Ill' MERISTIC VARIATION. [PARTI. 



*19. Male, in Cambridge Univ. Mus., No. 78. Preparation shews 

 C7, Dll, and the 19th vertebra formed as tin- 1st lumbar: re- 

 mainder nut preserved, but Professor A. ^lacalister kindly informs 

 me that there were 5 lumbars and 5 sacrals, giving C 7, D 11, L 5, 

 S 5. Tin- Ttli \eri.-bra has cervical ribs, the left being large and 

 articulating with a tuberosity mi 1st thoracic rib, the right being 

 considerably smaller, but now broken at the end. Only 11 pair* 

 of thoracic ribs. Change of articular process from dorsal to lumbar 

 Jns partially on the left side between 17th and 18th vertebra 

 tin-lead of between 19th and 20th) and is complete on both sides 

 between 18th and 19th. The 19th bears no rib. [Backward 

 II 'inM-osis, greater on left side than on right, as seen in the 

 tt'-r size of the left rib on the 7th vertebra, and in the change 

 ..f pi-.-c.-sus beginning at a higher level on this side. As the 

 coccyx i- not preserved it cannot be seen whether there is one 

 :ii.-ni I--- ill the whole column, which would be the case were 

 backward Homoeosis complete.] 



"Jo. | male, /. 40. C 7, I) 1:2, L 5, 8 6, C 3. The 7th vertebra bore 

 cerv. ril>-. free <>ii Iri't, ankylosed to vertebra on right. Change of 

 artie. processes partially MM It-tt >[t\<> between 18th and 1'Jtli (instead of 

 lid \\i-i-ii I'.Mh ami I'm In. Twelfth thoracic ribs short, being }\ in. long 

 on I. -ft. 1 in. mi right. STI;ITIII:I;>. .J., J. Aunt. /'/<//*., lS7f>, pp. .">:! 

 an-i [Thei i- then-f,,re backward II oiiueosis, greater on the left 



~ide than on t lie right.] 



\'ei-tel,r:e ('7. l> 1 1 nr 1 1', L ."(or 4, S 6, C lost. Eleven jiairs of ribs. 



Th'- I '.'Hi \iTti'l.ra lia\iii^ a transverse process on the left side re- 



,l>lnr_' tli.-ii nf the MTtelira in-xt lid(i\v it, as ivg;ml> place of origin 



ami its upward slnpc, Imt i^ InM-vr than it l.y l\\\. and is nearly a 



thinl broader and ;iU" thi<-ker. < )n right side corresjionding part is in 



t \\ pi' Change "t' .-uticular processes coni|ilete lietwcen iSth ;md 



L 9th (instead of between I'.'ihand I'otln. '1'heL'lth vertebra is uniteil 



tn >;icnini, but i-- nf unusual sliapi-. dillering -really from a normal 



% 'ill vert. 'lira). '1'lie l".tli vertebra is nevertheless not 



detached frniii >anuiii. S TIM'Tll i:i:s. /. <., p]i. 7 1 ' and -~>7. 



-2. AilnlcM-i-nt >iil.je,-t. 7th cervical, I L' dnr-.-ils and ribs, and .') lumbars 



ei-ved. Ihh rilis reduced. | in. long, 4.1 in. \\ith cartilage. 12th 

 ril^ nidiineiitary, left 1 in., right ^ in. long, lireadth of each about i in. 

 Artie, pi' change ehietly between isth and llth vertebr.-e. 



'.. ]'. 55. 



M-'d'-. "/. 17. 07, h 12, L5, 85, G I. 'I'welfth ribs very unequal; 

 ri-_-lii scarcely L'in., left ."..I in. The :>th lumbar ankylosed to sacrum 

 liy it- i-i-ht transverse process. SH;ITIII:I;S, /.,., p. 57. [Backward 

 Somoeo . on i-iglii >irli- in respeet of reduction of 12th rib and union 



of L'ltll \eltel, |a In -li'MIIII oil that >!<le. ] 



I!. l-'rir,ir<l 



\- was r. marked in the case \ backward Homoeosis, if each 

 vertebra were to I..- developed in tin- likeness of the one which in 



