142 STALK-FA'ED CRUSTACEA. 



This species, which was captured near the shores of the Galapagos 

 Islands, is comparable with G. aculcata A. M. Edw., G. rcgalis Bate, G. in- 

 vcsHgatoi-is W.-M., and G. smilhii W.-M. It differs from all of these in having 

 three pairs of rostral spines in front of the gastro-frontal sulcus, and in the 

 leno-th, sk'nderness, and strong outward trend of the hepatic spines. It dif- 

 fers furthermore from G. aculcata and G. invcstigatoris in being much more 

 lic-htly tuberculated ; from G. aculcata and G. smiildi in lacking the spine at 

 anterior end of the third carapacial carina, behind the cervical groove ; from 

 all of the above-named species, except G. invest i(/atom, in the spiny arma- 

 ture of the telson. 



Glyphocrangon nobilis A. M. Edw. ? 



? Gbjphocrangon nohile A. M. Edw., Auu. Sci. Nat., Zool., 6'™ Ser., Vol. XL, No. 4, p. 5, 1881 ; Recueil de 

 Figures de Crustaces uouveaux ou peu conuus, 1883 (fig.). 



Of Ghjphocmngon nobilis A. M. Edw., I have only small, immature speci- 

 mens before me, and I am not sure that the " Albatross" specimens here 

 referred to this species are really the same. In any event they are very 

 closely allied. In typical specimens of the " Albatross" species, the distance 

 from tlie tip of tlie rostnun to the small tubercle that lies in tiie median dorsal 

 line at the anterior boundary of the gastric region is equal to the distance of 

 this tubercle from the ]iosterior margin of the carapace, measured along the 

 median dorsal line. But the length of the rostrum varies to a considerable 

 degree in different specimens. When it attains its maximum length, the dis- 

 tance from the tip to the basal lateral spines alone equals the length of the 

 rest of the carapace, measured along the median lino. The margins are 

 thickened and concave between the two pairs of lateral si)ines. A median 



