96 Prof. M'liitosli's Notes from the 



strong gular bristles spring is removed from the base of the 

 great fang by nearly its own length, the tuft curving to the 

 tip of the fang and then above it. Whilst the posterior 

 outline of the neck (which is slightly bent backward) is 

 smooth, that in front has the bold prominence of the gular 

 tuft with the long smooth sinus running to the fang above 

 it. The crown is not high and has four teeth above the 

 great fang, the first starting at an angle to the great fang. 

 The neck is obliquely and the shaft longitudinally striated. 



The seventh form has been long known as Clymene ehiensis, 

 Audouin and Edwards, and is apparently near Leiochone. It 

 M'as dredged both in Zetlandic Avaters by Dr. Gwyn Jeffreys 

 and off the coast of Durham by Prof. G. S. Brady, and a 

 similar form was obtained in Loch Alsh by Mr. Assheton. 



The anterior end forms a smoothly rounded and somewhat 

 pyramidal or clavate mass with a pointed frontal process — 

 the prostomium, peristomium, and perhaps the first (unarmed) 

 segment entering into its composition, the two former being 

 separated by a ring from the latter. Dorsally a narrow 

 median keel commences at the ring just mentioned and 

 passes forward to the mid-frontal process. On each side of 

 the keel is a sharp vertical ridge or lamina which accom- 

 panies it to the frontal process, where it ends, a frontal view 

 presenting the ends of the ridges on each side of the frontal 

 process, a deep groove (probably the nuchal) separating 

 them and debouching on each side of the frontal process. 

 This arrangement recalls the condition in the cephalic plate 

 of other forms. In the fresh example a dense series of 

 minute dark brown eyes are visible from the dorsum on each 

 side of the snout, but disappear by passing under the pointed 

 tip, where they extend forward to the apex. These vanish 

 in specimens long preserved in spirit. Similar groups of 

 eyes are observed in the aberrant Brancliiomahlane vincentii 

 of Langerhaus* as lately described by Dr. Ashworth f. 



The mouth opens in the usual position ventral and poste- 

 rior to the frontal process. The body is of considerable 

 length, viz. 5-6 inches, rounded, with a distinct raid-ventral 

 ridge which is continued backward to the edge of the anal 

 funiiel and has twenty-two bristled segments and four devoid 

 of bristles posteriorly. The first bristled segment is about a 

 third longer than the cephalic lobe in a good preparation, and 

 bears about a fifth from its anterior border a small tuft of 



* Nova Acta Caes. Leop.-Car. Bd. xlii. no. 3, p. 116, figs. 21 a &c. 

 f Proceed. Roy. Soc. Edin. vol. xxxii. p. 62, with plate (1912). 



