136 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



general rule, does not seem to be specifically linked in the Gonodactylus 

 forms, although I have found very characteristic markings in an Atlantic 

 variety of G. oerstedii.^'^ 



The drawings illustrating this paper, unless otherwise credited, are 

 the work of Miss Jane Roller, with the exception of figures \0d, Mb, 

 17c, 19, 21, and 24, which were made by Mr. Andrew Pizzini. Miss 

 Roller has also checked the drawings against the text and the legends 

 accompanying the figures, and has usefully assisted me in other ways. 



The magnification of the illustrations may be derived from a line 

 one millimeter in length that has been drawn beside each figure. 



24 G. 0. van spinulosus, Schmitt, Univ. Iowa Studies in Nat. Hist., Vol. 10, 

 No. 4, pp. 96-98, 1924. 



