PLATE III. 



Fig. 3. — Male viewed from the ventral surface; the mantle has been turned back over the posterior end of the body, 

 exposing its inner surface and the organs contained in the mantle chamber. 

 A, anus. 

 I >T, digital tentacles, composing the cephalic sheath. 



E, eye. 



F, funnel. 



11', interliranchial papilla. 

 ( i", postocular tentacle. 

 P, penis. 



PA, preanal papilla'. 

 PP, pericardial pore. 

 RA, anterior renal pure. 

 l!l', posterior renal pore. 

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