. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. io8 ANNALS OF THE SOUTH AFRICAN MUSEUM The postero-lateral walls are strengthened by a pair of conspicuous, more or less postero-lateral cardiac plates (figs 32-34). The surface of each is provided with several rows of setae which project into the lumen. In front of these areas there is a pair of ill-defined antero-lateral cardiac plates (figs 32, 34); these are more membranous and are not setose. The cardiac ossicle (figs 32-34) is a fairly large, dorso-median, roughly triangular piec
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. io8 ANNALS OF THE SOUTH AFRICAN MUSEUM The postero-lateral walls are strengthened by a pair of conspicuous, more or less postero-lateral cardiac plates (figs 32-34). The surface of each is provided with several rows of setae which project into the lumen. In front of these areas there is a pair of ill-defined antero-lateral cardiac plates (figs 32, 34); these are more membranous and are not setose. The cardiac ossicle (figs 32-34) is a fairly large, dorso-median, roughly triangular piece with an indented posterior margin and a slight, outer, postero- median ridge for the insertion of the anterior gastric muscles. — urocardlac ossicle. *-• cardiac ossicle 3 3 prepectineal ossi "~ lateral tooth accessory lateral tooth postero- latere i cardiac plate zygocardiac ossicle card i O-pyloric valve oesophag prepyloric ossicle pyloric ossicle median tooth dorsal caecum / 1/2 ^dorsal valve. hepatic duct Fig. 33. Median view of fore-gut. hind-gut ateral valve mid-gut 1/ 2 ventral va I ve The pterocardiac ossicles (figs 32, 34) are paired, rather small, slender, lateral sclerites articulating with the postero-lateral border of the cardiac ossicle and extending inward towards its postero-lateral notch. The greater part of the roof of the cardiac fore-gut is formed by the flat urocardiac ossicle (figs 32-34). It is broadest anteriorly at its articulation with the cardiac and the pterocardiac ossicles and narrows pei'ceptibly at its posterior extremity, where it is continued into a downwardly-directed, forwardly- prepectineal ossicle pterocandioc ossicle. 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
