At the conclusion of Dr. Warren's paper a letter was 

 read by the Secretary, addressed to him by Mr. E. G. 

 Squier, corroborating Dr. Warren's view of the true char- 

 acter of the so called " Aztec Children," containing the fol- 

 lowing statement : — 



" The Commandant of the Port of La Union, in the State of 

 San Salvador, Central America, informs me that they were born 

 somewhere near the town of Santa Ana, in that State, of parents, 

 one of whom certainly, if not both, was dwarfed or deformed 

 and imbecile. The Indians residing in the vicinity of Santa 

 Ana are civilized, and centuries ago adopted Spanish customs 

 and the Spanish language. So far as I could discover from a 

 few words of their ancient language which came into my posses- 

 sion, they belong to the Cholutecan or Chorotegan stock, which, 

 before the conquest, extended over a part of San Salvador, Hon- 

 duras, and Nicaragua, but which was chiefly concentrated around 

 the Gulf of Fonseca." 



Mr. T. T. Bouve read descriptions of a number of new 

 species of fossil Echinoderms, from the Lower Tertiary 

 rocks of Georgia, among others of the following: * 



Catopygus patellifoemis. Ob- 

 long-ovate, and rather pointed poste- 

 riorly. Superior face conico-convex, 

 and forming with the inferior an 

 acute margin. 



Ambulacral areas, narrow. Anus, 

 transverse. 



The width of this species in pro- 

 portion to the length, is as 7 to 10 ; 

 height to length as 9 to 20. 



Description of characters from specimens in the collection of 

 the Boston Society of Natural History. 



* Subsequent to the reading of his paper, Mr. Bouve found that some of 

 the fossils included by him, had already been described by Mr. Conrad a few- 

 weeks previous, in the Novemher number of the Journal of the Academy of 

 Natural Sciences, Philadelphia. These are consequently omitted here. 



