. An introduction to the study of zoology : by T. H. Huxley, F. R. S. ; with eighty-two illustrations. Crayfish; Zoology. THE ENDOPHRAGMAL SYSTEM. 159 The endopleurites {) are also vertical plates, but they are relatively shorter, and their inner angles give off two nearly horizontal processes, one of which passes obliquely forwards (fig. 39, B, h, fig. 42, ) and unites with the paraphragm of the endosternite of the somite in front, while the other, passing obliquely backwards (fig. 39, h'), becomes similarly connected with the endo- sternite of the somite behind. epjn. PlO. —As
. An introduction to the study of zoology : by T. H. Huxley, F. R. S. ; with eighty-two illustrations. Crayfish; Zoology. THE ENDOPHRAGMAL SYSTEM. 159 The endopleurites {) are also vertical plates, but they are relatively shorter, and their inner angles give off two nearly horizontal processes, one of which passes obliquely forwards (fig. 39, B, h, fig. 42, ) and unites with the paraphragm of the endosternite of the somite in front, while the other, passing obliquely backwards (fig. 39, h'), becomes similarly connected with the endo- sternite of the somite behind. epjn. PlO. —Astacvs fliiviatilis.—A segment of the endophragmal system (X 3). apJi, arthrophragm; arth, arthrodial or articular cavity ; cxp, coxopodite of the ambulatory leg ; enpl, endopleurite; efis, endosternite ; epni, epimeron ; Jip, horizontal process of endo- pleurite ; mph, mesophragm ; pph, paraphragm ; s, sternum of somite ; so, sternal canal. The endopleurites of the last thoracic somite are rudi- mentary, and its endosternites are small. On the other hand, the mesophragmal processes of the endosternites of the two posterior somites of the head (fig. 39, B, cap), by which the endophragmal system terminates m front, are particularly strong and closely united together. They thus, with their endopleurites, form a solid partition be- tween the stomach, which lies upon them, and the mass of. 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 Huxley, Thomas Henry, 1825-1895; Huxley, Thomas Henry, 1825-1895. Crayfish. New York : D. Appleton
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1901
