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is from Japan. These are dark, rather densely pubescent insects with very abbreviated elytra. They are about 4 mm in length. The genus was reviewed by Moore (1956a).

Baeostethus Broun. A single species, B. chiltoni Broun is known from Campbell Island in the sub Antarctic. It is yellowish brown and about 5 mm long. It resembles Liparocephalus from which it is distinguished by the numerous teeth on the mandibles (Steel, 1964).

Amblopusa Casey. The two species, A. brevipes Casey, found from British Columbia to Alaska, and A. borealis Casey, found from California to Alaska, appear to be rare. They are found in intertidal rock crevices on reefs. They somewhat resemble species of Diaulota but can be distinguished by their small eyes, serrate mandibles, longer elytra and impressed fourth and fifth tergites. They are ferrugineous in color, slender and about 2-3 mm in length. The genus was

revised by Moore (1956a).

Bryobiota Casey is represented by a single species, B. bicolor Casey, from the Pacific coast of North America. It is not common in Southern California on the sea beaches in wrack. Southern specimens are ferrugineous with darker abdomens whereas northern specimens tend to be entirely dark. The head and pronotum are impressed longitudinally. The mesosternum is carinate longitudinally, a rare character in this subfamily. It is about 2.5 mm long.

Heterota Mulsant and Rey. Five species have been described in this genus from Europe, the Red Sea, the Indian Ocean and Singapore. They are found under seaweed, etc., on the beach. H. plumbea Waterhouse, the type of the genus, is from Europe. It is dull black with the appendages paler. It is about 3 mm long.

Cameronium Koch. Four species are known from Zanzibar, the Red Sea, North Africa and Sonora, Mexico. They are small submarine species each from a region of hot climate. The species somewhat resemble species of Phytosus but lack spines on the anterior and middle tibiae. The integuments are densely reticulate and rather dull, usually dark but sometimes with pale markings. The ligula is bifid, a character shared with Thinusa and Atheta. The genus was reviewed by Moore (1964a).

Diaulota Casey. Six species are known in this genus, three from central California to Baja California, one from central California to Alaska and two from Japan. Individuals are found in intertidal rock crevices down to mean low water. The species restricted to near high water are dark and densely reticulate whereas those of near low water are pale and more shining. The elytra are short with the metasternum much reduced in length as is characteristic of many wingless staphylinids. The tarsal and palpal segments are sometimes reduced in number in California specimens. In the Japanese species the tarsal segmentation is apparently always reduced. The genus was revised by Moore (1956a).

Bolitochara Mannerheim. B. impacta Blackburn (1885) from Hawaii from 'marine rejectamenta on the beach' was poorly described from a single specimen.