Marsh Collection, Pedbody Museum. 



125 



(14) "powerful acromion and meta- 

 cromion processes ;" 



(15) ' ' humerus with exceptionally 

 elongate and prominent deltoid 

 crest, powerful supinator ridge, 

 large entepicondyle and entepi- 

 condylar foramen ;" 



(16) " olecranon process of ulna 

 elongate, ulna grooved anterior- 

 ly;" 



(17) "limited rotation of forearm 

 owing to proximal expansion of 

 radius ;" 



(18) " feet [toes] spreading ;" 



(19) "trapezium extended transverse- 

 ly (as in Pinnipedia, Wortman) ;" 



(20) ' ' dorsal portion of distal meta- 

 podial facets hemispherical, ven- 

 tral portion keeled (as in Fissi- 

 pedia, Wortman) ;" 



(21) "digits angulate, the second 

 phalanges strongly flexed upon 

 first phalanges ;" 



(22) ' ' subungual (retractile) processes 

 of distal phalanges well devel- 

 oped (as in Pinnipedia ; in Fissi- 

 pedia subungual processes small, 

 foramen vestigial, Wortman) ;" 



(23) ' ' ilium expanded on superior 

 (post-iliac) border into a broad 

 lamina ;" 



(24) ' ' pubic symphysis not anchy- 

 losed ;" 



(25) " patella large ;" 



(26) "fibula unreduced, articulating 

 with side of astragalus but not 

 articulating with calcaneum (pro- 

 gressive) :" 



(27) ' ' tibia with twisted shaft and 

 cnemial spine ;" 



(28) " tibio-astragalar facet flat, 

 obliquely placed ;" 



(14) Unknown in all the Limnocyon- 

 inas. 



(15) Deltoid crest in two species of 

 Limnocyon reduced ; other char- 

 acters common to all primitive 

 Creodonts and carnivorous Marsu- 

 pials and therefore not special- 

 ized. 



(16) True of nearly all Creodonta 

 known, likewise carnivorous 

 Marsupials ; therefore primitive. 



(17) Not true of Oxyoena nor any 

 species of Limnocyon thus far 

 known. 



(18) True also of many other Creo- 

 donts ; not a specialized character. 



(19) Not known in any species of 

 Limnocyoninse* but probably a 

 distinctive and specialized char- 

 acter. 



(20) True also of all Creodonta, Car- 

 nassidentia, and Carnivorous 

 Marsupials thus far known ; 

 therefore not specialized in any 



(21) According to my own view this 

 is incorrect. 



(22) I prefer to believe that the intro- 

 duction of the word " retractile " 

 into my original statement is a 

 lapsus calami on the part of the 

 author, since he must surely 

 know that a " retractile " process 

 upon the under side of the claw 

 is a sheer impossibility. 



(23) Unknown in Limnocyoninse. 



(24) Likewise true of all Creodonts 

 and Carnassidents thus far known, 

 and therefore generalized. 



(25) No larger than in Mesonyx, Dromo- 

 cyon, Sinopa, and many others. 



(26) Fibula articulates with calcaneum 

 in Limnocyon, but not known to 

 do so in any other species of Creo- 

 donts. 



(27) Tibia unknown in the Limno- 

 • eyoninae, but cnemial crest is 



present in all Creodonta known. 

 The twisted tibia is strongly indic- 

 ative of aquatic habit and is prob- 

 ably specialized. 



(28) Fairly well grooved in one species 

 of Limnocyon, and not very 

 oblique. In Patriofelis probably 

 specialized and indicative of an 

 aquatic habit. 



