IM.ATK LXll. 



(lUAMMYSIA (Si'HENOMYA) CUNEATA. 



I'llgO 3*!. 



See Plate. 93. 

 V'lg. I A fsinall rig'ht valve. 



Hainillon {ffoiiii. liinr'a ijnif, jStclmfiar'n: Co., N. Y. 

 Kiff 2. A cjinlinal view of a small iiiilivuliial. 



Hamilton {fi-oiii). Xmr Apulia, N. Y. 

 V\g. 3. The rig-lit valve of a liir^ imrnidual somewhat vertically comin-esaeil. 



Haiiiiltoti f,'i-oiii). Ntw Berlin, N. Y. 

 }?\g. 4. The left «ide of a crushed siiecimeii. 

 Fijf . 5. The light side of the same showing' the short hiiig-e line. 

 Kig. •!. The Hght side of a comjiressed specimen, 

 rig. 7. The right side of a specimen similar to the jireceding-. 

 Fig. 8 A caiilinal view of a speciiiuMi from a gutta-ixii-cha impression in the natural moidd. 



Uamiltoii groviji. /Silii>?iarie Co., N. Y. 

 Fig. 9. ('anliiial view of a large indiviihial which hiun been vertically crushed. 



Hamilton group. OUcyo Co., JS. T. 



Grammv.sia 0IX)B0SA. 



I'agc 372. 

 Fig. 10. The light side of a small individual. 



Hamilton gi-oup. Leon/irfljitnlle, N. Y. 

 Figs. 11, 12. I^Kift side and cardinal view of a si)ecimen somewhat compi-essed. 



Hamilton group. HamilUm, N. Y. 

 Fig. 13. Anterior view of the specimen fig. 10. 

 Fig. 14. Anterior view of the 8i>ecimen tig. 11. 

 Fig. IS. Anterior view of a specimen with the valves conjoined along the hinge and sepai*ate<I below. 



Hamilton group. Hamilton, N. Y. 

 Fig. Hi. A view of the right valve of the pn^ceding specimen. 

 Fig. 17. A carilinal view of the same specimen. 

 Fig. 18. The right side of a specimen pr<^s<!rving both valves. 

 Fig. IS. The leftside of the same specimen, th(! valve distorted by pressure. 



Hamilton group. Near HamilUm, N. T. 



