188 TRANSACTIONS OF THE [ApR. 24 



upon the (1) disposition and character of the lateral line organs, 

 (2) pineal foramen, (3) nasal capsules, (4) dentary plates (homo- 

 logics), (5) ginglymoid articulation of lateral shoulder plates,. 

 (6) character of 'shagreen,' (7) j^robable disposition of paired 

 and unpaired fins. 



Prof. N. L. Britton presented a ""Note on the Genus; 

 Lechea. " This genus of Cistinese is entirely American, and from 

 the investigations of Mr. Wm. H. Leggett and Dr. Britton 

 appears to consist of about fourteen species. 



April 17, 1893. 

 Stated Meeting. 



President Bolton in the chair, and about sixty persons 

 present. 



Prof. W. Le Coute Stevens delivered the seventh lecture of 

 the Public Lecture Course, 1892-1893 on "Naples and Its 

 Surroundings," fully illustrated by lantern slides. 



At the close of the address a vote of thanks was tendered the 

 lecturer. 



April 24, 1893. 



Stated Meeting. 

 Pi-esident Bolton in the chair, and thirty-six persons present. 



section or GEOLOGY AND MINERALOGY. 



Prof. Kemp exhibited four-toed tracks in Triassic Sandstone 

 from McDowell's Quarry, Upper Montclair, N. J. 



Dr. A. A. JuLiEN read a paper entitled " A Study of the New 

 York Obelisk as a Decayed Boulder," illustrated by lantern 

 slides. 



The following papers were read by title, " On the Organs of 

 Special Sense in the Coccosteids," by Dr. Bashford Dean, 



