Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . s r int r a v Fig. 21. Ochetostoma sp. Dorsal dissection of the trunk, showing thealimentary system and anal vesicles. Ochetostoma sp., however, is small, with a trunk length of only 40 mm and theproboscis is about one-quarter as long. In addition, this specimen has a proboscis in which the lateral margins uniteposteriorly to form a narrow lower lip. Another distinguishing feature of the present specimen lies in the structure ofthe gonostomes. The gonostomal lips, unlike those of O. caudex and O. erythro-grammon, are
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . s r int r a v Fig. 21. Ochetostoma sp. Dorsal dissection of the trunk, showing thealimentary system and anal vesicles. Ochetostoma sp., however, is small, with a trunk length of only 40 mm and theproboscis is about one-quarter as long. In addition, this specimen has a proboscis in which the lateral margins uniteposteriorly to form a narrow lower lip. Another distinguishing feature of the present specimen lies in the structure ofthe gonostomes. The gonostomal lips, unlike those of O. caudex and O. erythro-grammon, are comparatively small and are not spirally coiled. Furthermore, in ECHIURA FROM SOUTHERN AFRICA 71. po s gon 4 mm B
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
