1887.] PERIPATUS FROM BRITISH GUIANA. 137 



(29) Gaffron, E. Beitrage zur Anatomie und Histologie von 

 Peripatus. Zool.Beitr. (Schneider), i. Taf. vii.-xii. pp. 33-60. 

 1883. Also <o?M. C27. Taf. xi., xii., xiii., pp. 145-162. 1885. 



Account of the anatomy and more particularly the histology of 

 Peripatus edwardsii from Trinidad, with 32 pairs of legs. 



(30) Kennel, J. Entwicklungsgeschichte von Peripatus. Zool. 

 Anz. vii. pp. 531-537. 1883. 



A preliminary notice, containing a description of P. torquatus 

 from Trinidad. 



(31) Kennel, J. 'E,nimck\\\x\gs^esc\\\c\ite\ox\ Peripatus edwardsii, 

 Blanch., unA Peripfaus torquatus, n. sp. Theil I. Mit Taf. v. 

 bis xi. Arbeit, zool.-zoot. Inst. Wiirzburg, vii. pp. 95-228. 

 1885. Theil II. Mit Taf. i. bis vi. Arbeit, zool.-zoot. Inst. 

 Wiirzburg, viii. pp. 1-93. 1886. 



An account of the development of the American species of Peri- 

 patus, which are characterized by the absence of food-yolk in the 

 ova, and by the presence of a (so-called) placenta. The specimens 

 examined were obtained from Trinidad. 



(32) Sedgwick, A. On the Fertilized Ovum and Formation of 

 the Layers of the South-African Peripatus. Proc. Hoy. Soc. 

 xxxix. pp. 239-244. 1885. 



Preliminary account of no. (33). 



(33) Sedgwick, A. The Development of the Cape Species of 

 Peripatus. Part I., with pis. xxxi., xxxii. Quart. J. Micr. 

 Sc. XXV. pp. 449-446. 1885. Part II., with pis. xii.-xiv. 

 Quart. J. Micr. Sc. xxvi. pp. 175-212. 1886. 



The first part contains the first mention of P. balfouri, distin- 

 guished by having IS pairs of legs ; it also contains an account of 

 the generative organs, segmentation, and general development of the 

 embryo. Part II. contains a further account of segmentation and 

 early stages. 



(34) Branner, J. C. Peripatus in the Island of Marajo, Ama- 

 zons. Nature, xxxiv. p. 496. 1886. 



(35) HoRST, R. On a specimen of Peripatus, Guild., from Su- 

 matra. Notes Leyd. Mus. viii. pp. 37-41, pi. ii, fio-s. 1-5. 

 1886. 



Description of a specimen of Peripatus with 24 pairs of claw- 

 bearing legs, from Sumatra. 



(36) QuELCH, J. J. Peripatus in Demerara. Nature, xxxiv. 

 p. 288. 1886. 



(37) Stuhlmann, F. Die Reifung des Arthropodeneis. Pp. 1- 

 128, Taf. i.-iv. Freiburg-i.-B. 1886. 8vo. 



Account of the ovary and ovarian ovum of P. edwardsii. Pp. 89- 

 93. 



