1 832. 1 Zooligy. 67 j 



cephahsome, bcenosome (Gr. baino, to walk, locomotion), and uro- 

 some. The head-segments are termed cephalomeres, the thoracic 

 segments btenomeres, and the abdominal uromercs. For the 

 antennae, the term asthopoda, and for the mandibles and maxillae 

 the previously used term gnathopoda is adopted. 



The thoracic legs are termed bcenopoda, and for the abdominal 

 legs, Westwood's term uropoda, applied by him to the terminal 

 pairs of feet of the Tetradecapoda is extended to all the abdomi- 

 nal feet of Arthropods. The basal abdominal feet of male De- 

 capoda modified as accessory reproductive organs, are termed, for 

 convenience in descriptive carcinology, gonopoda, and the jointed 

 anal cerci of certain insects and of Apus, are termed cercopoda 

 {kerkos, cauda). For further explanations and other more special 

 terms, the reader is referred to the memoir to appear in Hayden's 

 Report, U. S. Geological Survey for 1879.— A $• Packard, Jr. 



Zoological Notes. — A series of papers on the comparative mor- 

 phology of the ear, by C. S. Minot, is appearing in the Journal of 

 Otology. Thus far they relate to the auditory organs of the 

 Medusae, the Echinoderms, the Mollusca, worms and Crustacea. 

 They will be found to be useful compilations, and are accom- 

 panied by cuts and full bibliographical lists. The mites and 



other low Arachnids of the Malayan Archipelago are described 

 and well figured by Dr. Thorell in the annals of the Museo Civico di 



Storia Naturali di Genova. Dr. H. C. Chapman describes a 



fcetal Kangaroo and its membranes in the Proceedings of the 

 Academy of Natural Sciences of Philadelphia. The author closes 

 his paper as follows : " On the sup ;eory of evo- 



lution is true, one would naturally expect to find forms inter- 

 mediate in their structure and development between the reptiles 

 and birds on the one hand and the placental mammalia on the 

 other. As is well known, in the structure of its skeleton and 

 generative apparatus, tin Oniiili rhyncus resembles very closely 

 the reptile and bird, while, as we have just seen, the fcetal mem- 

 branes of the Kangaroo recall the corresponding parts in the 

 reptilian-bird type and foreshadow those of the placental mam- 

 mal. If the parts in question have been truthfully described and 

 correctly interpreted as partly bridging over the gap between the 

 non-placental and placental vertebrates, they supply exactly what 

 the theory of evolution demands, and furnish, therefore, one 



more proof of the truth of that doctrine." The vagus nerve of 



the domestic cat is described in detail, with wood cuts, by Dr. T. 

 B. Stowell in the Proceedings of the American Philosophical 



horse, ox, she .. he is satisfied that the cat pre- 



