823 St. Maurice and Claibornb Prlrcypoda 223 



PLATK 22 

 Figure Page 



I. .lira r/iof>iL)oide//a hea, ^6 mm 51 



An adult Claiborne sand specimen, figured somewhat less 

 than natural size but showing characteristic markings. For 

 interior, see pi. 21, fig. 13. 



2-4. Area rhom., \a.r. parsaba, n. var 52 



Fig. 2, 7.5 mm. 



3, 6.5 mm. 



4, 5.5 mm., Sabine River, La. -Tex. 



5-7. Area vaiig/iani Casey 53 



Fig. 5, 15 mm. 



6, 13 " 



7, 10 mm., from St. Maurice. 



8-16. Byssoarca {ciiciiUoides f)y wat. fudoTiciana, n. vav 54 



Fig. 8, 1 1.5 mm. 

 9, 13 " 



from the Sabine River, La Tex. 



17. Byssoarca ciictdloides Con., 55 mm.... 54 



Type, Phila. Academy Coll. Jacksonian. 



18. Area reticulata Gmel., 14 mm 55 



From Newton, Miss. 



19. The same ; 10 mm. 



20. Area aldrichi Dall, 8 mm 55 



Claiborne. 



21. Area harrisi Sheldon, 5 mni 56 



Specimen probably in Coll. Johns Hopk. Univ. 



