382 Annals of the South African Musenm. 



or fifth joint of the second peraeopods unsegmented, simple, while 

 that joint is divided into two or more segments in the Processidae, 

 Alpheidae, Hippolytidae, and Pandalidte. Both these groups agree 

 in having exopods usually entirely absent from the peraeopods, or 

 present only on the first pair. The Oplophoridae and some other 

 families are distinguished from the foregoing by having exopods on 

 at least four pairs of peraeopods. 



Family CEANGONID^. 



1853. Crangonidce, Bell, British Stalk-eyed Crustacea, p. 255. 

 1900. C, Stebbing, S.A. Crustacea, pt. 1, p. 46. 

 1903. C, Gurney. Proc. Zool. Soc, London, p. 24. 

 1905. C, Stebbing, S.A. Crustacea, pt. 3, p. 92. 



1910. C, Kemp, Fisheries, Ireland, Sci. Invest., 1908, I. [1910], 

 p. 134. 

 Here also a valuable synoptic view of the genera is supplied 

 by Mr. Kemp. 



Gen. CEANGON, J. C. Fabricius. 

 1798. Crangon, Fabricius, Suppl. Ent. Syst., pp. 387-409. 

 1907. C, Caiman, National Antarctic Exp., Nat. Hist., vol. ii., 



Decapoda, p. 3. 

 1910. C, Kemp, Fisheries, Ireland, Sci. Invest., I. [1908] , pp. 135, 

 136. 

 The genus Crangon is to be attributed to Fabricius, not 

 Linnaeus. The latter author only used crangon as a specific 

 name. As to the publication of the generic name Crangon by 

 F. Weber in 1795, I have already expressed my opinion of its 

 futility in the Journal of the Linnean Society, vol. xxix., 

 p. 332, 1905. 



Crangon capensis, Stimpson. 

 1860. Crangon capensis, Stimpson, Pr. Ac. Sci. Philad., p. 93 (24). 



Taken in Simon's Bay, Cape of Good Hope, from a depth 

 of 22 m. Length of specimen 22-5 mm. Dr. Caiman (loc. 

 cit., p. 4) observes that " with the exception of the very 

 imperfectly known C capensis, Stimpson, from the Cape of 

 Good Hope, C. antarcticus is the only species of the genus 

 inhabiting the Southern Hemisphere." 



