356 



ZOOLOGY 



SECT. 



straight intestine (int.) which extends from the stomach downwards 

 and backwards towards the ventral surface and ends blindly, 



fol.si 



FIG. 296. A, body (if Magellania lenticularis, removed from shell ; /;, sairiltal section nf 

 the entire animal. Both semi-diagrammatic, the lophophore liciiii; iv]>rcM'iitfd as nf smaller 

 proportional size than in the actual animal (cf. Fig. 207). d.t/l. digestive uland : <l. in. drs:il 

 mantle-lobe; </. >. dorsal valve of shell: (ion 1 , yon-. gon.ads ; ht. heart; int. int '<tinc ; 

 IP, tp l . lip ; Iph. lophophore ; l/>h l . its coiled process ; mth. mouth ; />//. in />, m-pliridiiim, 

 in A, iH'phridinl aperture ; prf. peduncle ; pZ. St. pallial sinuses ; x. srta x ; at. stdinach ; r.tn. 

 ventral lobe of mantle ; c. v. ventral valve of shell. 



there being no anus. On each side of the stomach, and opening 

 into it by a duct, is a large, branched digestive gland (d. <jl). The 

 whole canal is lined with ciliated epithelium. 



