| OCR Text |
Show 1868.] DR. W. BAIRD ON THE GEPHYREA. 93 to the North-American Boundary Survey under Col. Hawkins. It may possibly be only a variety of the preceding species. 14. PHASCOLOSOMA PLANISPINOSUM, sp. nov. Corpus sacciforme, albo-griseum, granulis brunneis minutis oblectum, granulis ad extremitatem posticam in spinis latis mutatis; pars exsertilis partem tertiam corporis eequans, spinis latis, majoribus, brunneis obtecta ; tentaculis retractis. Long. corp. 6 lin., part, exsert. 4 lin. ; corp. crass, usque ad 3\ lin. LLab. ? (Mr. Cuming's Collection). B.M. The body of this species is of a light greyish colour, deeper at the two extremities, where the minute granules with which the body is covered are replaced by flat sharp-pointed spines, standing out nearly erect from the skin. The exsertile portion is particularly marked in this manner, the spines being numerous and larger than at the posterior extremity. The shape of the body is very similar to that of Sipunculus (Phascolosoma) genuensis of Blainville, but differs in being very much smaller and having the exsertile portion, comparatively speaking, longer, and being very rough with the flat spines. Unfortunately we have only one specimen, which was collected by the late Mr. Cuming, but no habitat was attached to it. 15. PHASCOLOSOMA MULTITORQUATUM. Sipunculus (Phymosomum) multitorquatus, Quatrefages, I. c. ii. p. 621, 1865. Hab. Guettary (Quatrefages). 16. PHASCOLOSOMA SPINICAUDA. Sipunculus (Phymosomum) spinicauda, Quatrefages, I. c. ii. p. 621, 18G5. Hab. Barcelona (Quatrefages). 17. PHASCOLOSOMA GUTTATUIM. Sipunculus (Phymosomum) guttatus, Quatrefages, /. c. ii. p. 621, 1865. Hab. Red Sea (Quatrefages). 18. PHASCOLOSOMA ORBINIENSE. Sipunculus (Phymosomum) orbiniensis, Quatrefages, l.c. ii. p. 622, 1865. Hab. American seas (M. d'Orbigny). 19. PHASCOLOSOMA PLICATUM. Sipunculus (Phymosomum) plicatus, Quatrefages, /. c. ii. p. 622, 1865. Hab. ? Indian seas (Quatrefages). |
