146 MR JAMES COSMO MELVILL AND MR ROBERT STANDEN ON THE 



Philobrya wandelensis, E. Lamy. 

 Phtlobri/a zoandelensis, Ed. Lamy, Exp. Ant. Franc. Charcot, 1903-5, p. 16, pi. i., figs. 15, 16. 



Hah. — Scotia Bay, South Orkneys. Dredged, 6 fathoms, February 1, 1904. 



Modiolarca mesembrina* sp. n. (Plate, figs. 15, 15a). 



M. testa parva, ovato-trapezoide, nigro-brunnea, tenui, convexa, aequivalvi, inaequilaterali, umbonibus 

 prominulis, paullum incurvis, obliquis, interdum partim erosis, superficie omni epidermide nigresceiite contecta, 

 sub lente radiatim longitudinaliter decorata, antice compressa, postice' rotundata, dente cardinali in utraque 

 valva prsedita, pagina interna brannea. 



Alt. 4, lat. 4, diam. 2 mm. 



Hob. — Shore, Port Stanley, Falkland Islands. 



We cannot exactly match this with any of the known species. 



Order Pseudolamellibranchiata. 



Family Pectinidds. 



Pecten colbecki, Smith. 



Pecten colbecki, E. A. Smith, "Southern Cross" Ant. Exp. (1902), Brit. Mus. Publ., p. 212, 

 pi. xxv., fig. 11. 



Hah— Lat. 64° 48' S., long. 44° 26' W., at 2485 fathoms, March 13, 1903. 



Fragmentary portions of the left valve only, the equal auricles being perfect, and a 

 great part of the central superficies. This valve is flattened, and exhibits about fifteen 

 ribs, somewhat uneven. There is uniform, close concentric stria tion. Colour, cinereous 

 white suffused with dull rose-pink, with purplish tinge. Mr Edgar Smith described 

 this species from a single right valve. The substance is so thin and papyraceous that it 

 can be bent to a certain extent without injury. 



Pecten multicolor, sp. n. (Plate, figs. 21, 21a). 



V. testa delicata, mediocri, tenui, insequilaterali, sequivalvi, planato-convexiuscula, variis coloribus ornata, 

 nunc flavida, nunc pallida violacea, interdum rufescente, vel alba, interdum pulchre" maculata, auriculis valde 

 insequalibus, posticis radiantibus, radiis arete squamatis, anticis tenui-costatis, seque squamatis, valva sinistra 

 costis ad 22, lsevibus, in statu juvenili pulclierrime squamatis, deinde laevissimis, paullum irregularibus, 

 interstitiis 5-seriatim arctissime scobinatis, asperulatis, valva dextra costis arctis ad 50, interstitiis interdum 

 planatis, interdum una serie squamarum scobinata decorata, umbonibus acutis, sublsevibus, pagina interna 

 radiatim sulculosa. 



Alt. 21, lat. 19, diam. 5 mm. spec. maj. 

 „ 16, „ 14, ,, 3 „ „ min. 



Hah. — Gough Island. 



A very delicate Pecten, variously coloured, in which the ribs and interstices of the 



* /juaeufSpii'os, southern. 



