatiyana occupies a position close to the mouth of the 

 long tube of the Amphitrite beneath large stones near low- 

 water mark, so that it is well protected from marauders, even 

 supposing they were attracted by its light. In the same way 

 its opportunities for alluring other animals are curtailed ; so 

 that the remarks formerly made in this connexion still hold. 



2. On a new Evarne (E. atlantica) from Rockall. 



A fragment of about fifteen segments of the anterior end 

 was dredged at Station III. A by the Royal Irish Academy's 

 expedition on 15th June, 1896. 



The head resembles that of E. impar, Johnst., in general 

 outline, but differs in having somewhat smaller eyes. The 

 tentacles and palpi also are similar, though the cilia on the 

 former and the minute papillge on the latter are less bold. 

 The cirri generally are a little more slender. 



The body is thicker and more massive than in E. impar 

 of the same size, and both dorsally and ventrally in the 

 preparation lias a pinkish skin-colour. The arrangement of 

 the bristles at the side of the body is more trim. No 

 nephridial papilla is observable, though the eminence is 

 distinct. In this respect it agrees with E. impar of the same 

 size, in which the papilla only becomes noticeable about the 

 twelfth bristled foot. In large examples it is evident on the 

 seventh bristled foot. 



The first foot (bearing the tentacular cirri) has a few short 

 bristles conforming to the dorsal type, though with somewhat 

 closer rows of spines. In the second foot the dorsal bristles 

 are longer and less curved than in E. impar, and while there 

 may be room for doubt concerning the proportionate distances 

 of the spinous rows, there can be none about the length of the 

 smooth portion at the tip, which is diagnostic of this form 

 and also of Evarne Normani. The present species difFei'S 

 from the latter again in the more tapering extremities of these 

 bristles and in the closer rows of spines {cf. figs. 11 and 15, 

 PI. III.). The spinous tips of the ventral series are some- 

 what longer than in E. impar, and in this respect approach 

 E. Normani. 



In the typical foot the lower lobe is more pointed and the 

 ventral cirrus longer than in E. impar, so that it projects as 

 far as the tip of the foot. The translucent dorsal bristles 

 (PI. III. fig. 11) are considerably longer and less curved 



