34 DR. BAIRD ON THE APHEODITACEA. 



Sp. 5. SiGALioN Blanc HAKDi. 



Stbenelais Blanchardi, Kinherg, Fregatten Eugenies Resa, p. 28, tab. 8. 



figs. 37a-37h. 

 Sab. Valparaiso, Kinherg. 



Sp. 6. SiGALioN ociJLATUM, Feters, Monatsbericht Akad. Wissen- 

 scliaft. Berlin, 1854, p. 610 ; Arch, fur Naturg. 1855, p. 38. 

 Stbenelais oculata, Kinherg, Fregatten Eugenies Resa, p. 29, tab. 8. 



figs. 39, 39b-39h. 

 Hah. Mossambique, Peters. 



Sp. 7. SlGALION L^VE. 



Stbenelais Isevis, Kinherg, Fregatten Eugenies Resa, p. 29, tab. 8. figs. 



40, 40b-40g. 

 Hah. Island of Eimeo, Pacific, Kinherg. 



Sp. 8. SiGALiON LiMicoLA, Ehlers, Borstenwurmer, i. p. 120, tab. 

 4. figs. 4-^7, tab. 5. figs. 1-10. 

 Hah. Quarnero, Adriatic, Khlers. 



Sp. 9. SiGALION AECTTJM ? 



Apbrodita arcta, Dalyell, Powers of Great, ii. p. 170, tab. 24. fig. 14. 

 Hab. Coast of Scotland, Dalyell. 



Sp. 10. ? SiGALiON PEEGAMENTACEFM, Gruhe, Annulatu Oerstedi- 

 ana, p. 24. 

 Hab. Santa Cruz, West Indies, Oersted. 

 Grrube refers this species, with doubt, to the genus Sigalion. 



Sp. 11. Sigalion Blainvillii, Costa, Ann. 8c. Nat. 2nd series, 

 xvi. p. 269, tab. 11. figs. 1, 1«-1^. 

 Hal. Grulf of Naples, Costa. 



Genus II. Thalenessa. 



Sigalion, Kinherg, non Aud. 8f Edwards. 



Cephalic lobe broad anteriorly ; no tentacle ; antennae two, 

 very short, placed on the anterior margin of the cephalic lobe ; 

 eyes 2, distant ; compound setae bidentate ; simple setae serrate ; 

 elytra corering the back, with ramose fimbriae on the margin. 



Sp. 1. Thalenessa Edwaedsi. 



Sigalion Edwardsi, Kinherg, I. c. p. 387} and in Fregatt. Eugen. Resa, 

 p. 30, tab. 9. figs. 41, 41 a-41 h, t. 10. f. 63. 



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

 Kinherg. 



