DISTRIBUTION OF THE LYMPHATICS IN THE TAIL 

 REGION OF SCORP.ENICHTHYS MARMORATUS 



WILLIAM F. ALLEN 



From the Herzstein Laboratory of the Universilij of California, New Monterey, 



California 



TWELVE FIGURES 



INTRODUCTION 



This paper is a continuation of an earlier study. Since 

 Scorpsenichthys differs notably in several important details from 

 any of the many forms described by Favaro in his most compre- 

 hensive work it seems desirable to complete the distribution of 

 this system of vessels in this specialized species. 



Material and method of procedure. — Scorpsenichthys marmora- 

 tus, on which all the dissections were made, is one of the common 

 rockfish found all along the Pacific coast. The tails of Scorpsenich- 

 thys which were to be injected were severed a little anterior of 

 the caudal peduncle, and were so arranged in a pan that the cut 

 end was considerably higher than the tail end. The caudal artery 

 was then injected with a carmine gelatin mass, after which the 

 subcutaneous or lymphatic canals were filled with a Berlin blue 

 gelatin mass or in one or two cases, with India ink, from the longi- 

 tudinal neural trunk. In order to somewhat check up the work 

 microscopically, the small tide pool cottid, Clinocottus anahs, 

 a closely related species, was sectioned. As with Scorpansenich- 

 thys the tails of full grown adults were severed transversely a 

 little anterior of the caudal peduncle; when they were killed, fixed, 

 and macerated in Tellyesniczky's potassium bichromate-acetic 

 mixture for a period of about two weeks; after which they were 

 embedded in paraffin, cut 10 microns, stained in Heidenhain's 



THE AMERICAN JOURNAL OF ANATOMY, VOL. 11, NO. 1. 



