1772 Journal of Applied Microscopy 



new species, Steganapsis arremiroides , but also includes a brief critical discussion 

 of recent attempts at a classification of the group. The new species is figured 

 on the single plate. 



" The Cladocera of Nebraska " is an important paper by Charles Fordyce, 

 consisting of over sixty pages and four plates. The paper contains an interest- 

 ing historical account of the discovery of the various species of Cladocera found 

 in this country, the earliest date of an American publication being that of Pro- 

 fessor S. I. Smith's " Sketch of the Invertebrate Fauna of Lake Superior, 1874," 

 in which five species are reported ; a discussion of the distribution of Cladocera 

 throughout the state, the latter being divided into four fairly well marked faunal 

 regions ; a brief study of the vertical migration of the organisms ; a synopsis of 

 the families ; and a description of about twenty-five species. The paper is a 

 valuable contribution to the literature of this group, and will be useful to students 

 of these organisms. 



Professor Henry B. Ward continues his Notes on the Parasites of the Lake 

 Fish in a paper entitled, " On the Structure of the Copulatory Organs of Micro- 

 phallus nov. gen." The paper is distinctly technical in character, closing with a 

 description of the genus, which is illustrated on the single plate. 



Doctor Carl H. Eigenmann contributes a " Description of a new Cave Sala- 

 mander, Spelerpes stejnegeri, from the Caves of Southwestern Missouri." The 

 new species is a brightly colored form, related closely to S. lotigicaudus and 

 S. maculicaudus, and is a twilight rather than a true cave species. The three 

 species mentioned are figured on two plates. 



The Limnological Commission of the Society presents an interesting report 

 in which it makes the following suggestions : that a physicist, a chemist, and a 

 bacteriologist be added to the Commission ; that accurate systematic accounts 

 of fresh-water organisms be published for the assistance of workers ; that faunal 

 records be kept to the end that the geographical distribution of the various species 

 may be determined ; that a summary of the work done in limnology in various 

 countries be published from time to time ; and that individual work be limited 

 to a single body of water or to a definite problem which may concern several 

 such bodies. 



The volume closes with brief biographies and portraits of Jacob Dolson Cox 

 and Moses Clark White, the former of whom was twice president of the Society. 

 University of Rochester. CharlES WriGHT DodGE. 



Books Received. 



Neurological Technique, By Irving Hardesty, Ph. D., Instructor in Anatomy 

 in the University of California, formerly Fellow and Assistant in Neurology in 

 the University of Chicago. The book furnishes a collection of methods for 

 histological investigations of the nervous system, with special attention to the 

 details of procedure. A brief series of directions for the dissection of the 

 mammalian brain is an important feature, together with a copy of the neurologi- 

 cal terms adapted from the German Anatomical Society. 180 pages, 8vo, 

 illustrated, cloth, net, $1.75; postpaid, $1.85. 



