HISTORICAL NOTES. 7 



Rhabsosoma Whitei, SPENCE, BATE, is not a species by itself but only the 

 male form of Eh. armatum, H. MILNE EDWARDS, a mistake, which will be 

 duly cleared up under ))Xiphocephalus below. He established also the 

 new genus Simorhynchus, with the new species S. antennarius, and a new 

 species of Occycephalus, 0. tenuirostris, mentioned below as Leptocotis 

 tenuirostris. In the same paper he said, Die Gattung Synopia, DANA, 

 die DANA and SPENCE BATE irrthiimlich mit den Oxycephaliden vereiuigt 

 haben, gehort zu den Gammariden)). Among the Oxycephalidae he 

 mentioned then Snehagenia, n. g. later transferred to the Lycseids. 



In 1877 THOMAS H. STREETS, 24, described under the name Oxy- 

 cephalus tuberculatus, SPENCE BATE an animal which I really think may 

 prove to be identical with SPENCE BATE'S species ; he further instituted 

 the new genus Leptocotis with the new species L. spin if era. 



In 1878 GLAUS, 25, gave some interesting notices about the heart 

 and vessels of Oxycephalidee and other Hyperids. 



In the same year THOMAS H. STREETS, 26, described from the Pa- 

 cific the following Oxycephalids viz; Oxycephalus tuberculatus, SPENCE BATE, 

 which, however, is not identical with SPENCE BATE'S species but with 0. 

 Clausi, C. BOVALLIUS; 0. bulbosus, n. sp., 0. scleroticus, n. sp. Lepto- 

 cotis spinifera, STREETS, Calamorhynchus, n. g. with C. pellucidus, 

 n. sp., Rhabdosoma Whitei, SPENCE BATE, Rh. armatum, H. MILNE EDWARDS, 

 and Rh. longirostris, SPENCE BATE, the latter synonymous withXipho- 

 cephalus armatus, H. MILNE EDWARDS. It is noticeable that he did 

 not himself find the specific difference between the Oxycephalus tuber- 

 culatus, described by him in 1877 and the 0. tuberculatus, mentioned in 

 this his latter paper. The descriptions are accompanied with drawings 

 which are not very good, being executed in a small scale. 



24. ThoMAS H. STREETS. Contributions to the Natural History of the Hawaiian 



and Fanning Islands and Lower California*. Bulletin of the Uni- 

 ted States National Museum, 1877. N 7, p. 136138. Was- 

 hington, 1877. 



25. C. GLAUS. Uber Herz und Gefass-system der Hyperiden. Zoologischer An- 



zeiger, herausgegeben von J. V. CARUS. l ster Jahrgang, 1878, p. 

 269271. Leipzig, 1878. 



26. THOMAS H. STREETS. Pelagic Amphipoda. Proceedings of the Academy 



of Natural Sciences of Philadelphia. 1878, p. 276290, pi. 2. 

 Philadelphia, 1878. 



