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



6. ASPIDOSIPHON L^VK. 



Aspidosiphon Iceve, Quatrefages, I. c. p. 609, t. 20. f. 23, 24. 

 Hab. Indian seas? {Quatrefages). 



7. Aspidosiphon cumingii, sp. nov. (PI. XI. fig. 2.) 



Corpus cylindricum, fuscum, antice denxissime, posfice paululvm 

 verrucosum, in medio rugosum et circulariter striatum ; scu- 

 tellum anterius subellipticum, brunneum, longitudinaliter sulcatum, 

 posterius centrifuge sulcatum, sulcis dichotomis ; proboscis brevis, 

 cylindrica, gracilis, rugosa, fasciata. 



Long. corp. 3 unc, lat. 7 lin. ; long, probosc. 8 lin. 



Hab. Philippine Islands {Cuming). B.M. 



This is the largest species I have seen. Anteriorly it is densely 

 granularly tuberculated for nearly an inch in length, posteriorly for 

 only a very short distance. In the middle the body is circularly 

 striated and longitudinally ribbed, as it were, with pellucid ribs. It 

 is of a brownish colour, much deeper at the two extremities, and 

 marked with scattered granulations. The anterior scutellum is of a 

 somewhat oval or elliptic shape, broadly sulcated longitudinally, 

 near the proboscis tubercularly granulated, and at a short distance 

 from where it terminates on the body it is keeled. The posterior 

 scutellum is circular, is marked by the same kind of sulci as the 

 anterior, but radiately disposed and dichotomously divided towards 

 the external margin. It is separated from the lower part of the 

 body by a sharp keel which surrounds it. The proboscis is rugose, 

 slender, and short, is of a light colour at its two extremities, and 

 peculiarly marked in the middle with a broad band of a deep 

 brown. 



8. Aspidosiphon trtjncatdm. 



Phascolosoma truncatum, Keferstein, Nach. kbn. Gesell. Got- 

 tingen, 1866. 



Phascolosoma (Asjndosiphon') truncatum, Keferstein, Zeitsch. f. 

 wissensch. Zool. Band xvii. p. 50, t. 6. f. 15-18, 186/. 



Hab. Panama {Agassiz fide Keferstein). 



9. Aspidosiphon radiatum. 



Phascolosoma radiata. Alder, Ann. & Mag. Nat. Hist. 3rd ser. 

 v. p. 75, t. 5. f. 4-6, 1860. 



Sipunculus {Cryptosomum) radiafus, Quatrefages, /. c. ii. p. 629, 

 1865. 



Hab. Shetland Isles, in shells of Aporrhais {Barlee fide Alder). 



Genus 2. Pseudaspidosxphon, Baird. 



Corpus gracile, duabus opacitatibus, scutella simulantibus, in- 

 structum. Extremitas posterior conica, centrifuge radiata; 

 e.vtremitas anterior, scutello destituta, opaca. Cetera ut in 

 Aspidosiphone. 



