530 ON THE RENAL ORGAN IN THE NUDIBRANCHIATE MOLLUSCA. 
Fig. 3. Ovarian ramuscule of the renal chamber, much enlarged: v, ovarian mass ; w, branch ‘Connecting 
the ramuscule with the posterior trunk of the renal chamber. 
Fig. 4. A portion of one of the hepatic ramuscules, greatly enlarged. 
Fig. 5. Three of the granular cells from the glandular matter lining the ramuscule, greatly magnified. 
Fig. 6. Anal nipple: 7, external orifice of the renal chamber ; v, anal orifice. 
Prate LIX. 
Fig. 1. Diagram of lateral view of the viscera of Doris tuberculata, exhibiting the relative position of the 
. renal chambers: a, so-called pericardium ; a’, dorsal wall of ditto; a”, floor of ditto; 5, ventricle ; 
c, auricle; d, pyriform vesicle; e, orifice of ditto, opening into the pericardium; A, tubular 
roles of vesicle; i, orifice of ditto, leading into the renal chamber ; j j, renal chamber 
proper; j’, dorsal wall of ditto; k k; branches of the anterior bifurcation of ditto; J, lateral 
branches of ditto; r, external orifice of ditto; s, anal nipple; tt, intestine ; u,liver; v, stomach; 
w, esophagus; ره‎ buccal organ; 4, oral orifice; y, ventral surface or foot of the animal; 
z, dorsal surface. . 
Fig. 2. Diagram of lateral view of the viscera of Eledone cirrosus, to show the homological relation of the 
renal chambers to those of Doris. 
(The letters in this instance in no way correspond to those of the other figures.) 
a, renal chamber proper, the so-called pericardium; 4, external orifice of ditto; c, genital 
chamber, the homologue of the so-called pericardium in Doris; d, ovary ; e, tube connecting 
the genital chamber with the renal chamber proper; f, orifice of ditto, leading into genital 
chamber; g, orifice at the other extremity of the tube, leading into the renal chamber ; ^, sys- 
temic ventricle; i, oral orifice ; 7, buccal organ; k, oesophagus ; J, crop, or anterior stomach; 
m, stomach or gizzard; n, spiral ezecum of ditto; o, intestine; p, anal nipple; q, biliary ducts ; 
r, liver; s, duct of the ink -bag; t, branchial chamber ; ; u, funnel; v, portion of two of the arms. 
