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Xii MEMOIRS OF THE CARNEGIE MUSEUM 
d Pyoosirel (0) Meer On iea Eo) co ice an ie ry pebthy eh edn Riera ae eres icant eerie le Urata tin Sel ent ay er ee 271 
ims ones Ola Orie amiss tet rene Woh mera tin cent eeen ayes aRB heven pokes 274 
NS ORS AUNT OD) Orgran ay ae ame ee It oles PA ae, Tee Spain ope ee mR ate 274 
Alveolar Border and External View of Jaw of Brachypsalis pachycephalus Cope.... 277 
ukiventlo lan de G lenin clned Cecsrey awake hereto ey acy Pies ee ee et 281 
Right Gulls obWargaritana margarmuyera (uinmeus) 2... ... 5.2.25. a ee 285 
heft Halt ot Body, of Anodonta grandis gigantea (lea). 2... 0.. 2.0 os a en ee 288 
EOstelIOie Views Ol BOCs OLD Ormae raed eS oumuare cet: PAAR an. vin Butea vigrabe tiie 289 
TPG Uteiloged My alg he fost sd BoLaly ajc Dopey Og ec Vue treet teeter scemeneaaes Toa aol mene at Cite. ver ae oat 289 
Posterior View ol body of Wo. showine openings: 2.828050 hain oY bevel nate 289 
LEGTUPSUUSHECTINICOSGs (DAUMOS) tae aka hes hk  Calnvid ass. Badd i Aq ce Ekibi wands b 319 
EG DSLiS VenUnCOsa. unto mu sN Lane Mapes eee ou cease dan te nce eth ae bik OlO 
Figure of a Sting-ray from Aldrovandi (De Piscibus, Vol. IV, p. 443)............. 352 
GanCOnTdss OS COMO OTD CUI E MND ASRIT sec eis ene Wench Ain aie ye Ue Ba is pe 354 
Men eT NONE NiO luda MNCStOPALIODN OlnikCAC! eugene 5: Waele Ate ether 5 ctnan wee 367 
PALE USUI Is OC LOU UIT aIN Oe SSI Tatars 0 ase a WN eta Pisin eevee. Riel enatke Sieber aT 383 
UCU US NOOR GUO Oil de NIMeiine Mere So ple eran vile Nis ik SUR gh MAT Min eos 387 
USTOCHUUS LONEUOSURU SN Olle mcemie eR mig 1K ay WH athe igi ee eRe as A aioe tis 387 
