THK MALAYAN SPECIES OF ONYGHOPUORA. 41 



On the Malayan Species of Onychophora. 



Part II. — The Development of Eoperipatus weldoni. 



Riclisiifl Evans, M.A., B.Sc, 



Of Jesus College, Oxlord. 



Witli Plates 5—9. 



Contents. 



PAGE 



42 

 42 

 43 

 48 

 48 

 50 

 53 

 55 

 57 

 57 



I. Introduction ...... 



II. The Ovum ...... 



III. A General Account of tlie Uevelopmeut viewed extei iially 



IV. The Uevelopuient of the Genu Layers, etc. 



(1) The First Embryo .... 



(2) The Second Embryo .... 



(3) The Third Embryo .... 



(4) The Fourth Embryo .... 

 V, The Development of the Mesodermal Organs 



(1) The Development of the Mesoderm and its Cavities 



(2) The Development and Disappearance of tiie First Somite 61 



(3) The Development and Disappearance of the Second Somite 62 



(4) The Development of the Third Somite . . .63 



(5) The Development of the Generative Organs . . 63 



(6) The Development of the Last Somite (Male Accessory 



Gland) 



VI. The Development of the Nervous System and Ventral Organs 

 VII. The Development of the Eye 

 VIII. The Endoderm . 

 Conclusion 

 List of References 



Explanation of Plates 



