460 Annals of the South African Museum. 



confused his new species with Cancer tuberosus, Pennant, since 

 Montagu is careful to explain why this confusion could not arise. 

 The other species which Milne Edwards has usefully dealt with 

 in the Atlas of the ' Kcgne animal ' has likewise experienced 

 some mystification in its specific name. Milne Edwards gives 

 it as Philyra globulosa, Leach. Now if Herbst can be trusted 

 Fabricius in the ' Syst. Ent.,' 1775, described a species as Cancer 

 globus. At any rate he gives this name in the ' Species Insec- 

 torum,' vol. 1, p. 497, 1781. But in 'Ent. Syst,,' 1793, he 

 changes the name to Cancer globosus, and wrongfully claims 

 Herbst as having agreed in the change. In the ' Suppl. Ent. 

 Syst.,' 1798, the name is further changed to Leucosia globosa, 

 which Milne Edwards in 1837 erroneously quotes as Leucosia 

 ylobulosa and proceeds to assign Philyra ylobulosa to Leach in 

 place of Philyra globosa for which he was in fact responsible, 

 whereas the correct name is Philyra globus (Fabricius). From 

 this the following new species, though similar in general aspect, 

 is generically sepai'ated by the third maxillipeds. The specific 

 name is a Latin word signifying a ball of thread. In its own 

 genus the species makes some approach to Ebalia diadumena, 

 Alcock, 1876, but is distinguished from it by much greater size, 

 deeper emargiuatiou of the front, median tooth of the hind 

 margin of the carapace, fingers of the chelipeds as long as the 

 palms. 

 Alcock, relying in part on de Man's researches, divides Cancer 



globus into two species, naming the female Philyra globosa, the male 



Philyra ylobulosa. 



EBALIA GLOMUS, n. sp. 



Plate CXII. 



The specimens to which I give this name deserve it, more especially 

 in the female sex, which roll about in an aggravating manner after 

 they have shed their limbs, as they thoughtlessly do. Besides the 

 difficulty which this instability causes in dissection of the delicate 

 mouth-organs, it has an indirect effect in exhibiting the surface of 

 this miniature globe so differently according to the angle of observation, 

 that figm-es of two views might be supposed to represent two distinct 

 species. The carapace of the female figured measured 8 - 5 mm. at the 

 broadest part, with a median length about the same. The carapace 

 of the male measured 6 mm. in breadth and the same in length. The 



