226 THE A-MPIIIXOMIDJ::, AniRODITID.'E, I'OLYNOID,!:, AND SIGALIONID.E 



Numerous elytra. On segments 1, 3, 4, 6, . . . 25, 28 et seq. to end of 

 body. 

 Agholoe, ClaparMe. 



Elytra entirely covering the body. 



A T-shaped branchial process on the cirriferous parapodia. 

 Lepid ASTHENIA, Malmgreii. 



Elytra not covering the body, except in very young specimens. 

 Notopodium rudimentary. 



Genus LEPIDONOTUS, Leach. 



Body short, more or less linear. Anterior part of prostomium 

 produced into the bases of the median and lateral tentacles. 

 Palpi smooth or with papillte in five longitudinal rows. Elytra, 

 twelve pairs, covering the dorsum entirely and occurring on 

 segments 1, 3, 4, 6, 8 et seq. alternately. 

 *L. SQUAMATUS, Linn. Size about 1 inch or more. 



Elytra entirely covering the body, conspicuously ciliate on outer 

 and posterior margin. 

 *L. CLAVA, Mont. Size 2 inches or more. 



Elytra not covering the body, except in young specimens ; to the 

 unassisted eye not ciliate. 



Genus MALMGEENIA, Mcintosh. 



Head somewhat pyriform, with the narrow end in front,:]: the 



median and lateral tentacles springing from the front, as in 



Lepidonotus. Eyes large, nearly forming a square. 

 Palpi, tentacles, and cirri smooth. 



Segmental eminences fairly developed, but without papilltTe. 

 Elytra, fifteen pairs, smooth, with the exception of a small group of 



papillae at the anterior curve. 

 Dorsal chatas translucent, short, and with faint spinous rows. 

 Ventral chaetJB translucent, with rather short distal regions, and 



five rows of spines. The tip hooked, and a secondary process 



beneath. 

 *M. castanea, Mcintosh. Size f inch. 



Elytra smooth. Keniform examples, with a small and somewhat 



triangular group of papillse near anterior curve. 

 Variously bordered with madder-brown. 

 M. ANDKEAPOLis, McIntosh. Size 1 inch or more. 



Elytra smooth. Eeniform examples, with a belt of microscopic 



papilhe along anterior border. A brown ring, more or less 



complete, on the anterior, and after the sixth and seventh 



becoming a V-shaped mark with a spot. 



t Mcintosh's figures do not indicate tliis. 



