1 34 Miscellaneous. 



These statistics are sufficieut to show the character of the work, 

 and we confess that, for our part, we cannot perceive any other 

 ultimate purpose in it than the creation of a supremo contempt in 

 rational persons for such so-called science, and a feeling of hopeless 

 confusion in the minds of students, especially young inquirers. 



MTSCELLAXEOUS. 



On two new Types of ChoniostomatidiB from the Coasts of Frani-e : 

 SphaBronella microcephala, G. ij* B., and Salenskia tuberosa, 

 G. ^- B. By M^I. A. Giaed and J. Uoxnieb, 



^^'E have shown in a previous memoir * that tho family Chonio- 

 stomatidoe, established by Hansen for the single genus Choniostoma, 

 ought to include, besides forms which Krijyer and Max Weber 

 partially discovered some time ago, a new genus discovered by us 

 upon a Mysis already attacked by an Epicarid, and lastly the 

 enigmatical Copepod Sph(f:ronella Leuc/carti, so well investigated by 

 Salensky. 



Hitherto no crustacean belonging to this family had been met 

 with on the shores of France, Upon the occasion of our note upon 

 Podascon DtUavallei, an Epicarid parasite ©f AmpeJisca diadema, 

 Costa, M. Chevreux sent us a certain number of specimens of 

 AmpeUsca spinipes, Boeck, A. tenuicornis, Lilljeborg, and A. spini- 

 mana. Chevreux, collected at Le Croisic, and which he thought were 

 infested by Podascon. A careful examination of these Amphipods, 

 which were all females, convinced us that a single specimen of 

 A. spinimana bore a Podascon belonging to a new species, Podascon 

 Chevrevxi, G. & B. 



All the other parasites were, not Epicarid Isopods, but Copepods 

 of the family Choniostomatida\ belonging to two different genera. 

 The parasite of AmpeUsca tenuicornis is a Sp1n^ronella distinct 

 from the ^Mediterranean species studied by Salensky : we shall 

 designate it (Sy>/<(rryrt(//« niicroctpJuiIa. The parasite of ^i. 5y)/*i}y)<'S 

 l»elongs to a new genus : we shall give it tho name of Salcn/kia 

 ttdjerosa, in honour of the eminent liussian zoologist to whom we 

 owe the first explicit information upon the evolution of the 

 Choniostomatida}. 



These two species of parasites are found surrounded by their 

 numerous sacs of ova in the brood-chambers oHhe AmpeUsca, which 

 are rendered barren in consetiuence of j^arasitic sterilizafion (cas- 

 tration parasitaire). The broinl-lamelhe are often caused to gape 

 widelv, allowing grains of sand and other foreign bodies to enter, 

 which never h;ij)pens when the An>2h'}i.^C(r are carrying their eggs 

 or are in the normal non-gravid condition. 



In spite of the most minute investigation of the four infected 

 individuals, we have been unable to find a single male of SpJurro- 



* Giard and 15onnier, "Note sur VA$pi(la:cia Xorma/ii et la f ami He 

 (ies Chouiostoiimlida>,'' Itnllotiu scieiititiiiue de la France et de la 

 Relgique, t. xx. If^SD, pp. •'{■41 ."372 ; lour figures in tlie text, and pb. x. & xi. 



