18G8.] DR. W. BAIRD ON THE GEPIIYREA. 9J 



pars (Ulterior long'Uudinaliter sub cute albo Uneata ; pars cxscrtilis 

 granulis parvis ritbris deyise obtecta et rubra vitluta. 



Long. Corp. 1 unc, crass. \h lin. ; long, probosc. 2-; lin., crass. 

 5 lin. 



Ilab. Jamaica ; taken out of holes in coral-rocks {Mr. Gosse). 



B.M. 



The body of this worm is slightly arched or curved in form, is 

 somewhat cylindrical, rather slender, much longer than broad, and 

 is of a pellucid white colour, at first appearing smooth and shining, 

 but with the assistance of a lens showing itself to be partially covered 

 with minute light-brown-colourcd granules. These are more nume- 

 rous at the posterior extremity than on the rest of the body, except the 

 exsertile or proboscidal portion, which is thicklj- covered with small 

 reddish-brown granules and here and there a stain of reddish-brown 

 hue. The upper half of the body is the smoothest, and is marked 

 by a series of longitudinal white lines showing under the integument, 

 and which disappear at about half the length of tbe body. 



10. Phascolosoma albo-lineatum, sp. nov. 



Corpus subcylindricnyn, arcuatum, siibpelhtckhim, in medio punctis 

 sou granulis minimis sparse obsitum, extremiiatibus utrinqiie sub- 

 attenualis, granulis niajoribus rubro-fuscis obtectis ; pars anterior 

 Icevis, sub cute longitudinaUter albo Uneata ; pars exsertiUs longa, 

 postice granulis parvis rubris, antice Icevis, rubra maculata, et 

 prope extremitatem lineis nigris cxilibus viginti circumdala ; pro- 

 boscis cirris curtis paucis violascentibus induia. 



Long. Corp. 1|- unc, long. part, exsert. I unc; crass, corp. in 

 medio 2 lin., crass, probosc. ^ lin. 



Hab. Philippine Islands (]\Ir. Cuming's Collection). B.jNL 



This species is much larger tlian the preceding, but resembles it 

 in many respects. The body is arched or curved in form, and is 

 somewhat translucid, especially tlie upper or anterior half, which is 

 smooth and shining to appearance, and is marked under the skin 

 with numerous longitudinal white lines. Under the lens the middle 

 of the body appears covered partially with very minute point-like 

 granules, which enlarge at each extremity and become more nume- 

 rous. The caudal extremity is conoidal, rather sharp-pointed, and 

 the granules are like raised warty projections ; the anterior extremity 

 is rather attenuated, the exsertile portion being of considerable 

 length, more than half the length of the body. It is covered at the 

 base witli numerous reddish-brown granules, is smooth on the ante- 

 rior portion, is marked with reddish-brown-looking stains, and near 

 the extremity is surrounded with about twenty very fine black rings, 

 eacli ring being composed of numerous very small spines. The pro- 

 boscis does not at first sight seem to be provided with any cirri ; 

 upon more attentive examination, however, they appear to be very 

 short, few in number, and of a violet hue. The only history we 

 have of this species is, that it was found in the Philippine Islands ; 

 but I should be disposed to consider, from its general resemblance 



