CHAP. XIII.] 



DIGITS : MAN. 



329 



are described in detail. The thumb and the supernumerary digit 

 were closely webbed together and were very slightly moveable. 

 Specimen first described by Rijkebusch, Bijdr. tot de Kennis der 

 Polydactylie, Utrecht, 1887, Plates, and subsequently by Spronck, 

 Arch, neerl, xxn. 1888, p. 235, PL vi. — ix. [Condition III.] 



t87 . Woman having 6 digits on each hand and foot as follows. In each 

 hand the thumb has three phalanges, and internal to it articulating 

 with the same metacarpal is an extra digit having two phalanges 

 [measurements given] webbed to the three -phalanged thumb. [Con- 

 dition III of the manus.] Right foot has six complete metatarsals and 

 digits very regularly set, one of them being internal to but longer than 

 the hallux which has two phalanges as usual. The digit internal to it 

 has also two phalanges. Left foot has also an extra digit with two 

 phalanges longer than the hallux, placed internal to and articulating 

 with the metatarsal of the hallux which has two phalanges as usual. 

 Many members of family polydactyle [particulars given]. Strtjthers, 

 Edin. New Phil. Jour., 1863 (2), p. 93. [Note in this case that in the 

 feet the digits added internally to hallux are greater than it, and they 

 thus stand as the largest terms in the series, the other members being 

 Successive to them. The series thus does not decline from the hallux 

 both internally and externally in the way seen in most other cases of 

 extra digits on the internal side of the limb.] 



88. Man having six digits, each with three phalanges, on each hand. 



Fig. 90. Bones of right hand of No. 488 shewing Condition IV. 

 n 1 and n 2 represent the scaphoid, lu, lunar, c, cuneiform, tm, trapezium. 

 td, trapezoid, m, magnum, u, unciform, ac 1 , ac 2 are supernumerary bones. 



(After Eudinger.) 



