ANATOMY OF A MONODACTYLOUS FOETUS 



389 



forearm curves somewhat inward and the carpus is sharply 

 flexed upon it and the hand thus comes to he across the body 

 under the chin, with the palm facing caudally. 



The left arm has no accessory appendages or indications 

 of any of the missing parts, but on the right one (fig. 4) there is a 

 flattened appendage attached by a very short narrow circular 

 stalk to the medial surface of the forearm almost at the elbow. 

 This structure widens immediately Ijeyond its attachment, being 

 much compressed and running back applied against the surface 

 of the arm, and from the distal part of this broader portion 

 a narrow finger-like process extends at right angles up in the 

 line of the limb, pointing toward the hand. This appendage 

 strongly resembles another digit arising at the elbow. 



Measurements of the foetus, and especially of the deformed 

 limbs are here appended in tabular form: 



Weight of foetus 1280 grams 



Length from vertex to ischial tuberosity 325 mm. 



Ischial tuberosity to bend of knee 80 mm. 



Bend of knee to tip of heel 75 mm. 



Ischial tuberosity to tip of heel 155 mm. 



Tip of heel to distal end of digit 1 63 mm. 



Deformed upper extremities 



THE AMERICAN JOURN.\L OF ANATOMY, VOL. 22, NO. 3 



