DE. BAIED OK THE APHRODITACEA. 35 



Genus III. Leaniba, Kinberg, I. c. p. 388. 

 Cephalic lobe rounded, receiving tlie tentacle in a mesial 

 groove; no antennae; palpi very long; eyes 2, placed near the 

 tentacle ; superior setae closely serrulate ; inferior setae slender, 

 compound, pectinato-canaliculate at the apex ; anterior elytra not 

 altogether covering the back ; no papillae. 



Sp. 1, Leaniea Quateefagesi, Kinberg, I. c. p. 388, and in Fre- 

 gatt. JEugen. Mesa, p. 30, tab. 9, figs. 42, 42 A-42 H, tab. 10. 

 fig. 64. 

 Hdb. Sea off the mouth of the Eiver Plate, South America, 



Kinberg. 



Sp. 2. Leaniea stellifera. 



Nereis stellifera, Muller, Zool. Dan. tab. 62. figs. 1-3. 



SigalioQ stelliferum, Sars, Forhand. Vidensk. SelsJc. Christiania, 1861, 



p. 51. 

 Sigalion tetragonum. Oersted, Fortegnelse, p. 7, tab. 2. 

 Sab. Coasts of Norway and Sweden, Milller, Sars, and Oersted. 



Genus IV. Psammolyce, Kinberg, I. c. p. 388. 

 Cephalic lobe anteriorly produced, and forming the thick base 

 of a long tentacle ; antennae none ; eyes 4 ? (2 ?) ; superior set* 

 simple, very slender, serrate ; inferior setae strong, bidentate ; 

 elytra not covering the middle of the back, with long fimbriae on 

 their margin. 



Sp. 1. Psammolyce HEEMiNiiE. 



Sigalion Herminise, Aud. 8f Edw. Littoral de la France, ii. p. 107, tab. 



1 A. figs. 1-6, 

 Hab. Eochelle, M. d'Orbigny. 



Sp. 2. Psammolyce Peteesi, Kinberg, I. c. p. 388, and in Fregatt, 

 Eugen. Besa, p. 31, tab. 9. figs. 43, 43 a-43 h. 

 Hab. Mossambique, G. v. Duben. 



Sp. 3. Psammolyce elaya, Kinberg, I. c. p. 388, and in Fregatt. 

 Fugen. Besa, p. 31, tab. 9. figs. 44, 44a-44h. 

 Sab. Eio Janeiro, Kinberg. 



Genus V. Cokconia, Schmarda, Neue wirbell. Thiere, ii. p. 150. 



Segments of body numerous ; elytra on 2nd, 4th, 5th, 7th, and 

 all alternate segments up to the 27th, and then on every suc- 

 ceeding segment to the end of the body ; dorsal cirri on all the 

 segments. Feet biramous ; setae of upper branch denticulate ; 



5* 



