30 Gen , Sub. 
GENERAL SUBJECTS. 
[Prenant, A.] Observations cytologiques sur les elements seminatix deS 
Reptiles. Cellule, iv, 1, pp. 181-197, 1 pi. [Cf. C.R. Soc. Biol, v, 1.] 
In spermatogonia, seminiferous or germinative cells, the “ nebenkem ” 
appears as a granular crescent in the protoplasm. Its history is traced in 
the nematoblasts and spermatozoa, the parts of w hich are elaborately 
described. 
Note sur la structure des spermatozoides chez l’homme. C.R. 
Soc. Biol, v, 12. 
Robert, E. Sur la spermatog^nese chez les Aplysies, C.R. cvi, pp. 
422-425. 
Two different modos of spermatogenesis exhibited by the same species. 
Sabatier, A. Sur les formes des spermatozoides do PElddone musqude. 
T. c. pp. 954-956. 
Sanfelice, F. Spermatogenese des Vertebres. Arch. Ital. Biol, x, 1, 
pp. 69-122, 1 pi. 
. Spermatogenesi dei Yertebrati. Boll. Soc. Nat. Napoli, ii, 1, pp. 
42-98, 3 pis. 
Virtually a constant type in Vertebrata ; in Mammals and Saurojpsida 
spermatoblasts form spermatozoa plus expulsive and nutritive products, 
in Amphibians and Selachians the spermatoblasts form only spermatozoa ; 
Amphibian spermatogenesis is a median type ; the germinal cells — fixed 
cells of Sertoli, “ cellules de soutien” of Merkel — represent the matrix of 
the spermatic epithelium ; both chromatic and achromatic portions of the 
spermatozoa have nuclear origin ; &c. 
4 . Sex and Reproduction . 
Balbiani, E. G. Recherches expdrimentales sur la m^rotomie des 
Infusoires cilies. Contribution a l’etude du role physiologique du 
noyau cellulaire. I Partie. Rec. Z. Suisse, v, 1, pp. 1—72, 2 pis. 
Barfurtii, D. Die Regeneration des Ampliibienschwanzes. Anat. Anz. 
iii, pp. 403-405. 
Barroih, Tii. Remarquos sur le dimorphism® sexuol chez quclqucs 
amphipodes du genre Mcera. Bull. Soc. Z. Fr. xiii, 2, pp. 57-59. 
Bergendal, D. Mannliche Copulationsorgane am ersteu abdominalen 
Somite einiger Krebsweibchen. CEfv. Ak. Forh. xlv, No. 5, pp. 343- 
346. 
Boclenger, G. A. On the “Nursing” habits of Dendrobates, as 
observed by A. Kappler. Ann. N. H. (6) i, pp. 454 & 455. 
The young tadpoles gather round and suck on to the parent. 
Brady, H. B. Note on the Reproductive Condition of Orbitoliies com* 
planata var. laciniata. J. R. Micr. Soc. 1888, pp. 693-697, 1 pi. 
Inter idid i notes on the possible sexual dimorphism of Foraminifera . 
