EUGYEA GLOBOSA. 75 



junction with the upper or rectal portion, is much less 

 in diameter than the lower, and at its junction with 

 the latter it is suddenly constricted, the constriction 

 being near the end of the loop. The liver, which is of 

 a dark olive or blackish green, is bulky and divided 

 into two lobes ; one, much the larger, seems to envelope 

 the stomach, the other is situated immediately below 

 and in contact with the large mass on the right side, 

 but is a little separated on the left. The margin of the 

 amis is apparently smooth, but it was not distinct. 



E. glolosa is distinguished from its congener by the 

 form and greater size of the tubes, by the less volu- 

 minous intestine, by the shortness of its loop, and by 

 the dark colour of the liver. 



Family 3. CYNTHIAD.E. 



Animal simple, coriaceous, sac-formed or globose, 

 sessile, attached or free. Tfst generally adhering to 

 the mantle throughout. Branchial and atrial apertures 

 4-lobed or quadrate, sometimes appearing nearly cir- 

 cular when expanded; without ocelli. Tentacular fila- 

 ments simple or compound. Branchial sac generally 

 with folds, the meshes rectilinear. 



Genus 6. CYNTHIA Savigny, 1809. 



Ascidia (pars) LINNJCUS Syst. Nat. [I, pt. 2] (1767), p. 



1087; 0. F. MULLER Zool. Dan. Proclr. [1776], p. 224; 



FABRICIUS Fauna Grcenl. [1780], p. 330; LAMARCK Hist. 



Nat. Anim. sans Vert, eel. 1 [III (1816), p. 119]. 

 Cynthia SAVIGNY [in Descr. Egypt., Hist. Nat. I (1809), 



pt. 3, p. 39, and] Mem. Anim. sans Vert, pt, 2 [1816], pp. 



90, 142 ; DUJARDIN in Lamarck's Hist. Nat. Anim. sans 



Vert. eel. 2, III [1840], p. 529; FORBES in Brit. Moll. I 



[1848], p. 37 ; ALDER & HANCOCK in Trans. Tyneside Nat. 



Field Club, I [1848], p. 195; HUXLEY in Phil. Trans. 



[1851, pi. xix ;] GOSSE Man. Marine Zool. II [1856], p. 35 ; 



WOODWARD Man. Moll. [1856], p. 338; H. & A. ADAMS 



Gen. Eecent Moll. I [1858], p. 591. 



