36 SPECIMENS OF CETACEA. 



15. Baleen. One of the small plates of a Finner, 66 feet 



long, probably B. niuscidus, stranded in the Severn, 

 January 1885. The plate is mottled brown, grejash 

 yellow, and the bristles are greyish white. 



Donor — Dr G. Washington Isaac. 



[The series of specimens from No. 16 to No. 56 were 

 prepared by Professor John Goodsir from a Rorqual 

 about 35 feet long, which, from the character of the 

 baleen, was B. imiscuhts. They were added by him 

 to the Museum.] 



16. Baleen. Transverse section across the upper lip and one 



half of the palatal mucous membrane of a Rorqual. 

 Six broad plates are at the outer edge, and internal 

 to these are a number of small, band-like plates. 

 From the mottled, striped appearance of the plates 

 they are evidently from B. ■musculus. 



17. Baleen. Eight plates from the same Rorqual, with corre- 



sponding part of palatal mucous membrane and of 

 the intermediate substance in which the plates are 

 imbedded. The plates are mottled brown, grey, and 

 striped ; the bristles are whitish. 



18. Baleen. A similar section from the same part of tlie 



palatal region, showing in addition to the eight plates 

 a number of the smaller plates situated nearer to the 

 mid line of the palate. From the lower border of each 

 plate the bristles project downwards into the cavity 

 of the mouth. 



19. Baleen. Section through another part of the palate of 



the same Rorqual, near the middle line. The plates 

 are narrow bands ; the lower ends are truncated and 

 give origin to bristles, which, as well as the plates, 

 are white. 



20. Baleen. A similar preparation to the last. The relation 



of tlie intermediate substance to the plates is well seen. 



21. Baleen. Section through the palatal mucous membrane 



of the same Rorqual. The plates and intermediate 

 substance have been taken away, and the folds and 

 papillae by which they are produced are shown. 



22. Baleen. A fold of the palatal mucous membrane showing 



three narrow whalebone folds with their characteristic 

 papilla3. 



23. Tympanic bulla, section of. It has been decalcified and 



tlie earthy matter removed. Possibly from a B. 

 musculus. 



