MURDOCH : ANATOMY OF ASHMUNELLA. 



85 



Fig. I. 



Fig. 2. 



^\- 3- 



Fig. 4. 



I-'ig- 5. 



Fig. 6. 



Fig. 7. 



Fig. S. 



EXPLANATION OF PLATE VIL 



Ashmundla jiseudodunta. 

 Jaw. 



Teeth. 



The Alimentary canal, pallial organs, etc. 

 Generative organs. 



Cross section through the penis showing the internal plications. 

 Cross section through the appendix to the hermaphrodite duct. 

 Albumen gland, much enlarged, to show the natural position of the 

 appendix, hermaphrodite duct, and the membrane enveloping the latter. 

 Aslnmuiella tlwmsoniana var. imrlcrac. 

 Generative organs. 



Reference Letters. 



THREE NEW NUDIBRANCHS FROM CALIFORNIA. 



By T. I). A. COCKERELL. 



Copyphella eooperi, n. sp. 



Length about 20 millim. ; foot narrow, posterior end long attenuate, 

 anterior end produced into well-developed foot-tentacle.s at the sides, 

 these curled backward, not half as long as oral tentacles; rhinophores 

 as long (about 4 millim.) as oral tentacles, and similar to them, except 

 that they are slightly verrucose; eyes very distinct, immediately behind 

 rhinophores ; branchial tufts in six pairs, the second largest ; anterior 

 tufts with about 28 papillae; the tufts are close together, and spreading, 

 so that as the animal crawls they do not appear separate. I'ellucid 

 white with a decided pink tinge ; a brilliant greenish-blue patch 



