TYPE SPECIMENS OF INVEKTEKRATE FOSSILS. 215 



41807. Cytherella submarginata Ulrich. Holotype. 



lioceiie. TppcT Marlboro, Maryland. 



Ulrich, IMaryland ('.col. Surv., Eocene, I9<ti, p. i iS, pi. 16, figs. 

 14. '5- 



41808. Cytherella? subrotunda I'lrich. Holotype. 



Stones River (Ord. ). Minneapolis, Miiniesota. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., iMnal Rv])i.. Ill, I'l. 

 II, 1894, p. 685, pi. 44, fig. 43- 



35444. Cytheridea ( ?) chesapeakensis Ulrich and lia.s.sler. 



Holotype. 

 Calvert (Miocene.) Plum Point, Maryland. 



Ulrich and Bassler, IMaryland Geol. vSurv., INIiocene, 1904, p. 125, 

 pl- 37, fiK- 9- 



41804. Cytheridea perarcuata llrich. Holotype. 



Eocene. Potomac Park, Maryland. 



Ulrich, Maryland Geol. Surv., Eocene, 1901, p. 121, j)!. 16, figs. 

 22, 23. 



35445. Cytheridea subovata Ulrich and Ba.ssler. Cotypes. 



Calvert (Miocene). Plum Point, Maryland. 



Ulrich and Rassler, Maryland Geol. Surv., Miocene, 1904, p. 124 

 pl- 37, fi.u;«- i-''^- 



35446. Cytherideis ashermani Ulrich and Bassler. Cotypes. 



Calvert (Miocene). Plum Point, Maryland. 



Ulrich and Hassler, IMaryland Geol. Surv., Miocene, 1904, ]). J 26, 

 jil. 37, figs. i(i~i6. 



35447. Cytherideis cylindrica Ulrich and Ba.ssler. HolotNjJe. 



Calvert (Miocene). Plum Point, Maryland. 



Ulrich and Bassler, IMar3land ("ieol. Snr\-., IMiocene, 1904, ]>. 126, 

 pl. 37, fig. 17. 



35448. Cytherideis longula Ulrich and Bas.sler. Cotypes. 



Calvert (Miocene). Plum Point, Maryland. 



Ulrich and Bassler, Maryland Geol. Surv., IMiocene, 1904, ]>. 12S, 

 pl. 37. figs. 21-27. 



35449. Cytherideis semicircularis Ulrich and Ba.ssler. Cot>pes. 



Calvert (Miocene). Plum Point, Maryland. 



Ulrich and Ba.ssler, Maryland Geol. Surv., Miocene, 1904, p. 127, 

 pl- 37, fi^s- 18-20. 



35450. Cytherideis subsequalis I'lrich and Bassler. Holotype. 



Calvert (Pliocene). Plum Point, Maryland. 



Ulrich and Bassler, Maryland Geol. Surv., Miocene, 1904, ]>. 127, 

 pl. 37, fig. 2S. 



35443. Cytheropteron nodosum Ulrich and Ba.s.sler. Holotype. 



Chesapeake (Miocene). James River, \'irginia. 



Ulrich and Ba.ssler, Mar^dand Geol. vSurv., IMiocene, 1904, p. 129, 

 pl. 38, figs. 37-40. 



