INVERTEB 



ZOOLOG' 



"" IJrustacea 





KilATHB0Ni 



'[f^tcttthe Prijcfeeaitigs of iihe XcaiJefliy 6if Natural Sciences, lilay'&nd June, 16t)5.'' 



■Descriptions of some of the new Marip.e Invertebratafrom the Chinese and Japanzit 

 Seas. By Wm. Stimpson, Zoologist to the 'U. S. Surveying -Expedition to -North 

 -Pacific, j<ipan -Seas, etc., Lt. John Rodgers, Commander. 



^Communicated by the 'SEaithsosism Institution/) 



POLYPI. 



• 1. ANtEELii LiM&«.TA. Poljpes elongated, slightly tapering tott^ards tbe-mouth. 



pale brownish with eigbtlongitudina:! lead colored stripes ; lentacula bright blue, 



"half as long as the body, r^-ith a single series ef oblen-g, someiwhat irregular pa-- 



pilla?; Length of a polype 1 inch. , 



Hab. China. 



'2. OdRNFLi^EiA ADRiNTiACA. Largo, brainchin'g, pale orange-; tubes -etraight, 

 tjubcylindrical, (clavate when young) ; polypes transparent, with a few short 

 linear spicula3 on the sides ; stomach crimsoa ; tentaeula "with a single series eff 

 elongated, tuberculated .papillae. Height -2 inches. 



■S'ah. -China. 



3-. Alctonium asaricuk. Mushroom-shaped, uppet surface only pclypifsrons ; 

 'pedicel central, one^third as thick as the disc is broad ; disc orbiculttr, convex, 

 ■margin entire, revolute; polypi rather large, three-tenths of an inch long an£ 

 •one-eigbth of an inch distant, tbe surface between them covered with minute 

 dots ; dis-G above bluish-grey, polypes lighter, with still paler tentaoula-; inferior 

 ■surface and pedicel dark cream-coiored, Dia-aieter ;^ inch. 



Hab. -Japan. 



4. Nephthya coccinba. Lobulose, deep crimson ; gpiculse crowded and irregu- 

 larly projecting -arouQd the 'bases of tb^e polypos, which are hyaline, with trian^ 

 gular, papillate tentacles. Beneath each tentaculum in the skin of th* polypo 

 are two rows of minute, linear, crimson spiculse, conver-ging 'toward each other 

 and forming a succession of V-shapefi markings. 



-Jlab. China. 



5. VKREVli;LnK CLATATUM. Variegated, (puttctate -with orao-ge and s.potted with 

 "brown ; foot white, with a pointed extremity ; polypes large, the tentaeula long 

 and slender, their papillse oblong; surface of th« body between the polypes 

 irregulaTly papillose. Length -2 itiches. 



■Hab. China, 



6. Actinia EADiATA. Small, smcofb, olilong, paie brown, 'foulid attached to 

 slender univalves ; when contracted, depressed, radiated with gradually widening 

 streaks of white; when expanded, disc narrov/er than the base, spotted with 

 'flake-wTaite around the •mouth ; tentaeula spotted with dark brown and white, 

 tapering, pointed, arranged in an alternating seriss near the 'margin. Length'^ 

 'inch. 



^Ilab. ITapaa. 



•7. Actinia hfiGROtDNtTATA. "SubCylindrical, smooth, pale 'orange, base some^ 

 ■what expanded; body encircled by two lines of distant black punctae, ten in each 

 ^ine, alternating with the others ; tentaeula rather numerous, long, pointed, dark 

 at base ; those indicating the antero-posterior diameter larger than tbe otbers*. 

 flake-white at base. Diameter^ inch. 



Hab. Otisima. 



