20 Annals of the South African Museum. 



Lateral margin of carapace with spine behind 



the cervical groove G. spinosa, A. M.-E., 1880. 



Lateral margin of carapace without spine be- 

 hind the cervical groove G. rostrata, A. M.-E., 1880. 



GALACANTHA ROSTRATA, A. Milne-Edwards. 



1880. Galacantha rostrata, A. M.-E., Bull. Mus. Comp. Zool., 



vol. viii., p. 52. 

 1886. Munidopsis rostrata, S. I. Smith, Eep. U.S. Fish. Comm. for 



1885, p. 649 (45), pi. 6, f. 1. 

 1900. Galacantha rostrata, M.-E. and Bouvier, Crust. D6cap. Travail- 



leur et Talisman, p. 308, pi. 6, f. 9. 



Other references and synonyms may be gathered from those 

 already given for the genus. Professor S. I. Smith gives the figure 

 of a male 75 mm. in length. In the lateral view of the carapace he 

 shows a little median denticle in advance of the great gastric spine 

 and another at the base of its hinder slope, neither of which is 

 observable in the South African specimen. The latter is a female 

 with eggs, measuring 88 mm. from tip of rostrum to end of telson, 

 with the carapace 44 mm. long from tip of rostrum to the hind 

 margin, 31*5 mm. broad just behind the cervical groove, 39 mm. 

 between the tips of the hinder spines of the lateral margin. The 

 second antennae are 135 mm. long, and the right cheliped 56 mm. 

 There was no notable difference in length between the chelipeds. 



The lateral spines of the rostrum are well developed and slightly 

 divergent. As in the var. investigatoris, the sixth pleon segment 

 and the telson are tuberculate, though less strongly than the anterior 

 part of the pleon. The fingers of the ambulatory legs are delicately 

 serrate on the concave margin and hairy on the convex one. 



Locality. Cape Point N.E. by E. ^ E., 46 miles ; depth, about 

 900 fathoms ; bottom, green mud. 



This specimen appears to be the largest Galacantha hitherto 

 recorded. 



PAGUBIDEA. 



1905. Paguridea, Alcock, Indian Decap. Crust., Anomura, p. 1. 



GEN. CLIBANARIUS, Dana. 



1852. Clibanarius, Dana, U.S. Expl. Exp., Crust., vol. xiii., p. 461. 

 1905. Clibanarius, Aicock, Indian Decap. Crust., Anomura, p. 40. 



