168 University of California Publications. [ ZOOLOGY 
a short distal spine on the outer border, and a longer proximal] 
spine in the middle of the outer border (fig. 290). 
& Unknown. 
ri ——\W 
Fig. 29.—Scolecithriz subdentata, n. sp. (a) Female, lateral, X31. (6) 
Fifth foot, female, X195. (c) Maxilla 140. B.2, second 
basal. i., inner ramus. fe., outer ramus. 
Approaches S. dentata Giesbrecht in form of last thoracie 
segment, but the indentation is not as deep as in that species. 
The fifth foot is much as in dentata, but more oval and rounded. 
Distinct from dentata in possessing an outer marginal bristle 
on the first joint of outer ramus of first foot, and in the number 
of joints of the anterior antennae. The bristles of the maxilla 
distinguish S. subdentata most sharply. S. subdentata has the 
same number of joints in the antenna as S. longicornis Scott and 
S. auropecten Giesbrecht. 
Length: Female, 1.48 mm. 
Occurrence: San Diego, May 31, June 14, June 23, 1904. 
5. Seolecithrix pacifica n. sp. 
2 Fourth and fifth thoracic segments fused, rounded later- 
ally. First segment of abdomen about as long as second and 
third together; the latter two are equal in length. Outer ramus 
of posterior antenna a little longer than the inner ramus. Sec- 
ond basal of maxilla with five bristles, inner ramus with eight, 
a 
