HERMIONE HYSTRIX. 



265 



1836- 

 1840. 



)> 

 1842. 

 1843. 

 1851. 



1856. 



1857. 



)) 

 1858. 



}? 

 1861. 

 1864. 



1865. 



868 

 875 

 884 



888 

 890 



. Eermione hystricella, De Quatref. Reg. an. illust., pi. xix, f. L 



„ hystrix, Grube. Actin., Echin., u. Wiirmer, p. 88. 



Aphrodita hystrix, Johnston. Ann. Nat. Hist., iv, p. 370, v, f. a — e ; and v, p. 305. 

 Halithea hystrix, Delle Chiaje. Descrizione, pp. 57 et 105, tav. lviii, f. 10. 

 Aphrodita hystrix, Oersted. Ann. Danic. Consp., p. 11. 



„ ,, Grrube. Fam. der Annel., p. 36. 



„ „ Thompson. Fauna of Ireland (partim ?), p. 273. 



,, mediterranean, O. Gr. Costa. Fauna d. Reg. d. Napoli, Ann el., p. 8, tav. ii, f . 1 — 1 e. 



Hermione hystrix, O. Gr. Costa. Annel. di Napol., p. 5, Tav. i, f. 11 — 14, and Tav. ii, f. 1. 



,, „ Kinberg. Fregatt. Eugen. Resa, p. 4, tab. 2, f. 4. 



„ hystricella, Kinberg. Ibid., p. 5, tab. 2, f . 1. 



Aphrodita hystrix, Danielssen. Nyt. Mag. f. Naturvid, Bd. xi, p. 49. 



„ „ Grrube. Die Insel Lussin, &c, p. 77. 



Hermione hystrix, De Quatref. Hist. nat. d. Annel., vol. i, p. 206, pi. vi, f . 9 — 14. 



„ Kinbergi (?). Ibid., p. 209, pi. vi, fig. 16. 



„ hystrix, Baird. Proceed. Linn. Soc, vol. viii, p. 178. 



„ „ Johnst. Cat. Brit. Ann., p. 106, pi. ii, f. a — e (a repetition of former). 



„ „ Claparede. Annel. Chetop. d. Nap., p. 48, pi. i, f. 2. 



„ „ Marion and Bobretzky. Ann. Sc. Nat., 1875, p. 3. 



„ „ V. Cams. Faun. Med., p. 199. 



,, „ Harvey Gribson. Vermes Liverp., p. 147. 



„ „ De Saint- Joseph. Ann. d. Sc. nat. (7), vol. v, p. 146. 



,, „ Malaquin. Ann. Boulon., p. 14. 



Habitat. — A southern form, 1 abundant at a depth of fifteen to twenty fathoms off 

 St. Peter Port, Guernsey, amongst debris of shell-gravel, dead oyster- and mussel-shells, 

 and occasionally at various parts of the southern coast of England and Ireland. It is 

 common in the Mediterranean. The German exploring ship ' Gazelle ' procured it at 

 Soleton Bank. It ranges to eighty fathoms. 



On the whole it is partial to shell-debris, gravel, and similar regions, and thus fre- 

 quents rougher ground thanyi. aculeata (Horn ell). 



The smooth head (Plate XXIV, fig. 8) is rounded, and the posterior fillet which 

 bounds it is considerably overlapped in the preparations by the peduncles of the first 

 scales. This fillet appears to bear no papilla or homologue of the scale-peduncle exter- 

 nally. The median ridge which runs forward to and ends in the base of the tentacle is 

 slightly marked, The ovoid lateral swellings are more prominent than in Laetmatonice 

 filicornis. The ocular peduncles are somewhat clavate, with rounded tips, and each has 

 dorsally a well-marked black eye, and just in front of it a larger one looking forward and 

 downward. The facial tubercle has numerous globular or slightly ovate papillae — a few 

 being longer (elongate-ovate). 



All except the basal region of the palpus is " ciliated " with spike-like papillae as in 

 the foregoing species, this being a character apparently subject to little variation. The 

 tentacle, the base of which possesses scattered globular papillae, has a peculiarly crenate 

 outline, slightly enlarged at the tip, and with the clavate terminal process (Plate XXXVII, 



1 The notion that it occurs " all over the British area w (Dr. Benham) does not accord with our 

 experience. It is a southern form. 



