smith: description of new species of NUCUT>A. Ill 



N. lyalli Baird, in Lord's Naturalist in Vancouver, vol. ii., 



p. 369. 



Hab. : Sitka Island, North-west America (Hinds) ; Esquimalt 

 Harbour, Vancouver Island 8-10 fathoms (Baird) ; off Fort 

 Rupert, Vancouver, 12 fathoms (in Brit. Mus.); Puget 

 Sound; and Catalina Islands, California (Carpenter), 



There is little doubt that the N. lyalli oi Baird is the adult 

 form of this species, as suggested by Carpenter in his Report 

 on the MoUusca of Western North America. 



3. Nucula (Acila) mirabilis Adams and Reeve. 

 Nucula mirabilis Adams and Reeve. Moll. Voy. Sama- 



■ rang, p. 75, pi. 21, fig. 8. 

 N. mirabilis Hanley in Sowerby's Thes. Conch., vol. iii., 



p. 155, pi. 229, fig. 114. 

 N. mirabilis Sowerby Conch. Icon., pi. i., fig. 4. 

 N. (Acila) mirabilis H. & A. Adams, Gen. Moll, ii., p. 545, 



Smith, Lamellibranchiata " Challenger," p. 230. 



Hab.: Off Japan and Korea ; off Kobe, 8-50 fathoms (Chal- 

 lenger); Nagasaki Bay (Ad. & Rve.); Pt. Hamilton, 

 Korea, 19 fathoms (Brit. Mus.). 



4. Nucula (Acila) insignis Gould. 



Nucula (Acila) insignis Gould. Proc. Boston Soc. Nat. 



Hist., 1861, vol. 8, p. 36; Otia ConchoL, p. 175. 



Hab. : Hakodadi (Gould) ; and off Cape Blunt, Japan, lat. 

 41° 41' N., long. 141° E., in 35 fathoms (Brit Mus.). 



This species has been confused with N. mirabilis by certain 

 authors. It is, however, quite distinct in form. It is more 

 regularly oval, like the fossil N. cobboldi, etc., and has not 

 the pouting or rostrate extremity anteriorly, and the con- 

 centric strise or minute lines of growth are very much finer. 



5. Nucula (Acila) fultoni sp. nov. 

 Testa ovato-friaiigularis, valde incBqidlateralis^ crassa, epiderinide 

 fusco-olivacea induta, antice acuminata, rostrata, postice 

 rotundata ; margo dorsi posticus elofigatus, leviter ai'ciiatus 

 et declivis, aiiticus valde dcscefidens, ventralis regnlariter 

 arcuatus, antice prope rostrum leviter sinuatus ; umbones 



