. Animal parasites and messmates. Parasites. PARASITES FREE WHILE YOUNG. 151 from the head to the caudal region by means of their oviferous tubes, which in certain seasons acquire a pale green tint. The true Lerneans, such as the Lernea branchialis, a species that was the earliest known upon the di£ferent Gadidge, and which we have observed on the Callionyme lyra, greatly resemble the Penellas, but their body and their head are much twisted, and with the coils of tubes which contain the eggs, you might take them for a ball of thread. (Fig. 31.) The Sphyriones called Leister a have also a most
. Animal parasites and messmates. Parasites. PARASITES FREE WHILE YOUNG. 151 from the head to the caudal region by means of their oviferous tubes, which in certain seasons acquire a pale green tint. The true Lerneans, such as the Lernea branchialis, a species that was the earliest known upon the di£ferent Gadidge, and which we have observed on the Callionyme lyra, greatly resemble the Penellas, but their body and their head are much twisted, and with the coils of tubes which contain the eggs, you might take them for a ball of thread. (Fig. 31.) The Sphyriones called Leister a have also a most singular form, and a new species has been recently observed on a fish from the Straits of Magellan. The Conchodermagracile lives on the branchiae Fig 31.—Lernea bran- CIllRllS, < to of the Ma'ia squinado, the sea-spider of the giiis of Morrhua the Adi'iatic, and Mons. W. Salensky of Charkow, found a copepod crustacean, the Spliseronella Leuckarti, in the egg-pouch of an Amphito'e. The latter parasite has very peculiar characters of conformation and embryonic evolution. Among the molluscs, the Tunicates give lodging to the greater number of lerneans ; in the cavity which is before the mouth, and by which the food passes, some are found which can scarcely be recognized, and which remain there to smell out a feast. The Aplidium of the coasts of Belgium gives lodging to some which are very curious, and which we have named Enterocola fulgens, on account of their colours. The Notopteropho7'us estab- lishes itself on the body of the Phalliisia mamillaris, and a certain number of these parasites are found on the annelids. Professor Bars of Christiania, and Claparede. 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 Beneden, M. van (Pierre Joseph), 1809-1894. New York, D. Appleton and Company
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectparasit, bookyear1876
