. Zoology : for students and general readers . Zoology. 298 â Fig. 237.âIntestine and testis (t) of a copepod {PUnroma), side view, oe, oesophagus ; y, stomach ; A, blind sac leading from the stomach ; i, intes- tine; c, heart; ^)rf, coiled vas deferens.âAfter Glaus, from Gegenbaur. In Lerneonema radiata Steenstrup and Liltken (Fig. 239), we find the lowest term in the series of degradational forms of this order. The mouth-parts are here converted into five roots, radiating from the head ; the body is not segmented, and ends in two long egg- masses. In Penella (Fig. 241) the body is
. Zoology : for students and general readers . Zoology. 298 â Fig. 237.âIntestine and testis (t) of a copepod {PUnroma), side view, oe, oesophagus ; y, stomach ; A, blind sac leading from the stomach ; i, intes- tine; c, heart; ^)rf, coiled vas deferens.âAfter Glaus, from Gegenbaur. In Lerneonema radiata Steenstrup and Liltken (Fig. 239), we find the lowest term in the series of degradational forms of this order. The mouth-parts are here converted into five roots, radiating from the head ; the body is not segmented, and ends in two long egg- masses. In Penella (Fig. 241) the body is cord- like, buried in the flesh of the sun-fish or sword-fish, etc., the females having a long, string-like ap- pendage. The speci- men figured was taken from a sword-fish ofE Portland, Maine. In Lemma hranchia- lis Linn, of the gills of the cod, the body is thicker, the root-like appendages grow deep into the flesh of its host, like twisted and gnarled roots, while the shapeless sac-like body is filled with eggs. In Actheref!, we as- cend a step higher in the perfection of or- gans ; the creature is attached by a pair of !,⢠u -4- 4. ^'g-^S.âCanfhocamritu^ caver- Fie, 239.â ]aWS WniCn unite to narnm of Mammoth Cave, much Fish-Ionse of form a sucker, the an- ''"'"^'''- tw1c^ln".a"4rd: tennse are present, though rudimentary, while AfterVemii. the abdomen is faintly segmented. A. Carpenteri Packard (Fig. 240) lives on the trout in Colorado,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Packard, A. S. (Alpheus Spring), 1839-1905. New York : Henry Holt
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1879
