ANATOMY OF A FCETUS OF BAL^NOPTERA BOREALIS. 

 BY H. VON W. SCHULTE. 



* 



PLATES XLIII-LVII. 

 CONTENTS. 



PAOE 



INTRODUCTION 304 



MEASUREMENTS one. 



oyo 



EXTERNAL ANATOMY .... 399 



Coloration ggg 



Hairs 399 



Outline 399 



Head 401 



Eve 401 



Ear .... 401 



Ll P s .... 401 



Naso-vomerine organ 402 



Flipper . 402 



Hum P 403 



Vulva 403 



Anus 403 



MYOLOGY 403 



Panniculus carnosus ............. 404 



Cavum ventrale ... 40g 



Musculature of ventral pouch . . . 406 



Sterno-mandibularis and associated muscles . . . 409 



Muscles of mastication 410 



Facial muscles 412 



Extrinsic muscles of eye 414 



Muscles of tongue , 415 



Infrahyoid muscles ... .. .... 416 



Suprahyoid muscles 417 



Trapezius complex . 417 



Ventro-appendicular musculature ........ . 41g 



Trachelo-costo-scapular muscles . . ...... 419 



Rhomboideus . . 4.10 



Tt A tJ 



Scapulo-humeral muscles ........ . 419 



Intrinsic muscles of flipper 42Q 



Abdominal muscles . 421 



Pelvic musculature 423 



Intercostals . 433 



Diaphragm - . ... 423 



Hypaxial musculature ......... 424 



Dorsal musculature . . ... . 427 



Spino-costal muscles . 427 



Spino-dorsal muscles . ... . 427 



UPPER ALIMENTARY TRACT . . _ 431 



Cavum oris proprium . ... 431 



Fauces ... . 432 



1391] 



