290 Mr. H. E. Strickland on the Dodo and its Kindred. 



exceeding the costals in length and supporting the intercostals 

 on their upper truncated edge; all the plates marked with 

 thick radiating ridges, one to each side, except in the pelvic 

 plates, which have them only in the three upper sides, the 

 lateral pair being the forked ends of the strong vertical ridge 

 of the costal or radial rows ; average length of cup from pelvis 

 to base of rays, 1 inch 6 lines ; width the same ; length of pelvic 

 plates 3i lines, pentagonal first costal 3 lines, hexagonal second 

 costal 2^ lines, heptagonal scapular plate 3 lines, hexagonal 

 first arm plate 2- lines, second arm plate 2 lines. 

 This fine species differs from the Glyptocrinus decadactylns 

 (Hall), of the Hudson River group of New York, by the great size 

 of the pelvic plates, and their being hexagonal instead of penta- 

 gonal, and their bearing the intercostal plates directly on their 

 truncated upper edge, the intercostals in the American species 

 being supported on the sides of the laterally united first costals, 

 which latter plates in this species are completely separated. The 

 first arm-plates are laterally united without the intervention of 

 an interbrachial plate, which exists however between the second 

 arm-joints, nearly equaling them in size. In one of the most 

 distinctly preserved intercostal spaces, three interscapular plates 

 are seen to rest on the upper half of the octagonal intercostal, 

 the lateral ones being pentagonal, and the middle longer one 

 hexagonal. All the plates seem to have been thin, and allow 

 considerable variety in form of the cup from slight pressure. 

 Not uncommon in the calcareous schists of Alt y Anker. 



XXVII. — Supplementary Notices regarding the Dodo and its 

 Kindred. No. 9. By H. E. Strickland, M.A,, F.G.S. 



[Continued from vol. iv. Ser. 2. p. 339.] 

 9. Discovery of a third example of a Dodo's head. 

 I HAVE much pleasure in communicating the following extract 

 of a letter addressed to me by P. L. Sclater, Esq., of Corpus 

 Christi College, Oxford, who has just returned from the conti- 

 nent. It affords another instance of the interesting discoveries 

 that may be made by searching the penetralia of old established 

 museums, especially in towns not often visited by scientific tra- 

 vellers. 



" What I wished to tell you was that at Prague, in the B'oh- 

 mischen Museum, there is a veritable skull of the Dodo ; — that is, 

 all the frontal portion, just as much as we should leave in pre- 

 paring a skin, — which I believe you are not aware of. They have 

 also casts of the heads at Oxford and at Copenhagen. M. Max. 

 Dormitzcr, Assistcnt am BiJhmischen Museum, Prag. no. -"]*, 



