MONOTREMATA. 
Mamm. 59 
Figures arc given of the hearts of Ornithorrhynchus, Echidna , Lcpus , 
Casuarius, and Crocodilus. 
Ornithorrhynchus anatinus. On the structure of its tongue ; E. B. 
Poulton, Q. J. Micr. Sci. xxiii. pp. 453-472, pi. xxxii. See also 0. S. Minot, 
Science, ii. p. 750. 
EcHIDNIDAS. 
^ Echidna acidcata. Its temperature is only about 28° C. (82° 4 F.) ; 
N. de Miklukho Maclay, P. Linn. Soc. N. S. W. viii. p. 425. 
n/j Echidna ramsayi, sp. n. (foss.), R. Owen, P. R. Soc. xxxvi. p. 4, New 
South Wales. 
Proechidna bruijni. The three-toed Echidna was provisionally named 
Proechidna by Gervais in 1877, a fact which had not been observed by 
the Recorder before writing the note on its name last year \cf. Zool. Rec. 
xix. Mamm. p. 40]. Bruijnia and Acanthoglossus are both, therefore, 
synonyms of Proecliidna . [Rec.] 
