. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 468 DISCOVERY REPORTS Description. This species differs from Camptoplites areolatus (Kluge) in the absence of the calcareous projection from the basal wall ("kleine halbmondformige, kalkige querscheide " of Kluge), in the asymmetrical origin of the axillary rootlets, in the longer opesia, in the shape of the larger type of avicularium, and in the ovicells. In C. areolatus zooecia E and F at the bifurcation are in contact for some distance (Fig. 54 A), the actual bifurcation occurring a
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 468 DISCOVERY REPORTS Description. This species differs from Camptoplites areolatus (Kluge) in the absence of the calcareous projection from the basal wall ("kleine halbmondformige, kalkige querscheide " of Kluge), in the asymmetrical origin of the axillary rootlets, in the longer opesia, in the shape of the larger type of avicularium, and in the ovicells. In C. areolatus zooecia E and F at the bifurcation are in contact for some distance (Fig. 54 A), the actual bifurcation occurring at about the level of the proximal end of the opesia of zooecium E (lettering as in Harmer, 1923). When an axillary rootlet is formed it arises from the usual type of symmetrical, more or less triangular, axillary chamber, with a pair of distal runners. In C. asymmetricus zooecia E and F are only joined by a small proximal connecting process, the bifurcation occurring beside the opesia of zooecium B (Fig. 54 C). The axillary chamber takes the form of a tube running from the axil along the side of zooecium E and giving rise to a rootlet at a point nearly half way along the side of the zooecium. A runner is sometimes formed and passes along. Fig. 55. A, B. Camptoplites areolatus (Kluge) St. 175, South Shetland Islands. C, D. C. asymmetricus Challenger St. 320, off Patagonian Shelf. E, F. C. asymmetricus St. 156, South Georgia. G, H. C. reticulars (Busk). Challenger St. 147, off Crozet Islands. Avicularia. the side of zooecium F. The greater separation of zooecia E and F and the condition of the axillary chamber may perhaps be correlated with the more complete differentia- tion of the joints in C. asymmetricus, if this difference in the joints proves to be a constant feature when more material is examined. The large avicularia are a little longer and less curved than those of C. areolatus (cf. Fig. 55 A, C and E), this flattening of the head b
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