Dr. F. R. Ccnvper Reed — Sedgiuick Museum Notes. 545 



4. The Pliocene Mollusca collected hy Strickland from Lixouri in 

 tlie Island of Cephalonia are well preserved, and inclnde the original 

 tj-pe-specimens (one of each species) on which his new species Fusus 

 Jilamentosus and Mitra juniperus were based. Text-figures of these 

 shells were given in the paper mentioned. The existence and present 

 resting-place of these types had apparently been unknown until their 

 recent rediscovery and recognition in the Sedgwick Museum. 



There are also some British shells in Strickland's collection to which 

 reference may here be conveniently made. 



1. The original type-specimen of Strickland's species Unio 

 antiquior, from the ' Fluviatile Drift ' of Cropthorne, Worcester, of 

 which a text-figure was given by Sir W. Jardiue in his Memoirs of 

 H. E. Strickland (Loudon, 1858), p. clvii, and of which a description 

 was given in the same work on p. 97, has been recently identified in 

 the Sedgwick Museum. 



2. The specimens from the Pliocene of the Isle of Man on which 

 Strickland founded his species Fusus Forbesi and Nassa pliocena 

 (Proc. Geol. Soc, vol. iv, pt. i, pp. 8, 9, 1843) have also been 

 discovered in his collection. They were mounted together on the 

 same tablet with some other broken shells of doubtful reference, 

 and all were labelled Fusus Forbesi, while one good specimen 

 of N. monensis, Forbes, whicli was also described in the same 

 paper by Strickland (op. cit., ]>. 8), was mounted separately 

 with a broken fragment and labelled Nassa pliocena. This con- 

 fusion was pointed out to me by Mr. F. W. Harraer, who 

 has recentlv described and figured typical specimens of N. monensis 

 {Pliocene Mollusca, pt. i, p. 74, pi. iv, figs. 7, 8, 1914). Strickland 

 published his specific definitions of F. Forbesi and N. pliocena without 

 figures, which is unfortunate; but as his descriptions are fairly 

 minute and precise, and as we have the very few actual specimens in 

 his collection which he used in drawing up his definitions, we are 

 enabled to identify and separate the type-specimens of the respective 

 species without hesitation. There are only two examples of each which 

 are fairly well preserved. The mistake in the mounting and labelling 

 of these specimens seems to have been made at an early date (but by 

 whom is unknown); for Sir W. Jardine, in 1858, in his Memoirs, 

 to which reference has been made, gave four text-figures (op. cit., 

 p. ccxxviii) of four of the specimens now in the Sedgwick Museum ; 

 two of these (figs. 1) were called F. Forbesi, and two of them 

 (figs. 2) iV. j9//or^/m. The two left-hand figures (figs. 1) represent 

 shells belonging to F. Forbesi, but tlie right-hand and smaller one of 

 fig. 2 is JSf. moneiisis as identified by Mr. Harmer ; the other 

 fig. 2 (second one from the right) is the broken fragment mounted 

 with it of which the specific reference is doubtful. The true 

 N. pliocena was thus not figured by Sir W. Jardine, and under these 

 circumstances it is of importance that the actual specimens which 

 Strickland used in describing this species have been discovered. 

 Lamplugh (Geol. I. of Man, Mem. Geol. Surv., 1903, pp. 336, 475) 

 includes N. pliocena, Strickl., in N. serrata, Brocchi 



DECADE VI. — VOL. I.— NO. XII. 35 



