Studies in Lagima Aniphiijoda. 637 



between tides, and was collected throughout tlie summer. It was 

 also frequent among- the long, bright green Phyllospadix. On July 

 13th a good quantity of them were biought in by Mr. Hai-l from 

 the tang-les which he had set below tides. On July 8th I collected 

 a still different species of Allorchestes, A. oculata n. sp. from the 

 coralline algae on the rocks at Aliso Point about two and one half 

 niiles south of Laguna Beach. The only freshwater amphipod, 

 Hyalella azieca (Sauss.) taken during the summer belonged to this 

 famil}'. It Avas caught in the nets by Mr. Hall in the freshwater 

 lakes about five miles inland. These tiny little light green and 

 bluish green forms were rather common among the reeds and other 

 thick, hydrophytic Vegetation near shore. 



The family Gammaridae, while not furnishing such a great 

 number of specimens as the Talitridae, also showed considerable 

 variety in habitat. In the tide-pools north of the pier we collected 

 a good many specimens of Caliniphargus sidcus n. sp. from under 

 rocks between tides. Fimhriella robusta n. g. n. sp. was quite 

 common, and Maera simile n. sp. occasional in a large kelp holdfast 

 which floated in to the breaker line from deep water, while Neo- 

 gmnmaropsis antennatus n. g. n. sp. occurred in considerable numbers 

 in tufts of coralline algae between tides. 



Of the families most abundant among the Phyllospadix were the 

 Amphüochidae and the Jassidae. Of the A?nphüocJndae, 1 worked out 

 but one species, the very minute, rose colored AmpJiüocJms littoralis 

 n. sp. Others similar in general appearance, but greatly different 

 in color, some ivory white, others solid black, and still others trans- 

 versely striped, were quite numerous. These have not yet been 

 examined carefully for ditferences in other details but are apparently 

 only extreme color forms of one species. Two genera of the Jassidae 

 were represented, Jassa pidcJwUa, found in many parts of the world, 

 and the white Ischyrocerus parvus n. sp. 



More conspicuous among the corallines but not so numerous as 

 Allorchestes frequens was the large, beautiful green and white Amphithoe 

 corallina Stout. Besides these and Neogammaropsis antennatus, already 

 mentioned, also occurred the Amphithoid, Grubia indentata n. sp., 

 small in size and inconspicuous in coloring. 



Twice during the summer we were able to bring in from the 

 breaker line large kelp holdfasts which had just been washed loose 

 and carried in from deep water still loaded with their usual inhabit- 

 ants. The largest amphipod , though not at all common, found on 



