South African Crustacea. 23 



1811. Pagurus incisus, Olivier, Encycl. Meth., vol. viii., p. 641. 

 1826. Pagurus incisus, Audouin, Savigny's Crust. d'Egypte, pi. 9, 



fig. 1. 

 1888. Pagurus striatus, Henderson, Challenger Anomura, Reports, 



vol. xxvii., p. 55. 

 1900. Pagurus arrosor, A. Milne-Edwards and Bouvier, Crust. 



Decap. Travailleur et Talisman, p. 178. 



1905. Pagurus arrosor, Alcock, Indian Decap. Crust., pt. 2, p. 168. 

 1907. Dardanus arrosor, M. J. Eathbun, notes to Stimpson's North 



Pacific Crust., Smithsonian Misc. Coll., vol. xlix., p. 206. 



As usual an elaborate synonymy is supplied by Alcock, of which only 

 a small part is here given. Various authors, beginning with Latreille 

 (vaguely) in 1803, have recognised the prior claim of Herbst's specific 

 name arrosor, and have nevertheless set it on one side. Latreille 

 took the same liberty with Bosc's strigosus, probably on the ground 

 that the word as used by the Romans meant lean or meagre, not, as 

 Bosc no doubt intended, full of strigce. The latter sense would have 

 been appropriate, because in this species the chelipeds and walking- 

 legs are thickly traversed by scales or scutes resembling the marks left 

 on a plot of grass freshly mown by a scythe. It is, however, worth 

 remembering that this kind of ornamentation is shared by some of 

 the species in two other genera, Aniculus, Dana, and Nematopagurus, 

 Milne-Edwards and Bouvier. 



Since this species is met with in all the tropical and subtropical 

 seas, it is not surprising that some forms should have received 

 varietal names. One of these was at first regarded as an independent 

 species by A. Milne-Edwards, under the name Aniculus petersi, 1880. 

 In 1892 Ortmann named a variety pectinata, and in 1906 Moreira 

 adds a var. divergens (Arch. Mus. Nat. Rio de Janeiro, vol. xiii., 

 p. 13, pi. 4, fig. l),in describing which he speaks of Pagurusinsignis, 

 de Saussure, as one of the varieties of P. arrosor. 



The species is said to attain a length of 7 or 8 inches. Milne- 

 Edwards and Bouvier remark in regard to the collections they were 

 examining, that it seems to attain its greatest dimensions towards 

 Spain, and to become more and more reduced in proceeding to 

 Senegal. The largest specimen sent by Dr. Gilchrist from South 

 Africa is 87 mm. long, with a carapace 35 mm. in length. With 

 this was a very small specimen. Some small specimens from 

 Durban belong to the Durban Museum. 



Locality (of large specimen). Great Fish Point Lighthouse, 

 N. ^ W., 2^ miles; depth, 30 fathoms; bottom, mud. 



