MONOGKAPH Or THE AMPHINOMACEA. 239 



torn. XX, p. 156, 1830 ; Cuvier, M.-Edwards, Guerin, Grube, Van 

 der Hoeven, Cams, Schmarda, Ehlers, Quatrefages. 



Hipponoa, Audouin S^ M.-Edwards, Littoral de la France, ii. p. 128; 

 M.-Edwards in Lamarck, Costa, Ann. Sc. Nat. 1841. 



Hipponoe, Audouin Sf- M.-Edwards, Littoral de la France, ii. p. 117. 



The worms belonging to this genus do not appear to have 

 been studied with care. Their eyes are four in number, though 

 M. Quatrefages distinctly asserts that the animals have none. 

 (" Caput oculis destitutum," I. c. p. 410.) MM. Audouin 

 and Milne-Edwards do not mention their eyes at all ; nor does 

 there seem to be any indication of them in any of the figures of 

 the only species described by them. On the abdominal surface, 

 where, in the Amphinomidse, the second or ventral series of feet are 

 placed, are a series, on each side of the body, of what Audouin and 

 M.-Edwards called pores. No notice is taken by these authors of 

 any appendages connected with them ; and M. Quatrefages, in his 

 description of the only species known to him, calls these pores 

 " depressions," and says, they are "destitute of setae or hooks." 

 ("In abdomine remi inferi loco, depressio quaedam setis unci- 

 nisque destituta," I. c. p. 410.) 



These pores or depressions appear to me to be in reality 

 organs of apprehension, for at the bottom of each are a number 

 of short fleshy looking hooked or slightly uncinate spines. The 

 setae of the feet are all alike, subulate, slender, simple. They 

 possess only one cirrus. 



Sp. 1. Hipponoe Gaudichaudi. 



Hipponoe Gaudichaudi, Audouin ^M.-Edwards, Ann. Sc. Nat. 1st series, 

 torn. XX. p. 159, tab. iii. f. 1-5, 1830 ; Cuvier, Regne Animal, 2nd 

 edit. torn. iii. p. 199, 1830; Guerin, Iconog. R. An. (texte), Annelides, 

 p. 8, tab. iv. bis. f. 3-3a-3d (copied from Ann. Sc. Nut.) ; M.-Ed- 

 wards, Regne Anim. edit. Crochard, tab. viii. f. 4, 4a-b, Littoral de la 

 France, ii. 239 (note); Grube, Famil. der Annelid, p. 41; Van der 

 Hoeven, Handb. der Zoologie, i. 231 ; Cams, Handb. der Zoologie, ii. 

 p. 435; Quatrefages, Hist. Nat. Anneles, i. 410; Valenciennes, MS. 

 in Mus. Paris. 

 Hipponoa Gaudichaudi, M.-Edwards, in Lamk. An. s. Vert. 2nd edit. 



torn. V, p. 574. 

 Hab. Port Jackson, Gaudichaud fide Audouin Sf M.-Edwards ; 

 Madeira, and amongst barnacles on a log of timber near PMadeira, 

 Masson (Mus. Brit.) ; concealed in valves of Lepas fascicularis, 

 in lat. S. 16° 0', long. W. 5° 0', Capt. Baker {Mus. Brit). 



Head small ; eyes four, small, placed near to each other. Tentacle 



