South African Crustacea. 37 



ISOPODA. 



TRIBE FLABELLIFERA. 

 FAMILY EURYDICIDAE. 



GEN. CIROLANA, Leach. 

 (For references see these Annals, vol. 6, pt. 4, pp. 419, 421.) 



ClROLANA CRANCHII, Leach. 



1818. Cirolana cranchii, Leach, Diet. Sci. Nat., vol. 12, p. 347. 

 1890. Hanseu, Vid. Selsk. Skr., ser. 6, vol. 5, pp. 



321, 341, pi. 3, figs. 3-31. 



In these Annals, vol. 10, pt. 11, p. 351a, pi. 30u, 1914, Mr. 

 Barnard describes and illustrates Cirolana vicina, n. sp., distin- 

 guishing it from C. cranchii, Leach, and C. parvus, Hansen. It 

 is a case somewhat parallel to one previously mentioned, but 

 here concerning species instead of geneva. C. vicina seems to 

 tie C. parvus so closely to C. Cranchii that one name may well 

 serve for all three. 



The specimen which I have especially examined has the male 

 stilet of the second pleopod well developed. It agrees thoroughly 

 in shape with Hansen's fig. 3i of the male telson and uropod 

 of C. cranchii, the rami being acute, not sub-bifid. The number 

 of the spines on the telsonic apex is 12. Thus two of the five 

 characters relied 011 for distinguishing C. vicina are wanting. 

 The rather uncertain difference in size of specimens, between 

 15 and 13 mm., surely is not of specific importance, and the 

 comparative slenderness of the legs is not a very striking 

 feature. There is still the distinction that in the second 

 gnathopods and first peraeopods the fourth joint is not produced 

 externally in C. vicina as it is in C. cranchii. Yet even in 

 that respect specimens show that the non-production is far 

 from absolute. 



Locality. Sebastian Bay, beach, low tide. No. 132. 



