. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. THE ANATOMY OF THE CAPE ROCK LOBSTER 163 opical ner"ve adductor muscle apical muscle protocerebrum medulla terminalis medulla interna oculomotor II \ \ medulla externa no ganglionaris. tegumentary nerv^ vesicular nerve I connective ,1] ageal nerve phageal nerve Fig. 61. Dorsal view of cephalic portion of central nervous system and part of stomatogastric nervous system. of thick fibres springing ventro-laterally from the tritocerebrum. Proximally it supplies the antennal remoter, depressor, levat
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. THE ANATOMY OF THE CAPE ROCK LOBSTER 163 opical ner"ve adductor muscle apical muscle protocerebrum medulla terminalis medulla interna oculomotor II \ \ medulla externa no ganglionaris. tegumentary nerv^ vesicular nerve I connective ,1] ageal nerve phageal nerve Fig. 61. Dorsal view of cephalic portion of central nervous system and part of stomatogastric nervous system. of thick fibres springing ventro-laterally from the tritocerebrum. Proximally it supplies the antennal remoter, depressor, levator, and promotor muscles, and then proceeds medially through the peduncle, branching from time to time to the muscles in the three segments. The innervation of the bladder of the antennal gland is effected by a delicate nerve (fig. 61) which arises from the root of the antennary nerve in proximity to the branches to the antennal remotor and depressor muscles. It is analogous to the vesicular nerve of Astacus which, however, was traced by Keim (1915) from the tegumentary nerve. It is admitted that several branches of the latter nerve run close to the wall of the bladder and, although they terminate more laterally in the hypodermis, there may be very fine connexions between some of them and the wall of the bladder. Further proof that the tegumentary nerve is not the source of the supply to the bladder has been provided by Maluf (1941), whose observations indicate that in Procambarus clarkii it is served by two sets of fibres derived from the root of the antennary nerve. Chaudonneret (1956) has also briefly mentioned that in Orconectes limosus [Cambarus affinis) the. 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 South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
