NO. 1350. XATVRAL HISTORY OF THE ISOPODA—RICHARDSOX. 



59 



on -V. ioinixoid! ; Adniiralt}' Inlet, Puget Sound, Washington, on S. 

 fr!(h'iis; ^Vilshington Sound, Straits of Fuca, Washington, on S. trldev.s,' 

 ort' (^cMHMi Charlotte Sound, British CV)lum])ia, on S. vxtcrojdithdhiia ; 

 oil' Yah whit Head. \\ ashin^>;ton, on iS". maerophflial uui ; Ilinlink Har- 

 bor, Unalaska, on S. sueklei/i ; .Vrctic Ocean on S. (jahnardiihelclieri 

 (Boll); Plover Bay, Plast Siberia, on -V. y><>A//7*.v(Sa})ine); Alaska on ^^. 

 j)<>l(iris (Sabine); oti' Cape Strogonott, Alaska, on S. f(thricu'{KY0yer); 

 otl' Shuniagin Bank, Alaska, on jS. huin(/ui>i liathbun; off Point Arena, 

 California, on S. DUierophth/dnia j Straits of Fuca on S. tmnni^cndi 

 Rathbun; Philippine Islands on PlrHum'il'a sciiiilaivis (according to 

 Spence Bate)." Also recorded from British Isles; Scandinavian coast; 

 Spitzbergen; Kara Sea; coast of Norway; depth. 5 to !20-I fathoms. 



STEGOPHRYXUS HYPTIUS Thompson. 



StecjophryxvK lii/ptlui^ Thompson, Report U. 8. Fish C'onuii., 1901, pp. 53-5t>, pl,«. 

 ix, X. 



L()c(d'd[i. — Great Harl)or. AV'oods Hole; Hadley Har])or, Nashon; 

 Edgartown and Wai'wick, Rhode Island, on I\((/urus Jongicarpus. 



STEGIAS, new genus. 

 STEGIAS CLIBANARII, new species. 



Head deeplv set in thorax, l)i'oader posteriorly than anteriorly, 

 longer than broad, and with straight frontal margin. First pair of 

 antenna? visible on dorsal surface, just anterior to front, as two small 

 lol)es, each antenna 

 terminfiting in a mi- 

 nute joint. Second 

 pair of antenna^ also 

 visible on dorsal sur- 

 face, lying on either 

 side of lirst pair of 

 antenna\ each anten- 

 na terminating in a 

 flagellum composed 

 of several minute 

 joints. 



Thorax dividend in- 

 to seven distinct seg- 

 ments. The tirst 

 three surround the 

 head and are closely 

 crowded togetluu-. Th(> other four an^ very much h)ngcr and arc of 

 nearly equal length, the lifth being much longer at the sides than the 

 others. The tirst live segments at th(> si(h>s ai'c directed forward. 



Fig. 31. — Stegias ci.ib.vnarii. k, dorsai, vii:\v uk ik.mai.k; /», vk.n- 



TlJAl, VIKW (IF KK.MAI.K. X 8. 



«ChalIenger Report, 1888: Crustaccu .Maciuni, XXIV, pp. {545-646. 



