EXPI.AXATIOX OF F'l.ATI'. LXXIW 



Teredo irregularis Gabb p. 656 



1-2. Anterior and lateral vie\vs of a shell in position in its ttibe 

 of habitation. 

 3. Mass of fossil wood with included tubes. The original of 

 figures I and 2 was removed from this. 



Mi-'rcluiiilvillc clay-marl ; Lciiola, (,i6f). 



TURNUS KlJMMELI n. sp p. 6S2 



4-5. Lateral views of two left waives. 



6. The same as figure 5, (x2J. 



Alarshalltowii clay-inail: near Sz^'cdcsboro, (J^7). 



Phol.\s cith.\r.\ Morton P- 651 



7. Lateral view of an internal cast. 



U'ooJbiiry ilay: Lorillard, { J02') . 



]\Lartesi.\ cret.\ce.a Gabb p. 654 



8-9. Lateral and ventral \'iews (.if an hiternal cast. (x2). 

 lo-ll. Lateral and cardinal views of an internal cast, (x2). 



Maisliallloicn chiy-iuarl : luw SiKicdrsboro, (177). 



PoLORTHUs TIBI.M.IS (^lorton ) p. 659 



12. A'iew iif a group i<i the tube casts, showing their usual form. 



X' early all ha\e their Inwer ends broken off. 



13. Enlarged view of the upper enil of a tube showing the partial 



septa of this part of the tube. 



14. Enlarged view of the apertiu'e. 



15. Enlargement of the upper end of a cast, showing the 



muscular scar. ( .\11 figures after A\diitfield.) 

 / '/hi r///.';e); lliiicsand. 



1032 



