54 University of California Publications. [ ZOOLOGY 
Salpidae in which the intestine is massed into a compact 
spherical body known as a nucleus. Blastozooids detached from 
the proliferating stolon of the parent either one by one or in 
eroups consisting of two parallel series. 
Cyclosalpa bakeri n. sp. 
(a) Solitary (budding) generation.—Pl. II, all figures. Body 
somewhat cask-shaped, the posterior end a little narrower than 
the anterior; a distinct, though not deep, constriction setting 
off the anterior end. Long axis nearly straight as seen in pre- 
served specimens,’ Pl. IT, fig. 1; section of body everywhere cir- 
cular. Length of largest zooid seen, 41 mm., this with 
salpa chain well developed. Test exceedingly soft and trans- 
parent and wholly devoid of colored pigment. Five white ‘‘longi- 
tudinal organs’’ on each side, the first pair between second and 
third muscle bands. Upper hp of branchial orifice truncate, 
lower lip rounded and protruding more than upper. Atrial ori- 
fice without lips. Muscle bands very delicate and difficult to 
trace. Body bands ten, though at neither end decisively separ- 
able from orifice muscles. All bands except ninth and tenth, 
and sometimes eighth, interrupted dorsally, and all except first, 
ninth and tenth interrupted ventrally. First trending backward 
on dorsal side, the ends becoming nearly parallel and reaching 
as far back as the third; also connected on dorsal side with the 
posterior lip band by two parallel longitudinal muscles. Second 
also trending backward on dorsal side to terminate almost coin- 
cidentally with first and third. Seventh bending abruptly for- 
ward on dorsal side and running parallel close together as far 
as the fifth, sometimes broken into fragments, Pl. II, fig. 2. 
Eighth also turning forward on dorsum, but less abruptly than 
seventh, sometimes interrupted in median line, sometimes not. 
Second band trending backward on ventral side; likewise third, 
though less than second. Fifth inclined somewhat forward ven- 
1 Though attention should be called here to fig. 4, Pl. II, which outlines 
the form of a specimen alive and swimming. From this observation, and 
from the fact that C. affinis certainly has normally a more sinuate general 
form in life than after preservation, I am inclined to believe that when 
sufficient numbers of living individuals of this species have been examined 
to determine the point, it will be found that fig. 4 represents the normal 
form more nearly than does fig. 1. 
