WIELAND: THE OSTEOLOGY OF PROTOSTEGA a 297 
V. M@rasuREMENTS OF PROTOSTEGA GIGAS. 
(All based on the single individual illustrated in Text-figures 2-7 and Plates I. 
and II. As most of the elements are much flattened lengths only are given, these 
doubtless remaining much the same as in life.) 
(A) The Lower Jaw. 
Length on median line (estimated, the tip being broken away )......-......-...:cesseeeereees 26 em. 
ILGEHO AIO MEE TATA TIS., nosoooqcedno06069 ba00G0 ZooseeooEbosnoB0doe9DDUEDOEBEseEEDoL OGDGBOODeH cao0De Se: 30 ag 
(B) The Carapace, Ribs and Dorso-sacral Centra. 
Total length of the tem dorsal Centra...............002ceceeees veces teseeseteceeeeccsesetensecrens esses 68 Se 
Total length of the three succeeding centra... ae 
Length of the dorso-sacral series a 
Extreme width of the carapace (exclusive of marginals) as crushed out flat and meas- 
ured from tip to tip of the fourth ribs, both of which are complete and are the 
NOC EITH Cl WO slo) SOPIES-coccoosaedonsedcan scconsoes toneadocn oacodens sobaed “coqoon secdsquadDoDUDEEETEE 106 Mi 
Length of the first to tenth dorsal centra respectively, 5.5, 7.5, 8, 8, 9, 8, 7.5, 6.5, 4, 4 o 
Lengths of the first and second sacral and first caudal centra respectively, 3, 3.5, 3.5 ae 
IL CTA OF NG) WEL Tell) scccodcaco cosede one oocdcb cgnoadocadodonqode aoasbosuEouGanbedso0eKy eogngoSbdoadoDCBeS ue 
ay CO" SACOG THOS coonegssocds voccancedans coumeas Sdakodbaaraaba sbabaquaecad voseod debatbaneogapesead fe 
Re UC) HOLA 810 es saacee aoc tes daebaon Gootecoe neanecaasesabon Acco te ae 
oa BG") HIRAM Talle) cscnoo edooa0, 6booneaoboccodéde aosde0 gsansa sooDoodoabobcoUBoNGDecHOdpaGdDHoDaDd booed tf 
a BG: GISs(H0) TIN): ganna eqeson soe saacaboaccoaaoR one4eodtetedho, Seobbe p9s0n# bo bosUEdoDN pacHabEocGoBUES te 
= SOs SASS VEN blot bipeseaacacse scares Naas aries camer cans cchecae. rehedeemt ame ne cease seekers 4 
Length of first sacral rib (in place) if 
(C) The Shoulder Girdle. \ 
Distance apart of the two distal extremities (the scapular and the precoracoidal) of 
HES OCU EKG OREO DUE re, ce nqbocucbeEboedo pteebbone n960900R bogcoqeID900000 ocobo5 pobBNn voRHEN oRdceDconed 30 oe 
Length from interior bow of procoraco-scapular to the glenoid cavity............... 00080550 13 ig 
JOA VATE NS CORO. os cocoen sooooonbobeGseedasnoeoc8bn oSsbapqq0qdG0ce cdooHa cdeboducEcttiagendanas coaB008 40 ey 
_D) The Pelvic Girdle. 
Length of pubis (outer exterior border, on straight line)..........0...6.scceeceee seeeeeeee cece 18 sf 
IEF GE THOU ossocosaqcocso0, bydede00 sone nobondebd edaouc baonen sobocaHeNq00HEdG00 HEEHODNAD HoORODESSCCNE SED ees 
ILGEPAIN Or TTT, oscospeqnconssnus sooodoess aasbaacoasoscaboUNEEE0Nde DecsDUdeNDOND deopasoetadaeipooud seouG9e00 18 sy 
Length of pelvis on median line a EGG) 
Width across pubis at broadest point........ ........c..ceecscecscceercseeerecesen teense cecsteeecaeces 48 me 
(E£) The Limbs. 
The greatest spread of the front flippers (as based on measurement from the approxi- 
mate median line of the shoulder girdles to tip of longest finger) Sadacon saaseees boneUaueG 250 ts 
Greatest spread of hind flippers uP 
(1‘ The Front Flipper. 
Length from glenoid cavity to tip of finger IID...............0..-1ece eee nneee eee eee neeee ee eeeeee 106 UK 
HOSEN GI! INTERES ossonn08 sees phebs uocoodod pacacebun sdorreaecach yesdonocEOkusacaabequanSseaqee edobonnades 34 Ha 
TLSayet ts Oe NAGTIE) opecnconed oeceooe sodes vous obovodanee vonsagoas hasooDotDeosocegacbosean canepnicanenocodsoctiageoN Ct 
Length of ulna... a 
Length of intermedium.. ................ Jade dhe socacodaso syenguiane ioccbagoadeadacane ssnoaegoecosaLo Sna86s Uigoy. eee 
WWF INOS FS AEN Ui eon oben cpacosusonunes ceoeoooconscbe Seat Bbet ecaSRcRR ARE Ve oa me cenapRenD edadseete ahi) 
Length of carpale 1..............6.2.006.- Dondeus Boenddo0 _cedubecd ono ses Satsee seneisdosenooseRoconSeaD canetis 5 a 
cs 
Length laterally across carpalia 3-5, which remains as recovered naturally articulated. 10.6 
