CARCINOLOGICAL STUDIES. 79 



granulated crest, proceeding upon the immobile finger. The 

 inner surface of the palm is armed with a spine in both 

 species and hairy like the inner surface of the fingers. 

 The latter are almost as strongly deflexed in Macr. carini- 

 manus as in Macr. crassipes and agree much in both 

 species; the basal tooth of the dactylus however is com- 

 paratively a little broader, and the tooth of the index compara- 

 tively a little smaller than in Macr. crassipes. The fingers 

 of Macr. crassipes are also a little more slender and the 

 dactylus is slightly more arcuate. 



The dimensions of our specimen of Macr. crassipes are : 

 Distance between the external orbital angles 22 '/2 mm. 

 Length of the cephalothorax 10^4 » 



The cephalothorax of the Paris specimen of Macr. cras- 

 sipes is almost 15 mm. long. 



The dimensions of two males of the two other species 

 are as follows : 



Macr. Macr. 



carinimanus. dilatatus. 

 Distance between the external orbital 



angles 2P|2 mm. 26^/3 mm. 



Length of the cephalothorax . . . 972 » 12'74 » 



Macr. crassipes H. Milne Edw. has hitherto only been 

 recorded from the coast of New Holland. 



19. M a c r p h t h a I m u s pacificus Dana. 

 (PI. 4, fig. 10). 



Macrophthalmus pacificus, Dana, 1. c. p. 314, PI. XIX, fig. 4. 

 Macrophthalmus bicarinatus, Heller, Novara-Reiae , p. 36, PI. IV, 

 fig. 2. 



The Leyden collection contains four specimens of which 

 the locality is unfortunately unknown, one male and three 

 females, none of which is provided with eggs. The latter 

 fact is remarkable , because the original specimens , described 

 by Dana and Heller, were of a still smaller size. 



JN^otes from tlae Leyden M.u.seuiii, V^ol. XJl. 



