RECORDS 505 



far, and is very active at night. It is destructive to insects, and 

 is a pest in Bermuda, where it attacks cats and dogs flitally. 



Professor Osborn reported a continuation of his investiga- 

 tions upon the Phylogeny of the Rhinoceroses of Europe. 

 These animals appear to fall under the law of early divergence, 

 and to constitute at least six separate series or phyla which, so 

 far as known at present, are not genetically related to each 

 other, but undergo a more or less parallel development as fol- 

 lows : DiccratJia-iince, Acerathadince, BracliypodincE, Ccratorhince, 

 Atelodince, RJiinoccrotincB. The chief criteria in distinguishing 

 rhinoceroses are the proportions of the skull, whether dolichoce- 

 phalic or brachycephalic, the proportions of the limb in reference 

 to cursorial or aquatic habits and the position of the horns ; sub- 

 sidiary to these features are the types of tooth structure. The 

 origin of the rhinoceroses is still obscure, although it appears to 

 be possible to derive the Diceratheriince from certain Eocene 

 Hyracodontidai. This study will be published in full in the 

 Bulk till of the AiJieiican Museum of Natural History, and it 

 constitutes a part of the continuation of the author's memoir on 

 the extinct rhinoceroses. 



Mr. H. L. Clark's paper was read by Professor C. L. Bristol. 

 In this paper Mr. Clark gave an account of the Echinoderms 

 collected by the party of zoologists from the New York Univer- 

 sity in the summer of 1899, together with a summary of his 

 own observations during April of that year. It is to be con- 

 cluded from an abundance of observations that the distinctions 

 hitherto thought to exist between Stichopus diaboli and Acan- 

 thomela are not to be regarded as valid, and the forms described 

 under these names must be referred to 5. Mobii. Twenty-nine 

 species are listed. 



Mr. Waite called attention to the fact that the madreporic 



body in Asterias tenuispina branches forming 1-4 bodies in each 



animal, thereby making orientation difficult. 



Francis E. Lloyd, 



Secretary. 

 Annals N. Y. Acad. Sci., Vol. XIII., April 16, 1901—33. 



