. Outlines of zoology. Zoology. Fig, 113.—Dorsal view of nervous system of Chiton. (After Pel- SENEER.) c., Cerebral commissure; g., gut (above all the com- missures except cerebral and supra-rectal); pa.^ pallial or visceral loop with supra- rectal commissure { c.')\ /., pedal nerves united by numerous transverse branches ; ;.^ stomato- gastric commissure ; s,r., subradiilar commissure; /., labial commissure; v., vis- ceral Fig. 114.—Proneomenia. Ner- vous system {From HuB- RECHT. ) ^ Cerebral ganglia; , sub- lingual ; anterior pedal; p-p-g-, posterio
. Outlines of zoology. Zoology. Fig, 113.—Dorsal view of nervous system of Chiton. (After Pel- SENEER.) c., Cerebral commissure; g., gut (above all the com- missures except cerebral and supra-rectal); pa.^ pallial or visceral loop with supra- rectal commissure { c.')\ /., pedal nerves united by numerous transverse branches ; ;.^ stomato- gastric commissure ; s,r., subradiilar commissure; /., labial commissure; v., vis- ceral Fig. 114.—Proneomenia. Ner- vous system {From HuB- RECHT. ) ^ Cerebral ganglia; , sub- lingual ; anterior pedal; p-p-g-, posterior pedal; \g., posterior vis- cerals ; si., sublingual connectives; cfic.^ cerebro-pedal connective; pe., longitudinal pedal ner\'es ; /a., longi- tudinal lateral nerves. differentiated ; but ihe i^diial sense organs are usually numerous and varied. A twisted gut I'uns through the bod)-, surrounded by a diffuse digestive gland. There is a radula in the mouth. The heart is median and posterior, and consists of a ventricle and 2-S auricles. Numerous gills lie in a regular row along a groove on each side between the mantle and the foot. There are two symuietrical nephridia opening 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 Thomson, J. Arthur (John Arthur), 1861-1933; Newbigin, Marion I. (Marion Isabel), 1869-1934; Smith, Preserved, 1880-1941. fmo. New York, D. Appleton & Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
