. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. 435 1. Sub-order: Eucopepoda. Copepoda with swimming feet, the rami of which are two or thi'ee jointed. They have biting or piercing and sucking mouth parts. 1. Gnathostomata. For the most part non-parasitic; oral apparatus adapted for mastication ; fully segmented body. Fam, Cyclopidae. Mostly frcsli-water animals, without a heart, and with a simple eye. The second pair of antennae are four-jointed and never biramous. The feet of the fifth pair are rudi- mentary in both sexes. The male emploj-s the
. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. 435 1. Sub-order: Eucopepoda. Copepoda with swimming feet, the rami of which are two or thi'ee jointed. They have biting or piercing and sucking mouth parts. 1. Gnathostomata. For the most part non-parasitic; oral apparatus adapted for mastication ; fully segmented body. Fam, Cyclopidae. Mostly frcsli-water animals, without a heart, and with a simple eye. The second pair of antennae are four-jointed and never biramous. The feet of the fifth pair are rudi- mentary in both sexes. The male emploj-s the anterior antennjc for prehension. Cycloj^s coronattis CIs., Ca);fiis minutus Cls., Harpact'icus chalifcr 0. Fr. Miill., North Sea. Fam. Calanidae, The anterior antenna; are very long, only one of them is modified for prehension. The posterior antennae are bira- mous. Pleart always present. The feet of the fifth pair are, in the male, modified to assist in copula- tion. CctocMlus Goods., jyiajytomus castor Jur. Irenccus Patersonii Tempi. Fam. NotodelphyidsB. Structure of body like that of the Cyclopidcc. The posterior antennae modified for attachment. The two last tho- racic segments are fused in the female and form a brood cavity for the reception of the eggs. They live in the branchial cavity of As- cidians. K'otoddpliys agilis Thor. 2. Parasita* (Siphonosto- mata). Mouth parts adapted for piercing and sucking, usually A\dth incomplete seg- mentation of the body and reduced abdomen. The posterior antennse and maxillipeds end with hooks for attachment. Some of. Pia. 346.—LerncBa branchuiUt. a, Male (abotif, 2 to 3 mm. long). Oc, Eye; G, brain; T, testis ; M, stomach ; P' to F''', the four pairs of swimming feet; Sp, spermatophore sac. b. Female (5 to 6 mm. long at the time of copulation). A', A", the two pairs of an- tennfB; D, intestine; R, proboscis; Mt/, maxilliped. c, Female of Zenura hranchialis after copulation undergoing metamorphosi
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectanimals, bookyear1892
