Text-book of comparative anatomy . Fin. 284.—Limulus polyphemus, young specimen from the ventral side (after Packard). The leaf-like feet serve for swimming as well as for breathing.A sternal encloskeleton is present. XIPHVXURA 419 Nervous System.--The central nervous system consists of aganglionic mass lying in the cephalothorax and surrounding the oeso- ^ It <L4 m. inn an.. mu. PIG. - ^j.—Median longitudinal section through a young Limulus polyphemus (afterPackard), ctlt, Cephalothorax; tib, abdomen; ss, caudal spine; rm, anterior stomach; m,stomach; Ti, heart; ss, sternal cartilaginous
Image details
Contributor:
The Reading Room / Alamy Stock PhotoImage ID:
2AWDRYEFile size:
7.1 MB (287.1 KB Compressed download)Releases:
Model - no | Property - noDo I need a release?Dimensions:
2325 x 1074 px | 39.4 x 18.2 cm | 15.5 x 7.2 inches | 150dpiMore information:
This image is a public domain image, which means either that copyright has expired in the image or the copyright holder has waived their copyright. Alamy charges you a fee for access to the high resolution copy of the image.
This image could have imperfections as it’s either historical or reportage.
Text-book of comparative anatomy . Fin. 284.—Limulus polyphemus, young specimen from the ventral side (after Packard). The leaf-like feet serve for swimming as well as for breathing.A sternal encloskeleton is present. XIPHVXURA 419 Nervous System.--The central nervous system consists of aganglionic mass lying in the cephalothorax and surrounding the oeso- ^ It <L4 m. inn an.. mu. PIG. -_^j.—Median longitudinal section through a young Limulus polyphemus (afterPackard), ctlt, Cephalothorax; tib, abdomen; ss, caudal spine; rm, anterior stomach; m, stomach; Ti, heart; ss, sternal cartilaginous endo-skeleton; d, intestine; ;/, brain; ug, infraal ganglionic mass; bin, ventral chord; o, operculuin; rti-ag, gill carrying abdominals; mu, mouth; an, anus. phagus ; it is continued into the abdomen as a ganglionic ventral chord.The circular ganglionic mass of the cephalothorax is found to consistof the brain, which lies in front of the oesophagus, and gives off nervesto the lateral eyes and the ocelli, and of 7 postoral pairs of ganglia Aviththeir transverse commissures, these ganglia lying near each other.The latter yield the nerAres for the cephalothoracic limbs. The ventralchord of the abdomen consists of 6 ganglia, the last of Avhich is thelargest. The nerves to the leaf-like feet are given oft* by theselatter. The compound eye of Lit twins (Fig. 286) deserves sp