192 
PACIFIC SCIENCE, Vol. XXI, April 1967 
mm), it is here suggested that the total actual 
length of the tube may be several times the 
length of this fragment. 
Segmental funnel-like frills, a common char- 
acteristic of the genus, are only weakly repre- 
sented here (Figs. 3, 7). According to Ivanov 
(1963:412), these frills are soft and pliant in 
G. brachiosum and consist entirely of the exter- 
nal fibrous layer. It is, therefore, easily conceiv- 
able that these frills, originally present on this 
new species, became shrunken and inconspic- 
uous because of the poor conditions of preserva- 
tion of the tubes. The marked concentration of 
irregularly oriented coarse fibers in the vicinity 
of each segmental junction (see Figs. 3, 4) sup- 
ports this contention. 
Pogonophoran tubes are generally straight. 
Most of the tubes of this species in the collec- 
tion studied are also straight (see Fig. 2). A 
few, however, are curved (see holotype, Fig. 
1). This curvature is considered to be a shrink- 
age phenomenon, as a result of drying. 
REFERENCES 
Cutler, E. B. 1965. Pogonophora from the 
eastern tropical Pacific, including two new 
species of SibogUnum. Pacif. Sci. 19(4): 
422-42 6, 13 figs. 
Hartman, O. 1961. New Pogonophora from 
the eastern Pacific Ocean. Pacif. Sci. 15(4): 
542-546. 
and J. L. Barnard, i960. The b-nthic 
fauna of the deep basins off southern Cali- 
fornia. Allan Hancock Pacif. Exped. 22:217- 
284. 
Ivanov, A. V. 1961. New pogonophores from 
the eastern part of the Pacific Ocean. I. Gala- 
thealinum brachiosum sp. n. Zool. Zh. 40: 
1378-1384. 
1962. New pogonophores from the 
eastern part of the Pacific Ocean. II. Hepta- 
brachia ctenophora sp. n., and H. canadensis 
sp. n. Zool. Zh. 41:893-900. 
1963. Pogonophora. (Translated and 
edited by D. B. Carlisle.) Consultants Bureau, 
New York. 479 pp. 
Kirkegaard, J. B. 1956. Pogonophora, Gala- 
thealinum bruuni n. gen., n. sp., a new repre- 
sentative of the class. Galathea Rept. 2, 79- 
83. 
1956a. Pogonophora. First records from 
the eastern Pacific. Ibid. 2:183-186. 
1961. Pogonophora. III. The genus 
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Southward, E. C. 1962. A new species of 
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