64 EULALIA IMBKICATA. 



gently dilating behind the head, continuing for a long distance of nearly equal calibre, 

 and again diminishing gently towards the attenuated tail. The segments are distinctly 

 marked, and are flanked by a series of lanceolate lamellae (cirri) of a deeper yellow 

 than the rest of the body, and which become ovato-lanceolate in spirit. The tail is 

 terminated by two rather short baton-like cirri, which are flattened dorsally and 

 ventrally. In preservation the body is rounded dorsally, and slightly flattened 

 anteriorly on the ventral surface. In life it is coloured throughout of a pale yellow, 

 with three rows of black (or greenish, De St. Joseph) spots on the dorsum of the body. 

 The lateral rows commence on the first segment, and the central about the fourth. 

 These spots are arranged in a regular manner, the central being on the intermediate 

 narrow fold, or pseudo-segment, at the junction, and the lateral just behind the attach- 

 ment of the foot on each side, so that they form a triangle. The under- surface is 

 pale yellow, without spots anteriorly and posteriorly, but towards the middle it is 

 marked with a faint row of dark grains at each side. 



The proboscis is irregularly covered anteriorly by obtusely conical papillae, and has 

 a crown of fourteen papillae at the " stomach" (De St. Joseph). 



The foot (Plate LXVII, fig. 13) has dorsally an ovato-lanceolate cirrus, probably 

 nearly lanceolate in life. The setigerous process is comparatively short, slightly bifid, 

 and bears a series of short, pale bristles. The shaft has only a slight curvature, chiefly 

 marked just below the enlarged end, which is rounded when viewed antero-posteriorly, 

 bevelled and hoof -like when seen laterally. The terminal process is short, translucent, 

 and rapidly tapers to a point (Plate LXXVII, fig. 4). The serrations on the edge are 

 so minute that they are observed with difficulty. 



The inferior cirrus is also ovato-lanceolate, the tip extending fully as far as the 

 setigerous process. 



The muscular fibres are firm and tough in the preparations, presenting in some the 

 appearance of the glandular secretion of Panthalis. 



Reproduction. — De St. Joseph found that the females (in spring?) were distended 

 Avith greenish eggs ; whereas the males, when filled with sperms, have the two posterior 

 thirds of the body dull reddish. 



This seems to be a widely distributed species, but is not common in the north. 



Dr. Allen kindly sent me a drawing of a specimen — his " Eulalia ? brick-red " — of 

 a general pale pink, with rather more than the middle third of the body of a reddish 

 hue (Plate XLIII, fig. 8). No specks were visible. Nothing distinctive occurred about 

 the head, which resembled that of Ewnida, and the caudal cirri were lanceolate and 

 narrow, inclining to subulate, as in Eumida. The precise relationships of this form, 

 therefore, are in need of further investigation. 



6. Eulalia tmbeicata, Elders, 1875. Fig. 42, head. 



Specific Characters. — Head somewhat massive, pentagonal, eyeless. Median tentacle 

 in the angle at the nuchal border of the head. 



