THE OSTEOLOGICAL CHARACTERS OF THE 

 GENUS SEBASTOLOBUS. 



BY EDWIN CHAPIN STARKS. 



Biological Survey, Washington. D. C. 



CONTENTS. 



Page. 

 Plates XXII-XXIV. 



Introduction 361 



A. Descriptive 362 



I. The Skull 362 



II. Suspensorium, Mandible, and Opercular Ap- 

 paratus 363 



III. Shoulder-girdle 364 



IV. Vertebral Column 365 



V. Anal and Dorsal Interspinous Rays 366 



VI. Hyoid Apparatus 366 



VII. Branchial Arches 366 



VIII. Orbitals and Nasals 367 



B. Comparative 367 



Significance of Reference Letters 370 



In this paper the more important skeletal structures of 

 the genus Sebastolobiis are described somewhat in detail. 

 This fullness in description is justified by the fact that the 

 osteology of this genus has not hitherto been worked out 

 and that its place among related genera has been determined 

 chiefly from an examination of external characters. 



The first part of the present paper is wholly descriptive 

 in character, while in the second part an attempt has been 

 made to point out the resemblances of this genus to the 

 other members of the Scorpaenidee and other families of 

 mail-cheeked fishes. 



The species whose skeleton has been taken for study is 

 Sebastolobiis alascanus Bean. The specimen was about 9 

 inches long. 



The plates illustrating this article are from drawings by 

 Chloe Lesley Starks. 



[361] Dec. 20, 1898. 



