44° 



DISCOVERY REPORTS 



resemble the large long-headed ones of var. compacta. Only a tentative identificat on 

 is, however, possible. 



Species 2 (Fig. 40). These specimens are evidently young colonies of the spineless 

 species, C. atlanticus, with which they were found (see p. 460). 



Species 3 (Fig. 41 B, C). These specimens closely resemble C. midtispinosas (Kluge, 

 1914, p. 628, pi. xxx, fig. 2). 







q 



m.r 



I ! 1 , 1 ■ 1 ■ 1 ■ 1 m.i 



AD -brum 



1 ! I ■ ' ■ ' I I 



BC -4mm 



Fig. 42. A-C. Camptoplites. Ancestrula, species 5. St. 181, Palmer Archipelago. A. Ancestrula and first 

 zooecia. B, C. Avicularia. D. Camptoplites. Ancestrula, species 6. St. 181, Palmer Archipelago. The 

 small avicularium on zooecium 4 is foreshortened. The left-hand branch, drawn as if it ended, was 

 continued, see Table 2, p. 438. 



a. ancestrula, ax.c. axillary chamber, ax.r. axillary rootlet, b. bud, starting secondary branch, b.bd. basal 

 band, m.r. marginal rootlet, ru. runner, 1-4, first four zooecia. 



In spite of Kluge's opinion that colonies of this type represent a distinct species, I have 

 no doubt that they are young colonies of some other form. They are all small colonies 

 with few zooecia and the ancestrula intact, and the small size of the zooecia and more 

 numerous spines are both characteristic features of the early stages of a colony. The 

 colonies are not far enough advanced for recognition of the species. 



The separation of the distal spines into two groups may be faintly indicated at the 

 second or third zooecium, or not till after the second bifurcation, as in Kluge's figure, 



