470 SPHARODORUM CLAPAREDITI. 
ASCLEROCHEILUS INTERMEDIUS, De St. Joseph, 1894. Plate CX XXVIII, figs. 8 and 8a— 
bristles. 
Specific Characters.—Head devoid of pigment-specks, but similar to that of Sclerocheilus. 
Body similar in outline to that of Sclerocheilus, but the feet bear no cirri. The bristles of 
the first three segments are finer, and of a different form from those of Sclerocheilus1 The 
segmental organs, again, correspond in structure. The ova are greyish. 
SYNONYMS. 
1894. Lipobranchus intermedius, De St. Joseph. Ann. Se. nate, ( BER, th Sanu, foo Lis jol. w% 
fies. 146—147. 
1901. Asclerocheilus - Ashworth. Quart. Journ. Micr. Sci., pp. 294, 297. 
1914. . a Southern. Proc. Roy. Irish Acad., vol. xxxi, No. 47, p. 187. 
A ms Es Fauvel. Annél. Polych. Monaco, p. 238, pl. xxi, figs. 13—18. 
1922. Hf ie McIntosh. Ann. Nat. Hist., ser. 9, vol. ix, p. 14. 
Habitat —Between tide-marks and dredged in 1 fathom, Blacksod Bay, in the roots 
of tangles; Ballynakill Harbour, 1—3 fathoms, also in roots of tangles, and between tide- 
marks, Malahide, and other places on the west coast of Ireland (Southern). 
Distribution.—Dinard, France (De St. Joseph) ; Azores, 760 fathoms. 
It is a small species, measuring about 2 or 3 mm., the anterior end being distinguished 
by two rounded processes with a depression between. The body is somewhat fusiform in 
outline, slightly tapered anteriorly, and abruptly so posteriorly, with about twenty 
segments. So far as seen, no ventral cirrus is present, and no eyes. .The ventral 
hooks of the second segment (Plate CXXXVIII, fig. 8) have a marked curve backward 
(sickle-like) at the tip, and terminate in sharp, not attenuate, points. The upper bristles 
(Plate CXXXVIII, fig. 8a) of the second segment are capillary, with finely tapered, long 
points. The posterior bristles are more elongate. Apparently transverse rows of opaque 
glands occur posteriorly in each segment. 
FAMILY SPHARODORIDA. 
SPHARODORUM CLAPARDDII, Greef, 1866. Plate CXX XVI, fig. 4—bristle. 
Specific Characters—Two reddish-brown eye-specks on the buccal segment, and when 
the ‘“‘ stomach ”’ is everted these are carried with it. Body with six rows of papillee on the 
dorsum. Mature m April and September. 
SYNONYMS. 
1866. Spherodorwm Claparédit, Greef. Arch. f. Naturges., Bd. xxx, p. 338, Taf. vi. 
1914. FS 5 Southern. Proc. Roy. Irish Acad., vol. xxxi, No. 47, p. 89. 
‘5 i os Fauvel. Annél. Polych. Monaco, p. 97. 
1922. - He McIntosh. Ann. Nat. Hist., ser. 9, vol. ix, p. 19. 
1 An important memoir by A. and L. Dehorne on Selerochetlus minutus goes fully into the 
structure and relationships of this species, the nervous system, alimentary canal, and the nephridia 
being specially treated—chiefly from sections (Arch. Zool. Expér., t. liu, p. 61, Pls. 4—7 and text- 
fios., 1913). 
