On South-African Talltricla3. 435 



LIII. — South- African Talitridse. By the Rev. Thomas 

 R.'R. Stebbing, M.A.,"F.R.S. 



While Dr. (Jhilton is reviewing the New Zealand members 

 of this family, Mr. H. W. Bell-Marley is making interesting 

 additions to the account given by Mr. Keppel Bernard of those 

 which occur in South Africa. Tlie trustees o£ the Durban 

 Museum desire to have the records of the local fauna printed 

 as well as published in Natal. Owmg to this not unnatural 

 species of patriotism, a rather long interval occurs before 

 results arrived at in England can be passed tlirough so 

 distant a press. This may excuse the inconvenience of a 

 brief preliminary notice for what I hold to be a new genus 

 and species. At the end of October I received from Mr. Bell- 

 Marley a number of Talitrid specimens, reddish-orange in 

 colour as preserved, which he had found on Durban beach. 

 He noticed that several were pairing, and the collection 

 proved to have females, crowded with young ones, as well as 

 males. After comparison of the latter sex with the synopses 

 of the family drawn up in 1899 and 1906 and with subse- 

 quent notices, it seemed clear that the species could not 

 belong to any of the known genera except Hyalella. But 

 when a female specimen was examined in iis turn, it showed 

 a striking difference from all other species of that genus, 

 numerous as they are. I therefore propose for these specimens 



Genus ExHTALELLA, nov. 



In general agreement with Hyahlla, but having in the 

 female the second gnathopod constructed like that of the 

 male. 



Exhyalella natalensis, sp. n. 



The telson undivided, its distal margin not rounded, but 

 obtuse-angled ; the third uropod with narrow ramus shorter 

 than the peduncle. 



Full details and illustrative figures are reserved for future 

 publication. 



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