6o SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 1 37 



Evans, R. 



1902. On the Malaj'an species of Onychophora, pt. II. The development of 

 Eopcripatn^ weldoni. Quart. Journ. Micr. Sci., vol. 45, pp. 41-88, 

 pis. 5-9. 

 Federov, B. 



1929. Zur Anatomic des Nervensystems von Peripatus. II. Das Nerven- 

 system des vorderen Korperendes und sein Metamerie. Zool. Jahrb., 

 Abt. Anat., vol. 50, pp. 279-332, pis. 6, 7. 

 Hanstrom, B. 



1935. Bemerkungen iiber das Gehirn und die Sinnesorgane der Onychoph- 

 oren. Lunds Univ. Arsskr., N. F., Avd. 2, vol. 31, No. 5, 38 pp., 

 22 figs. 

 Henry, Laura M. 



1948. The nervous system and the segmentation of the head in the Amiu- 



lata. Microentomology, vol. 13, pt. 2, pp. 27-48, figs. 10-16. 

 Holmgren, N. 



1916. Zur vergleichenden Anatomic des Gchirns von Polychacten, Ony- 



chophoren, Xiphosuren, Arachniden, Crustacean, Myriopoden und 



Insektcn. Svenska Vet. Akad. Handl., vol. 56, No. i, 303 pp., 12 pis. 

 Kennel, J. von. 



1884-1888. Entwicklungsgeschichte von Peripatus forqnafus n. sp. Arb. 



Zool.-Zootom. Inst. Wurzburg, vol. 7, pp. 95-229, pis. 5-1 1; vol. 8, 



pp. 1-93. pis. 1-6. 

 Manton, S. M. 



1937. Studies on the Onychophora. VI. The feeding, digestion, excretion, 



and food storage of Pcripatopsis. Philos. Trans. Roy. Soc. London, 

 ser. B, vol. 227, pp. 412-463. 



1949. VII. Early embryological stages of Pcripatopsis, and some general 



considerations concerning the morphology and phylogeny of the 

 Arthropoda. Philos. Trans. Roy. Soc. London, ser. B, vol. 233, 

 pp. 483-580, pis. 31-41, text figs. 1-7. 

 Pflugfelder, Otto. 



1948. Entwicklung von Parapcripatus amboincnsis n. sp. Zool. Jahrb., Abt. 



Anat., vol. 69, pp. 443-492. 

 Sedgwick, Adam. 



1885. The development of Peripatus capcnsis, pt. I. Quart. Journ. Micr. 

 Sci., vol. 25, pp. 449-468, pis. 31-32. 

 Snodgrass, R. E. 



1935- Principles of insect morphology. 667 pp., 319 figs. New York and 

 London. 



1938. Evolution of the Annelida, Onychophora, and Arthropoda. Smith- 



sonian Misc. Coll., vol. 97, No. 6, 159 pp., 54 figs. 

 Tiegs, O. W. 



1949. The problem of the origin of insects. Australian and New Zealand 



Assoc. Advancement Sci., Rep. 27th Meeting, Sect. D, pp. 47-56, 

 4 figs. 

 Weber, Hermann. 



1952. Morphologic, Histologic und Entwicklungsgeschichte der Articulatcn. 

 Fortschr. Zool., N. F., vol. 9, pp. 18-231, 24 figs. 



