1 7 6 



THE GASTROPODA 



British. Oampaspe, Bergh. FAMILY 6. BORXELLIDAE, Fischer. The 

 dorsum garnished on either side with papillae at the bases of which are 



FIG. 160. 



A, Eolis papillosa, dorsal view : a, posterior cephalic tentacle (rhinophore) ; 6, anterior 

 cephalic tentacle ; c, the dorsal papillae. B, Tethys leporina, dorsal view ; a, the cephalic hood ; 

 ft, cephalic tentacle ; c, neck ; d, genital pore ; e, anus ; /, large dorsal papillae ; g, smaller 

 dorsal papillae ; h, margin of the foot. C, Doris iuberculata, seen from the pedal surface ; I), 

 margin of the head ; /, sole of the foot; ra, mouth ; sp, the mantle. D, E, dorsal and lateral 

 view of Elysia viridis ; b, tentacle ; ep, lateral outgrowths. (From Lankester, after (Hancock, 

 Cuvier, and Allmann.) 



FIG. 161. 



Phyllirhoe buceplialuin, right-side view ; 

 the internal organs are shown as seen by 

 transmitted light, a, mouth ; 6, radular 

 sac ; c, oesophagus ; c', intestine ; d, 

 stomach ; /, the genital pore ; /', anus ; 

 9> d'i 9"i 0"'t the four lobes of the liver ; 

 h, the heart (auricle and ventricle) ; I, the 

 renal sac ; I', the ciliated reno-pericardial 

 duct ; tii, the external opening of the 

 renal sac ; n, the cerebral ganglion ; o, 

 the cephalic tentacles ; w, the parasitic 

 medusa Mnestra, usually found attached 

 in this position ; y, the ovo-testes. (From 

 Lankester, after Keferstein.) 



ramified appendages. Genus Bornella, Gray. FAMILY 7. LOMAXOTIDAE, 

 Bergh. Body flattened ; the two dorsal borders prominent and foliaceous 

 Genus Lomanotus, Verany ; British. 



