CRUSTACEA. 



103 



No. 413. Dalinania nasutus, Conrad. 



Under side of the head ; from the same locality as the preceding. 



Price, $0.60- 



No. 414. Dalmania selemirus, Eaton. 



From the Upper Helderberg limestone (Devonian) at Auburn, N. Y. 



Price, $0.75* 



No. 415. Dalmania socialis, Barr. 



Two specimens ; from the Lower Silurian, Bohemia. Price, $0.75. 



No. 416. Dikelocephalus Minnesotensis 5 Owen. 



Central portion of the head with cheek, placed on 

 the same slab with tail. The body segments are wanting 

 in this specimen, and portions of the cheeks and tail are 

 restored. This is one of the earliest of the Trilobite 

 forms. From the Potsdam sandstone (Lower Silurian), 

 Mazomania, Wisconsin. Size, 9x8. Price, $1.75. 



No. 417. Dindymene Bohemica, Barr. 



In this Trilobite, the glabella is not lobed, the eyes and facial suture are not 

 apparent, and the thorax has ten segments. It is from the Lower Silurian, Roky- 

 can, Bohemia. Price, $0.20. 



No. 418. Dionide formosa, Barr. 



From the Lower Silurian at Beraun, Bohemia. 



Price, $0.30. 



No. 419. Encrinnms punctatus, Briinn. 



From the Upper Silurian (Wenlock), Dudley, England. 

 Original in the private Geological Cabinet of Mr. Ward, 

 Rochester. Price, $0.40. 



No. 420. Ellipsocephalus Hoffi, Schloth. 



From the Lower Silurian in Bohemia. 



Price. $0.25. 



