46 mb.s.hanlet on the linnean ms. of the 'museum ulbic-s!.' 



Museum Ludovic^ Ulrica E-egin^. 

 CONCHTLIA. 



CHITON. LEPAS. 



Nothing relating to these two genera was found in the copy. 



PHOLAS. 



The Pholas of the manuscript is perfectly dissimilar to that of the 

 ' Systema.' Our author had evidently, when he first wrote the ' Museum 

 Ulricae,' not appreciated the remarkably striking characteristics of this 

 group, having located the only species he then knew (for P. candidus seems 

 a subsequent discovery) with the Salens. 



P. CANDIDUS. Not mentioned in the manuscript. 



P. CRisPATus. Sol. ovatus, obtusissimus, cardinis dente depresso ro- 

 tundato. 

 The Appendix to Lister was not cited ; " Habitat in Anglia, Suecia," was 

 appended to the description, which in many respects was inferior to the 

 published one. The account of the hinge was merely " Cardo dente dila- 

 tato rotundato extus excavato." 



MYA. 



The three incongruous forms assorted as Mi/cb were not so imited in the 

 MS. ; the second being very properly placed with the Mussels, the other 

 two ascribed to Solen. 



M. LUTRARIA. Sol. ovali-oblongus, cardine laterali dilatato semior- 

 biculato. 



In lieu of the reference to Lister (whose work does not appear to have 

 been consulted by our author at the period when this portion of his manu- 

 script was written), plate 45, figure N, of Rumphius was quoted as illustra- 

 tive. The published account of the hinge is much more complete than the 

 written one, which was apparently drawn up from a worn specimen ; it 

 ran as follows : " Cardo extus vix gibbus, intus constans laminis 2 semi- 

 orbiculatis concavis introrsum spectautibus." 



By a slip of the pen, in my ' Ipsa Linnsei Conchylia,' I had tei'med 

 Brown's figure of the Linnean Mya lutraria, L. oblonga, instead of L, 

 elliptica. 



M. PERNA. Myt. Isevis, cardine terminali unidentato. 



The intended name was M. Magellanicus. 



M. VULSELLA. Sol. oblougus, liuguseformis, cardine terminali dilatato 

 semiorbiculato. 



" Pinna linguaformis subfalcata" was written after the reference to the 

 ' Museum Tessinianum;' hence it seems that Linnaeus did not himself 

 consider that he had used the binomial method in that work, or he would 

 have quoted it as P. lingulata. 



" Rumph. 148. t. 4G. f. a," and " Gualt. t. 90. f. h," were the impublished 

 svnonvms. 



