EXPLANATION OF PLATE XXL 



DlSCdSI'ARSA VAKIANS L'Iricll p. 3I5 



1. An atlaclu'd culnny. (x2). 



2. A free colnny, (X4J. 



J'iiicciihrzcii linicsiiiid; l'iiicciitozi.'n, (ijf). 



Di.vsTdruRA t.inEaTa Calili ami llijrn p. 3t6 



3-4. X'iews ijf l«n ■-pccimeiis, ( x3 ) . 



riiu'ciitiizcii UiiicsanJ; I'iiwciitowii. (ij/). 



RKncri.ii'uiiA DiCHdTdM A CiLilili ami Lloni. p. 318 



5-1J. Gablj and H(jrn"s original figures. 

 10. Transverse seclinn uf a fragment, (x6), (after Lnrieh). 

 11-12. LTpper and lower portions of figure to enlarged 20 times 

 showing the tuLes with a longitudinal direetion in the 

 lower part; ahovc they gradually turn upward while at 

 the top, fig. II, they are nearly at right angles to the 

 lenglh, (after Lilricli). 



13. Peirlinn of one side of a fragment, (x20), (after Ldrieh). 



14. A hrcikun .gonieyst whieh was formed over a previous smaller 



eyst wdiicli remains inlact, (xjo), (after L'lrich), 



I 'llU-Clltni^'ll lilllCSllllJ : I'illCilltOWII. (It-/). 



Cristna STRiATnpoR.\ L'lrieh p. 319 



15. The type speeimen from the Mioeene of Maryland, (X5I4). 



(after LdrichJ. 

 76. tapper surfaee of one oi the hranehes of the same speeimen, 

 (after L'lrieh). 



17. I^ateral \iew of the same, (X23), (after L^lrich). 



18. TransNerse seetion of one of the branches of the same, (X17), 



(after Vlrieh). 



922 



