176 



Kansas Academy of Science. 



PLATE I. 



Solemya ventricosa Conrad. 



Nucula (Acila) castrensis H. & A. Adams; left valve. 



Nucula (Acila) gettysburgensis n. s. ; left valve. 



Yoldia impressa Conrad ; cast of right valve. 



Phacoides acutilineatus Conrad ; a cast ; times, one-half. 



Phacoides cf. nuttallii Conrad ; a cast. 



Thyasira bisecta Conrad. 



Venus (Chione) vespertina Conrad ; a cast ; times, one-half. 



Venus (Chione) angustifrons Conrad; a cast; times, one-half. 



Venus (Chione) mathewsonii Gabb ; a much broken specimen; times, one-half. 



Venus (Chione) temblorensis Anderson. 



Venus (Chione) olympidea n. s. ; a cast. 



Venus (Chione) clallamensis n. s. ; a cast. 



