90 DR. W, BAIRD ON THE GEPHYREA. [Feb. 13, 



body is not verrncose, but is roughened with numerous, close-set, 

 circular striae near the anterior extremity;, showing a few scattered, 

 flattenedJooking warty granules. The exsertile portion of the body 

 is attenuated, and circularly striated ; but the extremity or proboscis 

 is withdrawn in the only specimen we possess, so that the tentacles 

 cannot be seen. This was found lodged in some of the crevices of 

 a mass of a species of tubicolous Annelidcs belonging to the genus 

 riacostegus, which formed a portion of the collection of Dr. Krauss ; 

 it was dry, but was afterwards moistened and put into spirits. 



7. PriAscoLOSOMA NiGRiCEPS, sp. nov. (PL XI. figs. 1, P.) . 



Corpus fusiforme, antice paiilo attenuatum, postice rotundatum, 

 granuUs fuscis numerosis circtilariter obsitvm, parte ant lea nigra, 

 qranuUs nigris multo majorihvs instrueta ; pars exsertilis re- 

 tracta. 



Long. Corp. fere 2 unc, crassitud. corp. med. h unc. 



Ilab. St. Thomas's, West Indies (il/r. Cuming'^.); Jamaica (M;-. 

 Gosse) ; Chili {Mus. Brit.). B.M. 



The body is of a fusiform shape, slightly attenuated posteriorly, 

 much more so anteriorly, and thicker about the centre. It is covered 

 with numerous, rather small, rounded granules, of a brown colour, 

 with a small white point in the centre, but which, at the anterior 

 extremity, become much larger, rather square-shaped, and so dark 

 as to give the whole of the anterior part, and what can be seen of 

 the exsertile portion, a deep black hue. The proboscis itself, in all 

 the specimens possessed by the ^luseum, is withdrawn, so tliat I 

 could not ascertaiu the appearance of the tentacles. The body, with 

 the exception of the granules and the anterior portion, is of a light 

 colour. 



8. Phascolosoma ^thiops, sp. nor. 



Corpus vtriculare, totum nigrum, gramills parvls, in extremltailhvs, 

 anterlore presertlm, majorlbus, ohtecium, extremltaie eaudall co- 

 noldea, antlca paulo attenuata ; pars exsertilis hrevls, crasslus- 

 cula, splnulls iivmerosls parvis cbslta ; ientactila brevla, nvme- 

 rosa. 



Long. corp. 14 lin., probosc. 3 lin. ; crass, corp. in medio 4 lin. 



Hah. St. Vincent's, West Indies {Rev. J. GmUingl). B.M. 



The whole body is of a deep black colour, and it is covered with 

 numerous small black granules, which, however, become larger at 

 the extremities, especially anteriorly. The posterior extremity is 

 conoidal, and the anterior is rather attenuated. The exsertile por- 

 tion is also black, and is roughened with numerous small black spines. 

 The cirri of the proboscis are short and numerous. 



9. Phascolosoma perlitcens, sp. nov. (PI. X. figs. 2,2*). 



Corpus subcyllndricmn, arcitatiim, elongaium, postice paulo attenua- 

 tum, pellucldo-alhldum, granvlls minimis sparsis obsltum, dhnidia 



