114 first Annual Report 
claws (which are not of equal length). The second legs with a eylin- 
drical third joint armed with a short claw, and a small, weak, 
searcely longer, recurved seta, which is not shown in the drawing. 
First legs with the long curved claw nearly as long as the three pre- 
ceding joits. Branchial plate of mandibular palp with four stout 
sete, the branchial plate of first maxille with about twenty-three. 
Other characters may be gathered from the figures. Nearest in 
general appearance, perhaps, to Cypris pellucida. 
Xestoleberis transversalis n. sp. 
(Figure 62 
A small (.5 to .65 mm.), very pale greenish or brownish, white 
banded podocopous ostracod is very abundant in tide-pools at 
Laguna Beach. The characters of anal armature, mandibular palp, 
second antenna, and shell strueture seem to distinguish it from any- 
thing previously described. The shell is very slightly hairy except 
along distal margin. The dise of the shell is armed with numbers of 
distinct tubercles, and with a transverse white band at or slightly 
posterior to middle. First antenne six-jointed, the penultimate and 
antepenultimate joints of equal length, longer than third but shorter 
than the much slenderer last joint; last jomt with two spines, penul- 
timate with a tuft of spines at apical angle. Second antenne with 
fourth joint not distinctly separated, the outer branch with terminal 
claw as long as claw of inner branch. The tuft of spines on outer 
margin of third joint of inner branch nearer base than apex. Man- 
dibles at masticatory margin narrower than at insertion of palpus; 
palpus with respiratory plate distinctly separated to the base and 
with two shightly plumose spines, the terminal portion of palpus dis- 
tinctly two-jointed; two large spines at base of palpus. Second leg 
with basal joint longer than second, the fourth nearly twice the 
leneth of third. 
Both this species and the next are placed in Xestoleberis, though 
a new genus might easily be erected for each of them as Esterly 
has done for Paracytheroma pedrensis. These appear, however, to 
present only specifie differences. 
Xestoleberis flavescens n. sp. 
(Figure 63) 
Another podocopous ostracod oecurs with X. transversalis, but 
isa slightly larger, and rarer, species. In shell structure, anal arma- 
ture, and other details it is entirely distinct. The shell is entirely 
covered with small rounded bosses of peeuliar structure, and it is 
cream colored and translucent throughout. The legs are distinctly 
yellowish. First antenne four-jointed, penultimate joint far shorter 
