334 CRUSTACEA OP NORTHUMBERLAND AND DURHAM 



Rhynchotalona falcata (G. O. Sars). 



1862. Harporhynchus falcahts, G. O. Sars, Om de i 

 Omengen af. Christiania forekommende Cladocerer, 

 Forhand. Videns-Selsk. Christiania, 1861, p. 41 

 (separate copy). 



1867. Lynceus falcatus, Norman and Brady, I.e., p. 387, 



pi. xviii., fig. 4, pi. XX., fig. I. 

 1884. Leptorhynchis falcatus, C. L. Herrick, Final Report 



on the Crustacea of Minnesota, p. 114, pi. i., fig. 17. 

 1901. Leptorhynchus falcatus, Lilljeborg, I.e., p. 488, 



pi. Ixix., figs. 22-26, pi. Ixx., figs. 1-5. 

 1903. Rhynchotalona falcata, Norman, New generic names 



for some Entomostraca and Cirripedia. Ann. and Mag. 



Nat. Hist., ser. 7, vol. xi., p. 367. 



Sars' generic name Harporhynchis being pre-occupied, 

 Herrick substituted Leptorhynchus, an unfortunate choice, as 

 the name had been more than once previously used, and 

 therefore Dr. Norman has re-named the genus Rhynchotalona, 



Greenley Lake, Northumberland (A. M. N.), and Sweethope 

 (G. S. B.) . N. 



Leydigia Leydigii (Schodler). 



x86o. Lynceus quadrangularis, Leydig (nee Miiller), 

 Naturgesch. der Daphniden, p. 221, pi. viii., fig. 50. 



1863. Alona Leydigii, Schodler, Neue Beitrage zur Natur- 

 gesch. d. Cladoceren, p. 27. 



1874. Leydigia quadrangnlaris, Kurz, Dodekas neuer 

 Cladoceren (separate copy), p. 52, pi. ii., fig. 2. 



1901. Leydigia quadrangulai-is, Lilljeborg, i.e., p. 494, 

 pi. Ixx., figs. 6-17, pi. Ixxi., figs. 1-3. 



Schodler was undoubtedly right in re-naming this species, 

 because the specific name qnadrangularis, as used by Leydig, 

 was that of another species described by Miiller, and mis- 

 applied by Leydig to the present form. 



The specimen assigned to Lynceus acanthocercoides by Brady 

 and Norman (I.e., p. 385, pi. xix., fig. 5, pi. xxi., fig. 7), was 

 really the present form, and not that described by Fischer. 



