P A N P yE A. 



Species 8. (Mus. Bril.) 



Panop^a Middendorfii. Pan. testd subtrigond, angu- 

 latu, concentrice suhlaminatd, versttn umbones con- 

 centrice leviter nigatd, ip/dermiilr fasco-suhviiidi 

 induti'i, iitriiifjue hianti ; lnhrr iintiro hrcvi, ciiiieato, 

 mnrgine dorsali subdeclivi, mun/iiie rt idrali acclivi ; 

 medio planulato, margine ventrali recto ; latere 

 po$tico expanso, subangulato, margine dorsali elevato, 

 margine latero-venirali subtrtincato, Kursum acclivi. 



Mmni-.N-DORK's Pasop.ea. Shell subtrigonal, angular, 

 concentrically laminated, concentrically slightly 

 wrinkled towards the umbones, covered with a 

 greenish-brown epidermis, gaping on both sides ; 

 anterior side short, cuneate, dorsal margin rather 

 sloped, ventral margin sloped upwards; middle 

 rather flat, ventriil margin straight : posterior side 

 expanded, rather angular, dorsal margin elevated, 

 latero-ventral margin rather truncated, sloped 

 upwards. 



A. Adams. Proc. Zool. Soc, 18.'>4, p. ].'>7. 



Hab. Scandinavia. 



Possibly this may prove to be 

 triangidar form of Panopcea splengler 



v'hat 



?pecies 9. (Mus. Brit) 



Paxop^ea Zelanwca. Pail, testa ohloiigo-subrlmia- 

 boideH, pallide fulfil, concentric!: rugatd, utrinque 

 Iruncato, hianti ; latere antico breviiisculo, rotun- 

 datim angalato ; medio late subplanuluto, nrnbonibitg 

 ovatis ; latere poslico oblongn, margine terminali 

 truncate. 



The New Zeala>;d Panop^\. Shell oblong-subrhom- 

 boidal, pale - fulvous, concentrically wrinkled, 

 truncated and gaping at each end ; anterior side 

 rather short, roundly ajigular, middle widely 



rather llattened, umbones ovate; posterior side 



oblong; terminal margin truncated. 

 Qi'OT. Voy. de I'Astrolabe, pi. 83, f 7—9. 

 Hab. Moreton Bay. 



Species 10. (Mus. Paris.) 



Panop.i:a AisiiHEViATA. Pan. testd. nigusd, laminatd, 

 crassd, rotundatim ovatd ; latere antico brevi, 

 parvo, margine dorsali depresso, margine ventrali 

 acclivi, subsinuato ; medio convexo, umbonibus 

 latis, margine ventrali rotundato ; latere posticn 

 siibelongato, margine dorsali rectiilsculo, termino 

 siibcuncato,margine ve^itrali rotunda, versus terminum 

 acclivi ; margine cardinali incrassato. 



The .siioktened Panop;ea. Shell rough, laminated, 

 thick, roundly ovate ; anterior side short, small, 

 dorsal margin depressed, ventral margin sloped 

 upwards, somewhat anuous ; middle convex, 

 umbones wide, ventral margin round ; posterior 

 side rather elongated, dorsal margin rather straight, 

 end rather cuneate, ventral margin rounded, sloped 

 upwards towards the end ; hinge margin thick. 



Valenciennes. Illustrations Conchyliologiques, PI. IX. 

 f. 1, 0, b. 



Punopcea antarctica, Gould. 



Ilab. Coast of Patagonia. 



Species 11. (Mus. Brit.) 



I'ANoPiEA Au^TiiALis. Pan. testd teaiusculd albd, 

 utrinque latissime hianti, concentvic'e rugatd, valde 

 incequilaterali ; latere antico laiissimo, rejlexo, 

 margine dorsali elevato, convexo ; medio compresso, 

 margine ventrali concavo, umbonibus acuminatis ; 

 latere postico angustiori, oblongo, tnmcato, 7nargine 

 dorsali depresso. 



April, 1873. 



