1899.] PARASITIC COPBPODA 0]sr FISHES. 479 



(G) ElCHIAEDIA SCLENT. 5 S • 



Philichtliys scicena Eichiardi, op. cit. 1875. 



„ C. Yogt, Arch. Zool. Exp. vol. vi. 1877, p. 412. 

 Host : lateral line of Scicena umbro. Mediterranean. 



(7) EiCHiARDiA DEN'Jicis. $ . (Plate XXVI. fig. 3.) 

 Philichtliys cleaticis Richiardi, op. cit. 1876, pi. vi. fig. 2. 

 Host : frontal sinus of Dentex vulgaris. Mediterranean. 



(8) ElCHIAEDIA BAEALDI. 



Fhilichthys haraldii Eichiardi, op. cit. vol. iii. 1876, pi. vi. fig. 5. 

 Host : frontal sinus of Chrysojihrys aurata. Mediterranean. 



G. 3. SPH^MFEit Eichiardi. (Sjjhcerosoma Leydig.) 



Female. Head small, obtuse. Body elongated, segmented ; first 

 thoracic segment slender, the second large and spherical, followed 

 by five diminishing joints, in the second of \Ahicli are seen the genital 

 pores ; there is a single pair of acute processes projecting from the 

 enlarged segment, and a pair of elongated appendages from the 

 last. The anterior antennae are triarticulate. Egg-sacs globular. 

 Male not known. 



(1) Sph^eiebb coryin^. 



Sphcerosoma corvince. Leydig, Arch. f. Natur. v. Trosch. xvii. 



1851, p. 259. 

 Sjjhcerifer cornutus Eichiardi, Soc. Toscana de Sc. Nat. ii. 1876. 

 : „ „ C. Vogt, Arch. Zool. Exp. vol. vi. 1877, p. 413. 



Host : mucous canals of Oorvina nigra and Scicena aquila. 



(2) Sph^eieeb levdigi. (Plate XXVI. fig. 4.) 

 Sphcerifcr leycUgi Eichiardi, op. cit. 1876, pi. vi. fig. 6. 

 Host: mucous sinus of Umhrina cirrhosa. Mediterranean. 



Gr. 4. COLOBOMATUS HessB. 



Female. Head round or conical. Body elongated, segmented ; 

 three narrow free thoracic joints followed by an enlarged oval 

 genital portion, and two or three slender abdominal joints; there 

 are three pairs of lateral obtuse appendages, one pair of caudal, 

 and one pair of spathulate processes from the head directed 

 forwards. Anterior autennte with four or five articulations. 

 Posterior antennae small, uncinate. Proboscis and maxillipeds 

 present ; also a small single eye. External ovarian tubes not ob- 

 served. Male not known. 



(1) COLOBOMATUS LAMNuE. $ . 



Colobomatus lamnce Hesse, Ann. Sci. Nat. ser. 5, xvii. 1873, 

 p. 3, pi. xxiv. fig. 1. 

 „ C. Vogt, Arch. Zool. Exp. vol. vi. 1877, p. 387. 

 Host : nasal fossa of Lamna cornuhica. 



