OF PLYMOUTH AND THE ENGLISH CHANNEL. 229 



f H. KETICULATA, ClapaHcle. Size nearly 1 incli. 



Elytra marked with black spots, inargiu richly ciliate. 

 Median tentacle 2h times the length of the lateral. 

 H. Haliaeti, Mcintosh. 



No perfect specimen known. 

 tH. TOFvQUATA. Claiiarklc. Size \ inch. 



Sixteen elytra. Margin smooth, except the first four. 

 f H. SARNiENSis, Lanhestcr. Size to 2 inches. 



Twenty elytra. Lateral tentacles as long as prostomium, median 

 tentacle three times as long. 

 Genus EUNOA, Mahngrcn. 



Lateral tentacles arising under tlie median, below and slightly 

 internal to the peaks of the head. Palpi, with six rows of short 

 cilia. Eyes large, visible from the dorsum. 

 Elytra, fifteen pairs, occurring on segments 1, 3, 4, 6, . , . 22, 25, etc. 

 External aperture of the segmental organs indicated by blackish 

 pigment. No papillae. J 

 *E. NODOSA, Malmgren. Size 2|- inches. 

 Prostomium cleft to half its length. 



Eyes four, large, lateral, the anterior about the level of a median 

 transverse line. 

 E. TRITONI, Mcintosh. Size nearly 1| inches. 

 Prostomium cleft to form two minute lobes. 

 Eyes four, moderate size, equal, the four median as regards length. 



Genus EVAENE, Malmgren. 



Body rather small, ovate oblong, attenuate posteriorly. 



Lateral tentacles fixed under the median, prostomium deeply 



incised in front, and with prominent lateral peaks. 

 Eyes four, generally large, the anterior pair on the projecting 



lateral region, the posterior in front of the nuchal collar and 



widely separated. 

 Palpi densely covered with minute papillae. 

 Elytra, fifteen pair, spinulose, ciliated or smooth at the edge. 

 Dorsal bristles shorter than the ventral, and with wide rows of 



spines ; ventral bristles very long, with minutely bifid tips. 

 Segmental papillae well marked, but not long. 

 *E. IMPAR, Johnston. Size 1 inch. 



Elytra, with densely ciliated margin. More posterior portion 



papillose, often increasing to spines, and on the border large 



pyriform or globular papillae. 



X Segmental papillfe are described by Mcintosh for both the species assigned to this 

 genus. 



