118 .MKRISTK 1 VARIATION. [PARTI. 



<>t articular processes to the human numbers is especially 



worthy of notice-.] 



* Simla satyrus (Orang-utan). Out of eight skeleton* in the 

 MM-. ('..I!. Surg., C 7, ]> 12, I. 4 occurs in seven. In young 

 -[. -iim-n- tin- distinction between the last lumbar and the tir>t 



al i- . l.-arly shewn by presence of pleurapophysial ossifications in 

 tin- t ran>\ .-I >.- processes of the latter. Thus though Simla resembles 

 Man in the number of ribs, it differs in the total number of prae- 



i.il \ i i tebru-. Cat. Mus. Coll. Snrg., 1884, ir. p. 10. 



Tin- ananiri-nient C 7, \> IL', L 4, S5 occurs in a great number 

 "t pecimens it'.ir cases quoted, see ROSENBERG, Murph. Jnhrl>., i. 

 p. 1'H i. Tabellen : Cut. Mu. Coll. Sury. Arc.) 



Adult male, Sumatra. C 7, D 11, L 5, S 5, C 2. J/.s. Co?/. 

 .s'//, . \ . .",7. 



87, Foetal skeleton. C 7, D 11, L 5, S 5, C 2. TRIKCHESE, S., 



A,, a. Mus. ./'/. .^f,,ri'i mil. H'liucn, 1S70, p. 4. 

 :iv Adult. (' 7. l 11, L 4, 8 + C, ankylosed together, containinu 



- pieces. Camb. Univ. J/MX., 11 GO, A. 



A. lult. C 7, D 12, L 4, 8 4, 3. The last lumbar shared 



in -.iippurtiin,' iliai- bones, i-i. BLAINVILLE, Ostcoyr., Primates, Fs<\ i. 



P. i". ( . 

 j.ii A yuun^' >pci-inii-n. well pivx-r\ fd : there were certainly L 4, S :\. 



1 I, but in the adult mention. 'd above, one of the coccygeal was 



ji'iin-d ti tin- -ac-niin. in; ]'>LAI\ vii.u:, !/,<./. 



41. ^'Munu' >pi-i-iiiii-ii in ^|)irit, (' 7. I I 2, L 4, S 5, C 2. ROSE.VBLIM:, 

 I '. . .!/(.//.//. Julii-li. i. p 1 ill i. 



42. Sp,-ciiii.-ii in spirit, not full .Ltro\\n. ('7. \t 12, L 4, S 5, C 1. 

 Tln-n- \va- mi d'.iil.t that only nm- (-u.-i-ygi-al was present. ROSENBERG, 



ibid. 



C. Hylobates. ( 'nn>id.-raM- ditl'.-iviu'cs in the nuinber of vertebra? 



and nl^ fniind in tlii- -emis arc n-i-nrdi-d in tin- Catalogue of the 



MU-. -uni of tin- ('ollt-iri- "f Surgeons, ifec.; since however the specific 



di\i-imis nf tin- ^.-iiu- are very doubtful (see ('.itnl, ,,/n, . II. p. 15), 

 it i> n. it po^il.l.- tu cniisider thev,. ;1S ne.-es^arily indixidual \ariations. 



3ee ol o EIOSBNBERO, /.., /'-/// '/.s-.] 



BRADYPODID^E. 



To the study of Variation of ih,. \n-tcliral iv-ions the phcno- 

 inciia seen in tin- Sloths are of exceptional importance, and in 

 attempts to trace the homologies ..f the segments special attention 



ha- aluay* been p,-ud to th.-in. The folloum-- table , ..... bains brief 



particulars ..f il specimens of Bradypus &nd II of CAotepws seen 



by niv-elf in Kn^li-d, museums, and .if a few others of which 



descriptions ha\.- been published. To these is added a smmnarv 

 "' -K' specimena of Bradypus and n of Cholcepus in (J.-nnaii 

 museums 1 examined by WELCKER. Bis account is tnifortiinately 



not -i\.-i, in detail, Inn I ha\e tabulated his results so tar as i's 



vi/ - ' " Tiil.iii>.'.-ii. MiirliuiK. b.'ii/i/. Trankfuit. lii-rlin. (liossi-n. Jena 



and Hull.-. 



