53 



31. NucuLA suLCATA, A. Adams. 



N. testą valde convexa, ohliąue ovata, umbonibus prominulis, latere 

 antico hi-eviore rotundato ; pallide olivacea, concentrice valde 

 sulcata, radiatim striata, striis ad marginėm valvarum validi- 

 oribus; margine valvarum crenulato. 



Hab. New Zealand. Mus. Cuining. 



^./^. 32. NucuLA CASTANEA, A. Adams. 



N. testą ovali, perobliąua, subcompressa, castatiea, latere antico 

 breviore truncato, lunida In medio prominenti, latere postico 

 declivi, rotundo; vix Icevi, obsolete concentrice sulcata, obscure 

 radiatim striata ; margine valvarum creberrime crenulato. 

 Hab. New Zealand. Mus. Cuming. 



An oval, very oblique, rather compressed Nucula, with the anterior 

 side truncate and the luuule prominent in the middle, nearly smooth, 

 but obsoletely striated, and \vith the margin very finely crenulated. 



33. Mactra Mari^, A. Adams. 



M. testą ovato-transversa, compressiuscula, aolida, incequilaterali, 

 later^e antico paulo breviore, epidermide olivaceo-fulvicante 

 induta, maculis rotundatis conglomeratis et distitictis rufo-fuscis 

 irregulariter pieta, umbonibus albidis, transversim sulcata, 

 suleis postice corrugato-plicatis ; lunula areague stdcatis; intus 

 alba ; pallii impressione margine inferiore remoto, sįnu profundo, 

 oblique triangulari. 



Hab. ? Mus. Cuming. 



This is a large and handsome species of Mactra, omamented with 

 rounded, distinct, and oblong conglomerate spots, which are most 

 uumerous towards the beaks. 



34. ScROBicuLARiA Seychellarum, A. Adams. 



/S. testą transversim ovata, inceąuilaterali, latere antico breviore 

 rotundato, postico longiore declivi, subattenuato et rostrato, 

 utrinąue vix jlexuoso, lactea, nitida, stdcis concentricis posticis 

 et obliquis anticis divaricatim sculpta ; cardine ligamento ex- 

 terno, cartilagine interno in fossa obliąua prominenti posito ; 

 sinu pallii impressionis valido et profundo. 

 Hab. Seychelles ( — Riclcetts, Esq.). Mus. Cuming. 

 This is a very peculiar shell, with the generic characters of Scro- 

 bicularia, or rather those of the subgenus forming the Capsa of 

 Bose, or Scrobicularia b. of Schumacher, and which are usually re- 

 • garded as Telliuas. 



.5. ObSERVATIONS ON StRONGYLUS FILARIA AND BOTAURUS 

 STELLARIS. By EdWARDS CrISP, M. D. 



Dr. Crisp exhibited specimens and drawings of Stro7igylus Jilaria, 

 which he discovered had lately proved so destructive to lambs in 



