NO. 1222. 



ISOPODS OF THE A TLANTW COAST-RICIIA IWSOX. 577 



Family XXIII. BOPYRID^. 



AX.\LYTICAL KEY TO THE (iENEKA OF BOPYKID.E. 



a. Body of female with one ..ide greatly .swollen and n.ueh lon-i-r than other ^eg 

 inents of thorax only visible dor.Mally, coxal platen only present on shorter 

 side. A])donien consisting of five segments. Only first leg present on 

 larger side; others wholly obliterated. Fonr pairs" of pleopoda present. 



Male with abdominal segments fused 73 pi. 



a\ Body of female with neither side swollen. Thorax distinctly segmented. AMo- 

 men consisting of six segments. All the legs present on both sides 

 0. \ ropoda wanting. 



c. Pleopoda in female simple, lamellar 79 Bopmus 



c^ Pleopoda in female obsolete, replaced by fleshy ridges 80. ^Bopyroides 



f/. Uropoda distinct. Pleopoda in female present. Legs of female with an adhe- 

 sive process (exopod) attached to the coxal joint of all the legs Feet end 

 in blunt claw. Ab.lominal aj-pendages form sharp, finely fringed branches. 



r,^ „ 81. Leidi/a. 



78. PHRYXUS Rathke. 



182. PHRYXUS ABDOMINALIS {Kr0yer). 

 Bopi/ms abdominalis Kb0yek, Nat. Tidsskrift, II, 1840, pp. 102-289 pis i n- 

 Monog. Fremst. Slsegten Hippolytes nordiske Arter, 1842 v 263- Vov' en 

 Scand., Crust., 1849, pi. xxix, fig. 1. i- ' .■ 



PhryxiishippolyiesIiATHKE, Fauna "Sorwegens, 1843, p. 40, lA u fi^^ l-lo 

 Phry.ra, abdominalis LiLWEHORG,0efverB. Kongl. Vet. Akad. Forh. ^IX 18o-> p 

 H.-Steenstrup and Lutken, Vidensk. Meddelelser, 1801 p 275 (9") — 

 Bate and Westwood, Brit. Sessile-eyed Crust., II, 1868, p '>34 — Noi«i \x 

 Rep. Bnt. Assoc, 1869, p. 288; Proc. Royal Soc. Lon., XXV, 1876,' p' 

 209.-BrcHHOLz, Zweite deutsche Nordpolfahrt, 1874, p. 287— Metzcer 

 Nordseetahrt der Pomm., 1875, p. 286.-Miers, Ann. Mag. Nat. Hist. (4)' 

 XX, 1877; p. 65 (15).— Smith in Harger, Proc. U. S. Nat. Museum II' 

 18/9, p. 158.— Harger, Rep. U. S. Fish Com., 1880, Pt. 6. (See Har-er for 

 synonymy).-AxEL Ohlin, Bidrag till Kannedomen om Malakostrakfaunan 

 1 Baffin Bay och Smith Sound, 1895, p. 18-19. 



mbltat-Mas^tichusetts Bay on Fandalus horealk, Splrontocark 

 sjmms, 6. securifroiu and Pandalm mmtagui; Cashes Ledge Gulf 

 ot Maine, on Pandah,. lorealh and S. pmhla; Georges Bank on Pan- 

 dalm l^^toecrm; Halifax, Nova Scotia, on S. jnmo/a, S. ^nvmand 

 ^. seciirzfrms; Cape Cod on S. polaris; Grinnell Land; DiscoN-erv 

 Bay; Greenland; Cape Dudley Digges on S. turqida '^.x^d S. polar k; 

 Ingleheld Gulf on S. polaris; 78- 48' N. lat., 80° 80' W. lono- on S. 

 polarts; 64° 56' N. lat., 66^ 18' W. long., on S. farqkJa: alsoriiritish 

 Isles; Scandinavian Coast; Spitzbergen; Kara Sea; Coast of Norwav. 



JJejJth. — 5 to 25 furlongs. 



79. BOPYRUS Latreille. 



ANALYTICAL KEY TO THE SPECIES OF ROPYRIS. 



a. Head posteriorly narrowed, triangular in shape. Antero-lateral angles not pro- 

 duced into lobes. Abdominal segments with lateral margins conti.n.ou^ 

 Color whitish, feet and incubatory lamell;e pigmented with black. :^Iale with 

 ■\^^ '^'r"^\ ^^''^- t^'VVir^'x palsemoneticola Packiird. 



Proc. N. M. vol. xxiii 87 



