EULALIA (PTEPOCIPRUS) MACROCEROS. 61 



foliaceous process. The dorsal of the third pair is shorter than the preceding, and the 

 ventral is small (De St. Joseph). 



Body abont an inch or two in length, slightly tapered anteriorly, and more so 

 posteriorly, where the great elongation of the feet give a character to the region. Colour 

 straw-yellow to pale-brown, with a dorsal bar going to the bases of the feet. Dorsal 

 cirrus lanceolate, with a pointed tip. Setigerous lobe tapered a little towards the bifid 

 extremity. Bristles with the end of the shaft slightly dilated and bevelled, with a minute 

 spike or two at the tip, and a single oblique line. The somewhat long terminal piece 

 tapers to a fine tip, is obliquely striated, and distinctly serrated. The ventral cirrus is 

 slipper-shaped, lanceolate at its tip, and extends a little beyond the setigerous region. 



Synonyms. 



] 860. Phyllodoce (Eulalia) macroceros, Grube. Arch, f . Nat., Bd. xxvi, p. 82, Taf . iii, f . 4. 



„ „ „ „ idem. Ausflug nach Triest, p. 141, Taf. iii, f. 4. 



1864. „ „ „ Bhlers. Borst., i, p. 165, Taf. vii, f. 6 -10. 



1868. „ (Pterocirrus) velifera, Claparede. Annel. Neap., p. 250, pi. xvii, f. 2. 



1874. „ „ macroceros, Marenzeller. Sitz. Akad. der Wiss. Wien, Bd. lxix, p. 424, 



sep. abdr., p. 18. 



1875. „ „ „ Marion & Bobretzky. Ann. So. Nat., 6 e ser., t. ii, p. 63. 

 „ „ „ velifera, idem. Ibid. 



1888. „ „ „ De St. Joseph. Ibid., 7 ser., t. v, p. 300, pi. xii, f. 170—174. 



1897. Pterocirrus macroceros, Gravier. Bull. Sc. Fr. Belg., t. xxix, p. 308, pi. xvi, f. 15 ; pi. xx, 



f. 12; pi. xxii, f. 8, 9. 



1904. „ „ Allen. Journ. M. B. A., n.s., vol. vii, p. 223. 



1905. Eulalia „ ( — E. volucris, Ehlers, and Eracia volucris, Clap.), Grgeffe. Arbeit. Zool. 



St. Triest., xv, p. 325. 



1906. „ (Pterocirrus) macroceros, De St. Joseph. Ann. Sc. Nat., 9 e ser., t. iii, p. 225. 



Habitat. — Dredged off St. Peter Port, Guernsey, in 15 fathoms on shelly ground in 

 1868. Plymouth (Dr. Allen). 



Quarnero (Grube). Amongst nullipores and Bryozoa, at Triest (Marenzeller). 

 Common in the Gulf of Marseilles (Marion and Bobretzky), Mediterranean, Atlantic. 



Read (Plate LVIII, fig. 4) large and long in life; bluntly conical in spirit, with 

 two large circular black eyes, with or without lenses. The subulate tentacles are 

 comparatively large and long, the median (the longest) arising in front of the eyes. 

 They thus correspond with Claparede's Eulalia velifera, and differ from his E. marginata. 

 The first pair of tentacular cirri is normal in outline, but somewhat short. The second 

 has dorsally a subulate process of considerable length (extending to twelve segments, 

 De St. Joseph), whilst the ventral is foliaceous and lanceolate. This shows no striated 

 border as in E. limbata, Claparede, neither is the tentacular differentiation visible at 

 the posterior border. The whole forms, in spirit, a leaf-like process, a little more 

 opaque towards the posterior border. 



Body of a straw-yellow colour, or with brownish dorsal bars, slightly tapered 



