822 PROCEEDINGS OF THE NATIONAL MUSEUM. voi,.xxi. 



Limnorla uncinata Heller, Vcrh. k. k. Zool. Bot. Gcs. Wieu, XVI, 1866, p. 734. 

 Limnoria liynorum Harger, lieport U. S. Commissioner of Fish and Fisheries, 



1878, Pt. 4, pp. 373, 376. (See Harger for further synouymy.) 

 Limnoria californica Hewston, Proc. Cal. Acad. Sci., V, 1874, p. 24 (nomen 



nudum). 



Eahitat, — Pacific Ocean ; Bering Island. Also found on East coast of 

 North America from Florida to Halifax, on the coast of Great Britain, 

 and in the North Sea. Specimens from San Diego, California, collected 

 by Mr. Henry Hemphill and labeled ^'■Limnoria californica Hewston" 

 are in the National Museum. 



Family III. CIROLANID^. 



ANALYTICAL KEY TO THE GKNERA OK CIR()LANID>5?. ' 



a. Peduncle of second anteun:c iive-jointed. Plate of second .joint of maxillipeds 

 furnished with hooks. First and second pleopotls alike, with at least inner 

 branch snbmerabranaceons. Uropoda with inner angle of peduncle produced. 



3. Cirolana. 



a'. Peduncle of second antennae four-jointed. Plato of second joint of maxillipeds 

 without hooks. Pleopoda with both branches submenibranaceous. Uropoda 

 with inner angle of peduncle very little produced. Superior antenna- with 

 first joint of peduncle quite short, and extended straight in front at a right 

 angle to remaining part of the antenna 4. Eurydice. 



3. CIROLANA Leach. 



ANALYTICAL KEY TO SPECIES OF CIROLANA. 



a. .Head without median process. First pair of antenna- reach apex of peduncle of 

 8c<(md pair of antenna;. Terminal abdominal segmcMit subtriangular, armed 

 on its posterior margin with twenty -six spines. Hoth branches of the uropoda 

 rounded posteriorly and armtMl with spines. 



4. Cirolana harfordi (Lockington). 



a'. Head with long, straight median projection. First pair of antcnnie reach the 

 posterior ludrgin of the third thoracic segment. Terminal abdominal segment 

 rounded and crenulate on its posterior margin and fringed with long hairs. 

 Inner branch of the uropoda obli<iuely truncati- posteriorly. 



.5. Cirolana linguifrona, new species. 



4. CIROLANA HARFORDI (Lockington). 



JEga harfordi Lockington, Proc. Cal. Acad. Sci., VII, 1877, Pt. 1, p. 46. 

 Cirolana californica Hansen, Vidensk. Selsk. Skr., 6th ser., natnr. og math. 

 Afd. V, 1890, pp. 338, 339. 



Habitat. — Victoria, British Columbia; California: Santa Rosa Island, 

 San Diego, Catalina Harbor, Pacific Grove, Monterey Bay; Lower 

 California, specimens lighter in color. 



Miers^ remarks upon having examined s)>ecimens of JEga harfordi, 

 sent by Mr. Lockington to the British Museum and designated Idotea 



' The cliaracteis in this key on the Cirolauidie are taken from Stebbiug, " History 

 of Crustacea," (1893), p. 342. 

 '^Miers, Journ. Linn. Soc. London, XVI, 1883, p. 19. 



