87 



Euiysileninni tiiiiicatiim on Haniiothoe iuibricnfa, L. In 1877 

 Kurz* published an account of Eimicicola Chnisii as a parasite 

 on Eunice Claparcdii, De Quatrefages. The same year an 

 important contribution by Levinsenf cleared up the ambiguity 

 connected with HcrpyUobiiis aniiciis, Steenstrup and Li'itken, 

 and, besides, added four new genera and species to the list, viz., 

 Sclloiilt's Bolbroci on HaiiiioiJio'c iiiibiicata, and a curious variety 

 on Gattviiiia ciirosa, Pallas, Rliodiiiicola cloii^aici on Rhodiiic 

 Lovcni, Malmgren, Bmdophihi pyonKva on Bnidii rillosd, H. 

 Rathke, Saccopsis TcrcbcUidis on TercbcUidcs Sfniiiii, Sars, and 

 Crypsidomiis Tcirbclhv on Aiiipliitrifc cirrata, O. F Miiller. In 

 the Annelids of the "Challenger " is recorded a new form attached 

 to the foot of Lcaiiim airohita, McIntosh,| from 345 fathoms, 

 south of Yedo, Japan, viz., Leaiiiricola roiiindata. List§ in 

 1890 gave a minute account of two forms, one of which — 

 Gdstrodclplixs Chnisii — had apparently been first observed on 

 the branchina of Bispini volutacornis, Montagu, by De St. 

 Joseph, II the other, (uistiodclpliys Myxicohv, from the branchiae 

 of Mxxicola iiifiiiidibiihiiii, Grube. The outline of (iasfivdclpJiys 

 Chnisii differs considerably from the form subsequently 

 described from South Africa, the latter having the appearance 

 of an Ergasihis, and closely approaching the Sabcllipliiliis Scnsii 

 of Claparede, the crustacean parasite of Spirognipliis Spalhnizani 

 in tlie Mediterranean. Various examples adhered to the largest, 

 an.d probably oldest, specimen of the annelid both dorsally and 

 ventrally, the anterior end being fixed in the fissure between 

 two segments, and they also frequented the branchiae, but they 

 were not confined to the dorsal edge of the branchior, most, 

 indeed, occurring on the pinnoe or close to their origin. 



The crustacean, which may provisionally be termed Sahclli- 

 philiis bispinv, parasitic on this annelid dift'ers from the (rcistiv- 

 dclplivs Chnisii as described by List,1[ and which he found on the 

 branchiae of Bispini volufdconns of Montagu from the Adriatic. 

 De St. Joseph had apparently obtained the same form on the 

 French coast some years previously — fixed by the rostrum and 

 ventral plate to the dorsal edge of the branchiii?, its long axis 

 being parallel to that of the rachis. He had provisionally 

 named it BispiropJiilus tciiax, but, as he himself observes, the 

 name of List has precedence, and he appears to have satisfied 

 himself that List was dealing with the same species. 



In outline the South African ectoparasite leans more to tl^e 

 typical Ergasilidae than GastrodclpJiys, which in the female is 

 narrow in front and broad behind, whereas the present form is 



* Sit/Aing-ber. Akad. Wiss. Wien, 1877. 



t Videiiskab. Meddcl, Nat. Forcii. Kjobenhavn. 



+ Ann. " Challenger," p. 133- Woodcut, Fig. 2. 



§ Zeit. f. w. Zool. xlix. Bd. p. 71 Taf. iv.-viii. 



jl Ann. Sc. Nat. 8e Ser. xvii. p. 292, 1894. 



\ Viik Dr. Thos. Scott, 20th Kept. S. F. B., Part III., p. 288. 



