Contributions to the Crustacean Fauna of South Africa. 327 



(3rd peraeopod) or 7 (4th) spine-teeth, upper margin setose, 7th 

 f length of 6th, curved, a seta in place of the secondary uuguis. 



Peraeopods 5 and 6 similar to the preceding, 4th joint with 3 spine- 

 teeth on lower apex, 5th with 2 rows of 4 and 5 spine-teeth on lower 

 margin, 6th equal to 5th, lower margin with 5 spine-teeth, upper apex 

 with several serrulate setae, 7th f length of 6th, as in the preceding 

 peraeopods. 



Peraeopod 7 similar but no teeth on 4th and 5th joints, lower 

 margin of 6th with 4 spine-teeth. 



Pleopods reduced to the 3 anterior pairs, each biramous, the rami 

 narrow, uuiarticulate, inner a little longer than outer, both fringed 

 with plumose setae. 



Uropod, peduncle short, outer ramus 3-jointed, inner at least 

 9-jointed. 



Length: 6 mm. ; breadth : 1"25 mm. 



Colour : In spirit pale brownish or yellowish, eyes dark. 



Locality : 33 6' S., 28 11 ' E. (off East London). 85 fathoms. <$ <$ , 

 ovigerous 9 9 an( i J uv - ; Umkomaas River NW. by W. | W., distant 

 5 miles. (Natal) 40 fathoms. 1 juv. ; Hood Point N. by W. > W.. 

 distant 11 miles. 49 fathoms. 1 ovigerous $ ; Nanquas Peak N. f W., 

 distant 21 miles (Algoa Bay), 63 fathoms. 1 <$ , 1 juv.; between 

 Roman Rock and Cape Recife. 17 fathoms. 1 ^ ; s.s. " Pieter 

 Faure." 28/1/99, 31/12/00, 15/7/01, 23/9/01 and 12/12/98. (S.A.M. 

 Nos. A4122-4, A4176 and A4553.) 



Besides the outstanding features mentioned in the diagnosis of the 

 genus, there is one other which is almost equally remarkable, namely, 

 the exopod of the 2nd peraeopod. This is very much larger than in 

 any other species in the family, although Pagurapseudes spinipes 

 Whitelegge makes a somewhat near approach in this respect. 



The large size in the present species is evidently due to the environ- 

 ment. The specimens were taken amongst sponges on muddy ground 

 and all were coated and clogged with a very fine deposit. Especially 

 so was this in the case of the setae, making it sometimes difficult to 

 say whether the setae were plumose or simple, as it is quite impossible 

 to remove the deposit completely. 



In such surroundings the branchial cavity would soon become 

 choked and useless, were it not for the effective strainers at its 

 entrance. The inhalent current has to pass through 4 series of 

 plumose setae before reaching the branchial cavity ; first the fringe of 

 setae on the postero-lateral margin of the carapace, then that on the 

 posterior (upper in the natural flexed position of the limb) margin of 

 the 2nd joint of the 1st peraeopod, then that on the anterior margin 



