DR. BAIBD OK THE APHRODITACEA. 35 



Genus III. Leakira, Kinherg, I. c. p. 388. 

 Cephalic lobe rounded, receiving the 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. Leanira QuATBEFAaEsi, Kinherg, I. c. p. 388, and iuFre- 

 gatt. Eugen. Mesa, p. 30, tab. 9. figs. 42, 42 a-42 h, tab. 10. 

 fig. 64. 

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

 Kinherg. 



Sp. 2. Leanira stellifeba. 



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



Sigalion stelliferum, Sars, Forhand. Vidensk. Selsk. Christiania, 1861, 



p. 51. 

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

 Hah. Coasts of Norway and Sweden, Miiller, Sars, and Oersted. 



Genus IV. Psammoltce, Kinherg, I. c. p. 388. 

 Cephalic lobe anteriorly produced, and forming the thick base 

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

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

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

 their margin. 



Sp. 1. Psammoltce Herminije. 



Sigalion Herminiae, Aud. Sf Edw. Littoral de la France, ii. p. 107, tab. 



1 A. figs. 1-6. 

 Hah. Hochelle, 3L d'Orhigm/. 



Sp. 2. PsAMMOLYOE Petersi, Kinherg, I. c. p. 388, and in Fregatt. 

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

 Hah. Mossambique, G. v. Duhen. 



Sp. 3. Psammoltce flava, Kinherg, I. c. p. 388, and in Fregatt. 

 Eugen. Mesa, p. 31, tab. 9. figs. 44, 44 a-44 h. 

 Hah. Eio Janeiro, Kinherg. 



Genus V. Conconia, Schmarda, Neue wirhell. Thiere, ii. p. 150. 



Segments of body numerous ; elytra on 2ud, 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* 



