106 
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j J. de FAnat. Phys. 1875, pp. 329-333, pi. x. 
Gulliver, G. On the red blood corpuscles in Fishes. P. Z. S. 1875, 
p. 479. 
His, W. 'Untersuchungen iiber die Entwickelung von Knochenfischen. 
besonders iiber diejenigen des Salmens. Z. Anat. Entwickel. i. 
(1875) pp. 1-46, 2 pis. 
PoucHET, G. Du developpement du squelette des poissons osseux. 
J. de FAnat. Phys. 1875, pp. 288-309. 
The author attempts to trace microscopically the first appearance of 
hard or skeletal elements in the soft tissues, following out their further 
development and specialization. 
Retzius, G. Gehorlabyrinth der Knockenfische. Stockholm : 4to, 
6 pis. 
On the auditory apparatus of osseous fishes. A summary of this 
memoir is printed in J. Zool. iv. pp. 179-184. 
Schenk, S. Die Kiemfaden der Knorpelfische wahrend der Entwicke- 
lung. Wien : 8vo, 12 pp. 1 pi. 
Tomes, C. On the development of the Teeth of Fishes (Elasmobranchii 
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I Brain of Fishes. An abstract of the results of examination of a large 
! number of preparations collected by G. Fritsch during an expedition in 
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- / Embryogeny of Fishes. A summary of a memoir, by Van Bambeke, 
I, to be published shortly, appears in Bull. Ac. Belg. (2) 1875, pp. 75-84. 
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The General Subject. 
POEY, F. Plantilla Descriptiva Ictiologica. An. Soc. Esp. iv. pp. 
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With the laudable object of promoting comprehensiveness, regularity, 
and exactitude in Ichthyological descriptions, the author has put forward 
a general plan, drawing attention to the different points in which the 
diagnosis of every species should be precise and explicit. Fortunately 
some authors have long since recognized the absolute necessity of being 
thus rigidly systematic in their descriptions ; but as this has not been 
universally the case, the present code of rules, comprising as it does clear 
. definitions of parts and terms, cannot fail to be of service. 
Directions for the collection and preservation of Ichthyological 
' specimens, are contributed by Dr. Gunther, in G. Neumayer’s ‘ Anleitung 
zu wissenschaftlichen Beobachtungen auf Reisen,’ Berlin: 1875, 8vo, 
, pp. 397-402. 
