238 EUPHROSYNE ARMADILLO. 



Costa (?), E. laureata, D.Ch., E. mediterranea, Grube, and E. racemosa, Ehlers). So far 

 as the description of Ewphrosyne racemosa of Ehlers goes there is little to distinguish 

 it from E. foliosa, for it has jet to be proved that the variation in the number of the 

 branchiae (eight to nine in E. foliosa and five and six in E. racemosa) is not due to age, and 

 that the position of the middle cirrus is not due to the same cause. 



Grube, who examined the species in the Parisian Museum, found that the median dorsal 

 cirrus did not extend between the fourth and fifth branchial process, as in the figure of 

 Audouin and Edwards, but between the second and third, as is also the case in Ehlers' 

 E. racemosa. Both from the structure of the branchiee and the structure of the bristles 

 Grube concludes that the E. racemosa of Ehlers is synonymous. Grube was likewise of 

 opinion that the E. laureata and E. myrtosa of Savigny agree with the E. foliosa of 

 Audouin and Edwards. In all probability, therefore, the nomenclature might be consider- 

 ably simplified. The E. Audouinii, Claparede, as given by Carus, 1 is probably referable to 

 the common species (E. foliosa). This seems to be the dull reddish species figured by 

 Delle Chiaje (1841). At Naples the common name is " Ti veggo rosso senza spine." 



The E. mediterranea of Grube 2 is the same species, though Horst 3 thinks the tips of 

 the branchige clavate rather than foliate. Baron de Saint- Joseph, who agrees in regard to 

 the association of E. racemosa, E. Audouinii, and E. mediterranea with the present species, 

 found that at Dinard specimens of 12 to 15 mm., and having thirty segments, were 

 distended with ova. The Euphrosyne intermedia, 1888, of this author, rests mainly on 

 the presence of longer forms of bristles — amongst the dorsal and ventral series — haying 

 the axial oil-like contents. He thinks they are offensive and contain poison. In all 

 probability this is only a variety of E. foliosa with longer bristles. 



.2. EUPHROSYNE AEMADILLO, Sars, 1851. 



Specific Characters. — Caruncle extending to the anterior border of the fifth segment, 

 with a proportionally long Particulate tentacle between the dorsal eyes. Branchige divided 

 dichotomously, and terminating in lanceolate processes. The bristles are of considerable 

 length, the bifid forms having a short spur and quite smooth, the serrated kinds having 

 the longer arm somewhat flattened, only slightly, though distinctly, curved, the serrations 

 extending along opposite parts of the fork. 



Synonyms. 



1850. Euphrosyne armadillo, Sars. Keise i Lofoten og Finmark. Nyt. Mag. f. Naturv., B. vi, 



p. 211. 

 1861. „ „ Forhandl. Vidensk.-Selsk. (Aar, 18.60), vol. viii, p. 55. 



1876. „ lanceolata, Mcintosh. Trans. Z. S., vol. ix, p. 395, pi. lxxi, fig. 1. 



1886. „ armadillo 3 Langerhans. Zeit. f. w. Zool., vol. xl, p. 253. 



1 < Fauna Medit.,' p. 207, 1884. 



2 ' Arch. f. Naturges./ 1863, p. 38. 



3 < 



Notes from the Ley den Museum/ vol. viii, 1886. 



