CAMPTOPLITES 



457 



gonal as in the typical form, irregular (suggesting a jig-saw puzzle), or very narrow and 

 elongated so that the whole pattern is reminiscent of a finger-print. 



The small avicularia are a little longer in proportion to their height than those of the 

 typical form (cf. Figs. 47 D, F and 48 E), and may be a little thickened and projecting 

 where they are attached to the stalk. In these ways they approach those of Camptoplites 



I ■ I ■ I ■ I ■ I .1 



D -5mm 



I ■ I ■ I ■ I . I . I 



A-C.E.F -5mm 



Fig. 49. A. Camptoplites latus (Kluge). St. TN 316, McMurdo Sound. Ovicell. B-D. C. latus var. striata 

 var.n. St. 190, Palmer Archipelago. B. Incompletely calcified ovicell. C. Ovicell from 3rd fertile zone 

 showing more advanced calcification. D. Triserial branch showing large avicularia on both inner and 

 outer zooecia. E. C. latus var. aspera var.n. St. WS 42, South Georgia. Large avicularium. F. C. latus 

 var. striata var.n. St. 190, Palmer Archipelago. Large avicularium. 



i.o. incipient ovicell, Lav. large avicularium (short stalked), s.av. small avicularium. 



latus (Fig. 48 F), but the lower head-angle is always less acute. The length of the down- 

 turned beak is variable. The large avicularia are uncommon. The ovicells much resemble 

 some of those of C. latus var. aspera (Fig. 50 B), but have not been seen to proceed to 

 the thickened roughened stage in which the reticulation is obliterated. In other respects 

 this form resembles C. retifortnis rather than C. latus. 



