110 PROCEEDINGS OF THEl NATIONAL MUSEUM voL.loi 



First maxilla. — Outer lobe with about twelve sawlike teeth. 



Second maxilla. — Coalesced with lower lip, distally setiferous. 



Mandible. — Apex acute and setiferous. Palp with three joints, the 

 second the longest and bearing about eight pectinate scales on inner 

 border and a single seta at distal end on inner border; last joint with 

 a row of 14 setae on inner border. 



Peraeopods. — See figure 11, c, /, ^, i. Propodus of gnathopod with 

 about 11 toothed setae on inferior margin near proximal end. 



Uropods. — Endopodite exceeding telson length. Exopodite with 

 posterolateral border slightly sinuate. 



Second male pleopod. — Stylus with a setiferous cylindroid lobe near 

 tip ; apex with four fine setae. 



Types. — Holotype, allotype, and 2 female and 2 juvenile paratypes 

 collected at the type locality, Tomales Bluff (reef), Tomales Point, 

 Marin County, Calif., June 9, 1948, by E.. J. Menzies; washed with 

 formalin from holdfast of the alga Laminaria. Type material has 

 been deposited as follows : 



United States National Museum, holotype female. No. 87692 ; allo- 

 type, No. 87693; 4 female and 4 juvenile paratypes, Nos. 87694-87696. 

 Allan Hancock Foundation, 1 male, 2 female, and 2 juvenile paratypes. 

 Pacific Marine Station, 2 male, 3 female, and 3 juvenile paratypes, 

 accession Nos. 1244-1248 Arth. 



Geographical distribution. — California, from Marin County to San 

 Diego County. 



Material examined. — Specimens were examined that had been col- 

 lected from the following California localities : 



Marin County: Tomales Point., Tomales Bluff, reef, June 9, 1948 

 (R. J. M.) , holotype, allotype, and four paratypes ; ocean side, Novem- 

 ber 28, 1947 (Pv. J. M.), 1 juvenile; May 23, 1948 (K. J. M.), 1 female; 

 bay side, November 28, 1947 (R. J. M.), 1 male, 1 female; May 23, 

 1948 (E. J. M.) , 3 males, 3 ovigerous females, 6 juveniles. San Mateo 

 County: Moss Beach^ December 26, 1947 (Margaret Barr), 1 female. 

 Monterey County: Hopkins Marine Station., July 23, 1947 (Robert 

 W. Storer), 1 female. San Diego County: La Jolla, Childrens Cove., 

 June 9, 1947 (R. J. M.), 1 female. 



Ecology. — Specimens were collected most frequently from the low- 

 est exposed areas of the exposed rocky coast localities. They were 

 found on the algal holdfasts of Macrocystis and Laminaria., among 

 coralline algae, and on the dorsal surface of the abalone Haliotis sp. 

 One specimen was found in a membranous tube attached to branchings 

 of a coralline alga, Bossea sp. 



Remarks. — The description of the species Edanthura linearis Boone 

 (1923, pp. 148-149) is hardly more than generic, and although it is 

 easy to recognize that Edanthura is a synonym of Paranthura it is 

 impossible to distinguish the species from the known species of Par- 



