Jfirst annual deport 



claws (which are not of equal length). The second legs with a cylin- 

 drical third joint armed with a short claw, and a small, weak, 

 scarcely 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 joints. Branchial plate of mandibular palp with four stout 

 seta?, the branchial plate of first maxilla? with about twenty-three. 

 Other characters may be gathered from the figures. Nearest in 

 general appearance, perhaps, to Cypris pelluci/l/i. 



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 structure seem to distinguish it from any- 

 thing previously described. The shell is very slightly hairy except 

 along distal margin. The disc of the shell is armed with numbers of 

 distinct tubercles, and with a transverse white band at or slightly 

 posterior to middle. First antennae six-jointed, the penultimate and 

 antepenultimate joints of equal length, longer than third but shorter 

 than the much slenderer last joint ; last joint with two spines, penul- 

 timate with a tuft of spines at apical angle. Second antennae 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 slightly 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 

 length 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 Fsterly 

 has done for Paracytheroma fH'tlrci/xix. These appear, however, to 

 present only specific differences. 



Xestoleberis flavescens n. sp. 



( Figure 63) 



Another pndoropous ostracod occurs with X. transversalis, but 

 is a 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 peculiar structure, and it is 

 cream colored and translucent throughout. The legs are distinctly 

 yellowish. First antennas four-jointed, penultimate joint far shorter 



