1899.] PARASITIC COfEPODA OIT FISHES. 479 



(6) ElCHIAEDIA SCI^N^. 5 c? • 



Philichthys scicena Eichiardi, op. cit. 1875. 



„ 0. Vogt, Arch. Zool. Exp. vol. vi. 1877, p. 412. 

 Host : lateral line of Scicena umbra. Mediterranean. 



(7) EicHiAKDiA DENiicis. 5 . (Plate XXVI. fig. 3.) 

 Philichthys denticis Eichiardi, op. cit. 1876, pi. vi. fig. 2. 

 Host : frontal sinus of Dentex vulgaris. Mediterranean. 



(8) ElCHIAEDIA BAEALDI. 



Philichthys haraldii Eichiardi, op. cit. vol. iii. 1876, pi. vi. fio-. 5. 

 Host : frontal sinus of Chrysophrys aurata. Mediterranean. 



Gr. 3. SPHiEEiFEK Eichiardi. {Sphterosoma 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 which 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) SPHiEEIEEK COEVIN^. 



Sjohcerosoma corvince Leydig, Arch. f. JSTatur. v. Trosch xvii 



1851, p. 259. 

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

 i" » » C. Vogt, Arch. Zool. Exp. vol. vi. 1877, p. 413. 



Host : mucous canals of Corvina nigra and Scicena aquila. 



(2) Sph^eifee letdigi. (Plate XXVI. fig. 4.) 

 Sphoirifer leydigi Eichiardi, op. cit. 1876, pi. vi. fig. 6. 

 Host: mucous sinus of Vmbrina cirrhosa. Mediterranean. 



Gr. 4. CoLOBOMATFS Hesse. 

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

 three narrow free thoracic joints followed by an enlarged oval 

 genital portion, a,nd 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 antenn* 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 LAMN^. $ . 



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

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

 i> » 0. Vogt, Arch. Zool. Exp. vol. vi. 1877, p. 387. 



Host ; nasal fossa of Lamna cornubica. 



