372 TRANSACTIONS OF THE [nOV. 15» 



of civilization. One of tlie tombs yielded a slab covered with 

 emblems resembling those of the Incas. There is no waj^ of deter- 

 mining accurately, however, whether the guano was deposited 

 after the burial or previously. The islands on which the guano 

 is found are granitic ; the north island had a deposit of 203 feet, 

 in places, the middle island was of less importance, and the 

 southern island had a deposit of 105 feet in depth in places. 

 The material is like soil at the top, and hard at the bottom. The 

 workings were abandoned by the Government in 1880. 



The paper was discussed by Dr. Julien, Professor Martin and 

 Professor Kemp. Dr. Julien compared these deposits with similar 

 deposits in the West Indies, particularly in the Island of the 

 Sombrero. 



The last paper of the evening was by Mr. Stuart Weller, en- 

 titled, "A New Crinoid from the Coal Measures of Kansas." It 

 was read by title only, and the Academ}^ adjourned at 9:40. 



Richard E. Dodge, 



Secretary. 



DESCRIPTION OF A NEW SPECIES OF HYDRE- 

 lONOCRINUS FROM THE COAL MEASURES 



OF KANSAS. 

 (With Plate XXXVI.) 



Although crinoidal columns are present in abundance in the 

 limestones of the coal measures, well preserved bodies of these 

 organisms are exceedingly rare ; and because of their rarity and 

 of the extravagant character which many of them assume, they 

 are alwaj'^s of great interest. The whole genus to which the pres- 

 ent species belongs is remarkable for the extravagant develop- 

 ment of the ventral sack with its crown of large spinose plates. 



The specimen here described and illustrated has been kindly 

 submitted to the writer for study by Mr. L. C. Wooster, of the 

 State Normal School, at Emporia, Kansas, by whom it was col- 

 lected and to whom it belongs. 



Hydreionocrinus kansasensis n. sp. 



(Plate XXXVI.) 



Dorsal cup depressed, nearly saucer-shaped, more than twice 

 as wide as high, truncated below. The margins of all the plates, 



