Eastern Pacific Tunicates — Berner 
253 
the oral retractor crosses it. Dorsally the in- 
termediate muscles unite with the first body 
muscle; midventrally they join and continue 
into the peduncle as the anterior peduncle 
muscles. 
Internal structure: The internal structure ap- 
pears to be identical with that of the aggre- 
gate C. pinnata. The gut lies below the endo- 
style, which extends forward to the area of the 
third ventral oral sphincter. The dorsal tuber- 
cle is of typical horseshoe-shape and the 
ganglion with the eye is typical of the species. 
Light organs: (Fig. 6a, b ) It is on the varia- 
tion found in the light organs that this sub- 
species is based. The usual pair of light organs 
is present between muscles II and III but 
there is an additional pair situated between 
muscles III and IV. The second pair of light 
organs is smaller than the first, usually about 
one third as large. 
No characters have been found in indivi- 
duals of the solitary generation examined 
which might indicate that they belong to this 
subspecies. The specimens examined have 
been typical of the solitary form of C. pinnata 
polae. 
Except for the records of Ihle and Komai 
from the Molucca Sea and off Seto, Japan, 
respectively, the known distribution of C. 
pinnata quadriluminis at the present time is 
confined to the area off the California coast 
south of Point Conception and north of Se- 
bastian 'Viscaino Bay off Baja California (Fig. 
8). In the area off western North America 
under consideration the subspecies is six times 
as common as subspecies polae. No informa- 
tion is available on the vertical distribution 
of the subspecies. 
SUMMARY 
Two members of the genus Cyclosalpa have 
been described from the eastern Pacific Ocean. 
C. strongylenteron , new species, has been taken 
in 12 localities ranging from off the coast of 
Peru to off the coast of Baja California. C. 
pinnata quadriluminis new subspecies, previ- 
ously noted by Ihle and Komai is here named 
and reported in large numbers for the first 
time. The range of this subspecies, except for 
the two specimens previously reported, is off 
southern California and northern Baja Cali- 
fornia. 
REFERENCES 
Brooks, W. K. 1893. The Genus Salpa, with 
a supplementary paper by M. M. Metcalf. 
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Ihle, J. E. W. 1910. Die Thaliaceen (ein- 
schliesslich Pyrosomen) der Siboga Expedi- 
tion. Siboga Expeditie , Monogr. *b6d: 1-55, 
6 figs., 1 pi. 
— 1935. Desmomyaria. (In) Handbuch 
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Gruyter and Co., Berlin and Leipzig. 
Komai, Taku. 1932. On some salps occur- 
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Metcalf, M. M. 1918. Contributions to the 
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1919. Corrections to Metcalf 1918. 
Science 50(1279): 19-20. 
1927. Seymour Sewell on "Salps of 
Indian Seas.” Science 65(1680): 257. 
Nair, R. V. 1949. The Thaliacea of the 
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