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Show 496 MR. P. W. BASSETT-SMITH ON [Apr. 18, (1) TANYPLEURUS ALCICORNIS. 2 • Tanypleurus alcicornis Stp. & Liitk. Bidrag til Kundskab, 1861, p. 425, pl. xv. fig. 30. Hosts : Cyclopterus spinosus, Scymnus microcephalus [Laemargus borealis]. Greenland. Family VII. LEBN^OPODIDcE. Adult fern ale with the body robust, incompletely or not at all segmented. Tbe anterior antennae are small, springing from the inside of the posterior ones, which are generally two-branched. Mouth conical, with a ciliated margin in which is seen the dentate slender mandible. Maxillae curved, toothed, and free. First maxillipeds large, as strong hook-like limbs. Second maxillipeds converted into organs of attachment, sometimes long and slender, others united throughout, or short and dilated, terminating in a fixing apparatus. Thoracic limbs often totally suppressed. External ovaries as dilated sacs. Generally a fixed parasite. Male pigmy, found on some portion of the female (head, arms, or body). It is strikingly different and proportionately very small. Articulate limbs more or less represented, but varying considerably in different genera, and useful as a means of classification. G. 1. THYSANOTE Kroyer. Cephalothorax not markedly attenuated, joining imperceptibly with the body, which is dilated and flattened; the second maxillipeds, like the hinder part of the body, giving rise to fimbriform appendages. Abdomen minute. Anterior antennae slender, articulate; posterior unciform. Second maxillipeds united at the end. Male with distinct cephalothorax, and elongated segmented abdomen. (1) THYSANOTE POMACANTHI. 2 • Thysanote pomacanthi Kr. Bidrag til Kundskab, 1863, p. 288, pl. xv. fig. 1. Host : gills of Pomacanthus pant. West Indies. (2) THYSANOTE EIMBRIATA. 2 • Brachiella fimbriata Heller, Eeise d. Novara, 1S65, p. 240, pl. xxiv. fig. 2. Host: gills of Serranus sexfasciatus. Batavia. (3) THYSANOTE LOBIVENTRIS. 2 • Brachiella lobiventris Heller, Beise d. Novara, 1865, p. 241, pl. xxxiv. fig. 3. Host : gills of Rhypticus saponaceus. Brazil. |