PLATE XLVIII. 



Page 

 Megistockinus spixosulus Lyon 54-4 



Fig. la. Posterior view of the type specimen; from Louisville. (Lyon collection.) 

 lb. Dorsal aspect of the same specimen. 

 If. Ventral aspect of same. 



2. A specimen from Columbus, O. ; the form described by S. A. Miller as 

 J/, i^ileatus. (Coll. W. and Sp.) 



Me(;istocrinus latus Hall 538 



Za. Ventral aspect of calyx. (Coll. A. S Tiffany.) 



3i. Dorsal view of same. (The orientation of both figures incorrect.) 



Megistocrixus Farxsworthi White 539 



4(7. Dorsal view of the calyx. (Coll. W. and Sp.) 



■lb. Side view of another specimen. (Same collection.) 



Megistocrixus coxcavus W. and Sp 543 



5a. Dorsal view of the calyx. (Coll. W. and Sp.) 



!)b. Lateral view of the type specimen. (Davenport Acad. Sci.) 



5c. Ventral aspect of the same specimen. 



Megistocrixus rugosus Lyon and Cass 542 



6a. Dorsal aspect of the calyx. (Coll. W. and Sp.) 

 65. Ventral aspect of the type specimen. (Lyon collection.) 

 Gc. Anterior view of a smaller specimen, showing portion of the anal tube. 

 (Same collection.) 



