. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. POGONOPHORA FROM SOUTH AFRICA 51 general appearance to H. talboti, but, in addition to differences in size and the number of tentacles, they differ in the size of the adhesive plates which are 15 to 20 /x long in H. gracilis and 30 to 40 fx long in H. talboti. Examination of more specimens of//, talboti might disclose more differences, since all four of Ivanov's species have, on part of the preannular metasoma, an area or row of large papillae set close together, whose arrangement and number varies w
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. POGONOPHORA FROM SOUTH AFRICA 51 general appearance to H. talboti, but, in addition to differences in size and the number of tentacles, they differ in the size of the adhesive plates which are 15 to 20 /x long in H. gracilis and 30 to 40 fx long in H. talboti. Examination of more specimens of//, talboti might disclose more differences, since all four of Ivanov's species have, on part of the preannular metasoma, an area or row of large papillae set close together, whose arrangement and number varies with the species. In H. talboti some large papillae are visible in the correct region but their arrangement cannot be seen clearly. Another useful specific character in this genus is the arrangement of the papillae on the postannular region, which has been lost by the present specimen. 2 2 ::tm. B Fig. 3 A & B, two ends of tube type (a). C, tube type (b). Empty Tubes of Unknown Genera and Species Material: Three tubes; position: 340 05' S., 160 58' E.; depth: 2,690 m.; date of collection: ; No. A 319. The tubes are of two types: (a) almost colourless, transparent, with one end slightly wrinkled but not ringed and the other end marked with wide greyish rings (fig. 3, A, B). There are two specimens of this type, one 10 cm. long by 0-195 mm. diameter, the other 2-5 cm. by 0-145 mm. (b) reddish brown in colour, with well-marked brown rings, separated by narrow yellow rings (fig. 3, C). The diameter is 0-12 mm. and the length is 2 cm. The holotype and other specimens of Heptabrachia talboti, and the unidenti- fied pogonophore tubes, are all in the collection of the South African Museum, Cape 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
