102 



AETICULATA. 



No. 406. Dalmania Hansmanni, Barr. 



This species is closely allied to, Sf not identical with the preceding. It is 

 from the Lower Silurian at Dworetz, near Prague, Bohemia. Price, $0.50- 



No. 407. Dalmania ( Phacops ) limultirus, Green. 



This Trilobite, also called Asaphus limulurus, is one of the 

 most common forms. It has a sublunate buckler, a lobed gla- 

 bella, eyes of medium size, eleven body articulations, and fifteen 

 caudal. The body and caudal portion is more frequently found 

 separated from the cephalic shield. This specimen is from the 

 Niagara Group (Upper Silurian) at Lockport, N. Y. 



Price,$ 0.50 



No. 408. Dalmania micrurus, Green. 



Pygidium, from the Lower Helderberg (Upper Silurian), Schoharie Co., N.Y. 



Price, $0.50. 



No. 409. Dalmania myrmecophora. 



Pygidium ; impression and relief. This specimen shows the broad, mode- 

 rately convex caudal shield with thirteen rings beautifully ornamented with a 

 double row of nodes. No entire specimen of this species — " the largest trilobite 

 by far," says Hall, " which occurs in the higher rocks of our system" — has ever 

 been found. From the Upper Helderberg Group (Devonian), Genesee Co., N.Y. 



Size, 9x8. Price, $3.00. 



No. 410. Dalmania nasntus, Conrad. 



Buckler, restored ; from the Lower Helderberg (Upper 

 Silurian) in Schoharie County, N. Y. 



Size, 7x6. Price, $1.75. 



No. 411. Dalmania nasutus, Conrad. 



Buckler ; two specimens ; from the same locality as the preceding. 



Price, $1.75. 



No. 412. Dalmania nasutus, Conrad. 



Pygidium with spine; impression and relief. From the 

 same locality as the preceding. Price, $1.^5. 



