IIOLOTHTRIA. 35 



PLATE III. Large specimen laid open, and moat of the internal organi- 

 sation removed from a preparation by Mr Goadby. Reduced. 



Pi.m: IV. Internal organization of the IIl,,ihnria pentactet, as in a 

 preparation by Mr Goadby. Teiita.-ula contracted, a. Ampulla 

 J'tiann, h. Intestinal canal, c. Portion of the ropes of the 



mm. . 



PIATK V. Intestinal organs exposed. Stomach everted, a. Intestinal 

 canal, b. M. >. nt.-i . . c. Portion of the respiratory tree, d. 

 Miutcular ligament* n\' the cloaca, e, from a preparation by Mr 

 Goadby. 



PI.ATK VI. Respirator}' organs as dissected and prepared by Mr Goadby. 

 Orifice of the cloaca, a. Muscular ligaments, h, securing the cloaca 

 to the parietes of the body. Obtuse extremities of the tubular 

 organs, c. Ligaments securing the trunks to the parietes, d. 



PLATE VII. Ovarium of the Holothuria pentacte.*, from a dissection by 

 Mr Goadby. 



PLATE XII. 



Fio. 1. Small Holothuria. 



2. Scale* upon the skin, a. Scale enlarged, b. 



2. HoLOTHURiA FUSUS. The Spindle Sea Cucumber or Sweepvater. 

 Pum* VIII.. IX., X., XL, XII. 



On the I8tli of Noveintar, a specimen was recovered from the 

 north-eastern part of the Frith of Forth. It is of some consequence to 

 late the leading incidents of natural history as done in these pages, both 

 because intervals of time are the grand regulators of the world, and the 



