ELIOT: NUDIBKAN'CHS AND TECTIBRANCHS FROM INDO-PACIFIC. 



short spire. On this spire and on the anterior mantle edge are a few 

 blue spots. Across the roof of the mantle chamber — that is on the 

 underside of the mantle — runs the gill, which is an even band of 

 lamellae, about 3 mm. wide. Between these lamellae are shorter ones. 

 The pericardium, in which the heart is clearly visible, lies before the 

 gill ; behind the gill is an opaque white triangular organ, about 

 3 mm. long, which is apparently the post-branchial gland mentioned 

 by Bergh. 



Text Fig. i. — 

 The kidney of LophocercHS viridis. 



"-^ 



T.J.E. del. 



a. Gill filaments hanging down in mantle 



chamber. 



b. Renal chambers. 



c. Blood spaces. / ) ^ ) 11 t^\ 



Above the lamella, in the roof of the mantle, is a chamber traversed 

 by tubes which are lined with projecting cells. This is apparently 

 the renal organ. (Text Fig. i). 



