OCR Text |
Show 1899.] PARASITIC COPEPODA O N FISHES. 477 G. 15. LAMPROGLENIA Nordm. Head distinct, quadrilateral. Thorax elongated, composed of four rings indistinctly articulated. Genital segment short. Abdomen very long ; caudal plates small, lobe-like. Anterior antennae with 10 joints. Posterior antennas not uncinate, but provided with setae. First maxillipeds very strongly uncinate, second terminating in 3 claws. • Thoracic limbs rudimentary, the first four biramose, fifth minute, stump-like. (1) LAMPROGLENIA PULCHELLA. 2 • Lamproglenia pulchella Nordm. Mikrogr. Beitrage, 1832, Heft 2, p. 1, pl. i. tig. 1. „ „ M.-E. Hist. Nat. Crust, iii. 1840, p. 487, pl. xxxix. fig. 6. „ „ Claus, Beitrage, 1875, p. 26, pl. xxiv. fig. 33. Host: gills of Cyprinus jeses [Leuciscus sp.]. (2) LAMPROGLENIA LICHI^E. 2 • Lamproglenia lichice Nordm. Mikrogr. Beitrage, 1832, Heft 2, p. 134. Host: gills of Lichia aculeata. (3) LAMPROGLENIA HEMPRICHI. 2 • Lamproglenia hemprichiiNordm. Mikrogr.Beitrage, 1832, Heft 2, p. 134. Host: Myletes dentex. Family IV. PHILICHTHYID.E. (Lerneoapodiens Hesse.) Females elongated, more or less segmented, without articulated locomotive organs, but often with soft lobe-like lateral appendages. Antennas and mouth-processes more or less rudimentary. Males distinctly articulate, with two pairs of antennae, two pairs of maxillipeds, the first pair of the latter being transformed into powerful hooks, and two pairs of biramose thoracic limbs, sometimes also one pair on the first abdominal segment. Small cutaneous dorsal appendages to the second thoracic segment. Abdomen generally with 8 articulations. These parasites are all found free iu the mucous canals and sinuses of various fishes. G. 1. PHILICHTHYS Stp. Female. The whole body distinctly multisegmented, and elongated ; without dorsal plates or articulate limbs ; carrying on the small rounded head as well as on the sides of the body a number of soft non-articulate appendages of very peculiar shapes and sizes. |