60 MB. S. nANLEY ON THE LINNEAK MS. OF THE ' MUSEUM ULRICA.' 



PINNA. 



The definition was not precisely similar in words to that of the ' Systema,' 

 but the sense varied but little. It ran as follows : — 



Testa oblonga, merabranaceo-fragilis, basi angustata. Cardo nullus, 

 sed valvis altero latere coadunatis ut una appareat. 



P. RUDis. P. rugosa squamis fornicatis per seriem digestis. 



The name of this shell, identified (I think wrongly) by our author with 

 the one he had termed rudis in the ' Systema,' was originally /orwica^a. 



P. NOBiLis. P. squamis canaliculato-tubulosis subimbricatis. 



P. MURiCATA. p. striata, squamis concavis ovatis acutis. 



" List. Hist. t. 370. no. 215," and " Sloan. Hist. i. p. 254," were pre- 

 sent among the original synonyms. 



P. ROTUNDATA. P. squamis obsoletis, testae margine rotundato. 



P. SACCATA. P. nuda saccata erectiuscula. 



P. DiGiTiFORMis. P. nuda digitiformis incurva. 



P. LOBATA. p. nuda lobata. 



In addition to the printed species, an anomalous Pinna, which I doubt 

 not was the Lingula anatina, is here described. 



P. viRiDis. P. ovalis, basi compressa. 



Generis dubii hue relata, donee certiora determinentur. 



Testa utraque ovali-oblonga, viridis, intus magis pallida; quasi com- 

 pressa, et fere naviculata, acutior. 



ARGONAUTA. 



The intended name of this genus was Cymbium, the one applied to it by 

 Gualtieri. 



A. Argo. Cym. carina dentata. 



" Bonan. 1. f. 13," and " Klein, 3. t. 1. f. 3," were the unprinted syno- 

 nyms. The intended specific epithet was C. papyraceum. 

 NAUTILUS. 



There was no definition of either this, or of the preceding genus, in the 

 written catalogue. 



N. PoMPiLius. JV. apertura cordata, anfractibus contiguis. 



The unprinted synonyms were " Bonan. 1. f. 1, 2," " Breyn. Polyth. 

 14," "Pet. Amb. t. 3. f. 7," "Pet. Gaz. t. 99. f. D," "Klein, 2. t. 1. 

 f. I, 2," and " Bellon. Aquat. 318. t. 382," Seba was not quoted. 



N. SPIRULA. N. apertura orbiculari, anfractibus distantibus. 



The I in the reference to Rumphius was a misprint for the written 1 ; 

 "Bon. 1. f. 39," "Breyn. Polyth. 21. f. 2," " Klein, 5. t. 1. f. 6," and 

 " Petropol. Mus. 532. n. 6," were the unprinted synonyms : " tubo " was 

 an emendation. 



CONUS. 



Testa oblonga, cylindrica, deorsum attenuata. Apertura longitudinalis. 

 Labium edentulum. Os non reflexum. Columella Integra. 



This most natural genus had the precise limits ordinarily assigned to it. 



C. MARMOREUS. C couicus fuscus, maculis ovatis albis. 



