• I'], ATE 22. 



I'lG. 1. Cristcllarid d'orJiitinii. X2."i. Side view. D2GS2. 



2. Cristellaria rotiiJata. X'2~k Side view. r>2o7T 



3. Trifariiia bra<hii. a. side view; b. aiiertural view. After Uallvwill 



and Wright. 



4. Trifanna hradijl. XT"., (t. side view; h. ai)ertiiral view. After 



H. B. Brady. 



5-7. Trifarina bradi/i. X50. Side vievv's. D267T. 



8. Trifarina bradiji. X7r). Side view. After H. W. r>rad.v. 



0. Trifarina bradiii. X7ri. a. frdiit view: /). aiiiTlui-al view, .\fter 



H. B. Brady. 



200 



