252 eobert h. wolcott: 



BIBLIOGRAPHY. 



von Baer, Carl Ernst. 



27. Beitrage zur Kenntniss der neideren Thiere. Nova Acta 

 phys-rned. Acad. Caes. Leop.-Carolinae nat. cur., xiii, pt. 2, 523- 

 762. Bonnae, 1327. 

 Describes A. ypsilophorus as Hydrachna concharum. 



Barrois and Moniez. 



87. Catalogue des Hydracknides recueillies dans le nord de la 

 France. Lille, 1887. 36 pp. 



A. crassipes (Mull.), Cochleophorus spinipes (Mull.), C. vernalis 

 (Mull.), A. ypsilophorus (Bonz), A. Bonzi (Clap.). 



VAN BENEDEN, P.J. 



48. Recherches sur. l'histoire naturelle et le developpement de 1' 

 Atax ypsilophora (Hydrachna concharum), etc. Bruxelles, 1848. 

 (24 pp., 1 pi.). 

 The species studied was A. intermedins Koenike. 



Berlese, Ant. 



82. Acari, Myriopoda et Scorpiones hucusque in Italia reperta. 

 79 Fascicles and supplement. Padova, 1882 — '96. 

 A. crassipes and "A. limosus Koch " (according to Piersig (96b), 

 A. limosus Koch = Cochleophorus spinipes (Mull.). 



Bessels, Emil. 



69. Bemerkungen liber die in unsei'en Najaden schmarotzender 

 Atax-Arten. Jahreshft. d. Ver. vaterl. Naturk. Wiirtt. xxv, 1869, 

 146-152. Transl. by W. S. Dallas in Ann. and Mag. Nat. Hist, 

 vii, 1871, 55-59. 

 Observations on development, etc. 



Bonz,Christoph. Gottlieb. 



1783. Nova acta phys.-mecl. Acad. Caes. Leop.-Carolinae nat. cur., 

 etc. Observatio x. vii, 52-53, PI. I, f. 1--4. Norimbergae, 1783. 

 Describes Acarus ypsilophorus. 



Bruzelius, Ragnar Magnus. 



54. Beskrifning ofver Hydrachniden, som forekomma inom Skane. 

 Akad. Abhandl. Lund, 1854. 



Restricted the genus to the limits since recognized; includes in ob- 

 servations A. crassipes and Coch. spinipes. 



Note. — In this bibliography no mention has been made of articles 

 which are simply records of occurrence. The different references are in- 

 dicated by date, together with letter following when necessary. The 

 designation given to each reference corresponds to that in the card cat- 

 alogue of the author, which is believed to be complete, aud in which the 

 sequence adopted is carefully chosen to indicate the order of publication. 

 This designation is here retained to preserve a uniformity of citation in 

 this and other papers. 



