New ffolollni rinH (if lite Gcaiis T(a'ii(0(j!/ras. 81 



closelv examined, their diflference in structure from that of 7\ diine- 

 (liiieiisls mi'/lit not l)e detected. Even if noted, it mi<i:ht be regarded 

 as having imly varietal signficance ; whilst, of course, such a specimen 

 would be quite useless for noting any peculiarities of the internal 

 anatomy. 



Bibliography. 



1. Jour. Roy. Micr. So... London, June loth, 1910. 



2. Ostergren, Das System dei' Synapliden (Vorl.HuHge Mittheilung), 



Ofv. K. A^et. Ak. Forhand., vol. Iv., pp. 111-120, Stock- 

 holm, 1S9S. 



?). H. L. Clark : The Ajiodous llolothurians. Smithsonian Con- 

 tributions, vol. xxx'V, 1907. 



4. C. Semper: Reisen im Archipel der Philippinen. Trsl. Teil 1, 

 Holothurien, Leipzig, 1868. 



o. Dendy, A.: Jour. Linn. Soc, vol. xxvi., No. 166, Holothurians, N.Z. 



G. Stimpson : Proc. .Acad. Nat. Sci., Philad., vol. vii.. 1856. 



7. Theel: Rep. Challenger Exped., Zool. vol. xiv. 



8. Ludwig : Holothurien in Eigebnis.se der Hamburger Maghaeli.s- 



chen Samnielreise, Lief. iii. 



DESCRIPTION OF PLATES. 



Plate TIL 



Photo-micrograph of portion of dorsal integument of Taenioc/i/rus 

 allaiii — to show arrangement of wheel ossicles in aggregations, 

 and sigmata scattered, . . . x 60. 



Plate TV. 



Fig. 1 — Wheel ossicle. Outer aspect. Actual size, .20 mm. 

 2 — Wheel ossicle. Inner aspect. Actual size, .20 mm. 

 .'). 4, — Sigmoid ossicles. Actual size, .11 mm. 

 6, 7, 8 — Tentacle ossicles. Actual size, .10 mm. 

 9, K>^ — Abnornnil wheel ossicles. Actual size, .18 mm. 

 11 — Calcareous ring. Enlarged. 



