ME. S. HAFLEY ON THE LINNEAN MS. OF THE ' MUSETTM TJLBICiE.' 57 



O. MAXIMA. Pec. radiis 14 rotuiidatis longitudinaliter striatis. 

 In place of Gualtieri, *' List. Ang. 184. t. 5. f. 29. Pecten maximus," 

 and " Faun. Suec. 1343 " were referred to : these synonyms had been 

 added subsequently to the description. 



O. Jacob^a. Pec. radiis 14 angulatis, fomicis longitudinaliter striatis. 

 The cited drawing of Gualtieri was not mentioned. 

 O. ziczAC. Pec. radiis 18 explanatis. 



No specific name was attached to this, the preceding, and the next two 

 species. 



O. STRIATULA. Pec. radiis 16 obliteratis, transverse membranaceo- 

 striatis, margine integerrimo. 



O. MiNUTA. Pec. radiis 20 convexis. 

 O. PLEURONECTES. Pec. radiis 12 duplicatis, extus laevis. 

 O. OBLITERATA. Pec. radiis 24 duplicatis, extus laevis. 

 O. RADULA. Pec. radiis 6 convexis decussate striatis, margine cre- 

 nato, auricuUs aequalibus. 



O. PLICA. Pec. radiis 16 convexis laeviusculis, decussato-striatus. 

 No specific name was appended to either this, the next, or the two 

 preceding species. 



O. PALLIUM. Pec. radiis 12 convexis, striatus.scaber, squamis imbricatus. 

 This with the remainder of the Pectens (as far as flavicans) formed a 

 group characterized by ** Auricula altera intus ciliato-spinosa.** 

 O. NODOSA. Pec. radiis 9 nodoso-vesicularibus. 

 O. PES-FELis. Pec. radiis 9, laevis, fornice squamis fornicatis. 

 The printed diagnosis, or heading, was evidently drawn up from a differ- 

 ent shell. 



O. PELLUCENS. Pec. radiis 9, laevis, fornice squamis cochleari-hemi- 

 sphaericis. 



No name was attached to this or the next shell. 

 O. SANGUINEA. Pcc. radiis 22 scabris, semiauritus. 

 The reference was not to plate 74 (as printed) of Gualtieri, but to plate 

 73. " Purpureus nigro undatus '* was written after the indicated colouring. 

 O. VARIA. Pec. radiis 30 scabris explanatis. 



" Et omnia eadem " followed " sanguineae " ; " striis compressis echi- 

 natis " was not present ; " color pallidior " was in the place of " concolor.'* 

 O. pusio. Pec. radiis 40 filiformibus. 



O. GLABRA. Pec. radiis 10 laevibus planiusculis, internis striis elevatis 

 duplicatis. 



Gualtieri's rude drawing was not quoted. 



O. oPERCULARis. Pec radiis 20 subrotundis, decussate striato-scaber, 

 operculo convexiore. 



O. GiBBA. Pec. radiis 20 glabris, gibbus. 

 Brown's drawing was not quoted. 



O. FLAVICANS. Pec, radiis 8 striatis, margine altero rotimdato. 

 As in the ' Systema,' the next two shells, along with this, formed a group 

 distinguished as having the " ValvuUs altero latere magis gibbis. " No 



