EUEOPEAN POEMS OF THE CIEOLANIN^. 355 



adopt that given by the Preach author.— On PI. 34 I have 

 figured the mouth-limbs from the left half of a specimen ; 

 they show great similarity to those of G. japonica, H. J. 

 Hansen (Cirolanidae, pi. 4). 



11. CojS^ilera, Leach. 



The characters of the genus are given in the conspectus of the 

 genera. 



The genus comprises as yet only one marine species, C. cylin- 

 dracea, Mont, (and an American freshwater form). I have stated 

 above that Conilera grampoides, Grourret. does not belong to this 

 genus, but that the form is only Cirolana Cranchii, Leach. 



1. CONILEEA CYLIIfBEACEA, Moilt. (1803). 



1868. Conilera cylindracea, Sp. Bate & Westwood, Brit, Sess.-eyed Crust. 



vol. i. p. 304 [with figures]. 

 1890. Conilera cylindracea, H. J. Hansen, Cirolauidse, &c. p. 358, pi. iv. 



figs. 5-5 c ; pi. V. figs. 1-1 d [with synonymy, biology, &c.]. 



A detailed description, with several figures, of this character- 

 istic very slender form will be found in my paper quoted. It 

 is deemed sufficient to give here some remarks on dimension, 

 variation, and distribution. 



Length. — An egg-bearing female and a male from Naples 

 measured respectively 19'3 mm. and 20'5 mm, in length. Some 

 specimens in a very rich material from Eoscoff are considerably 

 larger — the largest one, a female without marsupium, measuring 

 28'7 mm. in length and 5*5 mm. in breadth. 



Variation. — In my previous paper I have drawn attention to 

 some utterances by Yves Delage in 1881 and R. Koehler in 

 1885. Delage writes that his Conilera from Eoscoff is perhaps 

 not identical with the species described by Bate & Westwood, 

 differing " par les antennes, par les appendices natatoires du 

 sixieme anneau abdominal et par des ponctuations rouges dont 

 les auteurs anglais specifient I'absence." Koehler quotes Delage, 

 and adds : " Je possede des Conilera de Naples dont les 

 caracteres s'accordent absolument avec la description des auteurs 

 anglais et dont les echantillons de Jersey different par les 

 caractei'es suivants : longueur des appendices du dernier anneau 

 abdominal, longueur des polls portes par le quatrieme article 

 des antennes inferieures, et enfin presence sur la carapace de 



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