Arenicola glacialis 



113 



The original specimens were sent recently to the writer, 

 who has shown that A. glacialis is a distinct species, and has 

 given the first description of its more important features. 



NOT'.--- 



CE.GL. 



'---BR'. 



D.V. 



Fig. 47. A. glacialis. Diagram of a dissection of the 

 anterior portion. BRi. First gill ; D.V. Dorsal blood- 

 vessel ; H. Heart ; NOTI. First notopodium ; NPHI. 

 First nephridium ; (E.Gt. (Esophageal gland ; PR. 

 Prostomium ; S'. First septum ; S.P. Septal pouch. 



EEMARKS ON THE TYPE SPECIMENS. Of the five original examples 

 only one is complete, another is in two parts held together by a 

 strand of muscle, the other three are in pieces. All are dark 

 brown or nearly black in colour. The complete specimen, shown 



i 



