JOURNAL OF ENTOMOLOGY AND ZOOLOGY 165 
Pentidotea aculeatus n. sp. 
Superfamily ASELLOTA 
B. Family JANIRIDA 
a. Genus Janira 
Janira occidentalis Walker 
Superfamily ONISCOIDEA 
A. Family TYLIDAt 
a. Genus T'ylos 
Tylos punctatus Holmes and Gay 
B. Family ONISCIDA 
a. Genus Alloniscus 
Alloniscus cornutus var. lagunae n. var. 
Alloniscus perconvexus (Dana) 
b. Genus Philoscia 
Philoscia richardsonae Holmes and Gay 
Cirolana harfordi (Lockington) 
(Figs. 1, 2, and 3) 
Locality—Very abundant under rocks between tides, at 
Laguna Beach, California. 
Color—Great variation, some white with gray markings, 
some shaded with yellow or orange; females bearing eggs often 
show a bright red coloration; in alcohol the specimens always 
appear to be a sordid white marked with gray. 
Body ovate, arched transversely and longitudinally. Speci- 
men described measures 7 mm. by 3 mm. Head wider than 
long, 2 mm. by 1 mm.; rounded on anterior margin. Eyes 
small, composite, situated laterally and touch anterior margin 
of first thoracic segment. First pair of antenne have a peduncle 
of three articles of which the first and second are small and 
subequal; third almost as long as first and second and nar- 
rower; flagellum of ten articles. Second pair of antenne have 
a peduncle of five articles: first three small and subequal; 
