n. REFEKENCES TO THE PLATES AND FIGURES. 65 



PLATE VIII. 



Fig. 1. A transverse fold of tlic ventriculus of Passalus cornutus, witli numerous bairlikc appendages 

 covered with granulo-filamentous phytoiJ matter, and buuclics of Cladophytum and CurpwdaJus. 

 a. Mucous membrane. 

 h. Hairs. 



c. Phytoid substance. 



d. Cladophijlum comatum. 



e. Corynocladus radiaius. 



f. Arlhromitus crishilus. 



Fig. 2. Portion of the mucous membrane of the veutrieulus of Jtdas ma/yiiiatus, witli patches of granulo- 

 phytoid matter growing upon it. 



a. Patches of grauulo-phytoid matter. 



b. Harder nuclei of phytoid matter. 



c. Bunches of Cladoplii/tiim comattim, 



d. Arthromitus ci-ista(us. 



e. Epithelial surface. 



/. Basement-membrane. 



Fig. 3. Portion of Entcrohryus dajam, with two large bunches of Arthromitus crktatus, and a tuft of 

 C'lado2)hyium. 



Fig. 4. Portion of Entcrohryus clcyans, overgrown with profuse bunches of Arthromilas cristatus. 



Fig. 5. Summit of a hair-like appendage, from which grow numerous filaments of Arthromitus and other 

 finer phytoid filaments, from the ventriculus of Passalus cormUus. 



Fig. 6. Summit of a primary cell of Entcrohryus degans, from which grows a bunch of CladopJiyium 

 comatum. 



Fig. 7. Two branches of Cladopliytum, exhibiting minute ramuli. 



Fig. 8. Bunch of CladopJiytnin comatum, and several long filaments of Arthromitus growing from a 

 portion of the mucous membrane of the ventriculus of Julus jnar/jiuatus. 



PLATE IX. 



Fig. 1. Represents a portion of the inner surface of the ventriculus of Passalus comutus, with its numerous 

 Lair-like appendages enveloped in a parasitic, granulo-filamentous, pliytoid substance. 



a. Light shading, representing the bottom of the saceuli of the ventriculus, furnished with short hairs. 



I. Broad transverse folds of the mucous membrane, between the saceuli. 



c, d. Longitudinal folds separating the saceuli, and presenting on each side, between the position of 



the transverse folds, a column of closely-set, simple, bidentate, and tridentate corneous spines. 

 e. Long hair-like appendages, which border the ventricular saceuli and become the nuclei of large 



masses of growing phytoid matter. 

 /. Short hairs, everywhere studding the mucous membrane, and also enveloped with phytoid matter. 

 Fig. 2. Portion of a transverse fold of mucous membrane, from between tlie ventricular saceuli of 

 Passalus comutus, with its hair-like appendages enveloped in phytoid matter exhibited of the natural colors. 



a. Mucous membrane. 



b. Hair-like appendages. 



c. Granulo-filamentous phytoid matter. 



d. Bunches of Cladophytum. 



e. Bunches of Corynocladus. 



