No. 386.] A PECULIAR TOAD. I4I 
apparently, in connection with the abnormal arm a duplication 
of some of the muscles of the chest and normal arm. 
a = abdominal portion of pectoral muscle. 
6= posterior sternal portion of pectoral muscle. 
c = anterior sternal portion of pectoral muscle. 
J is evidently intended by Mr. Wetherbee to represent the 
normal sterno-radialis, and g is probably the duplicate of f for 
the abnormal arm. The letter g is not distinct in the cut; it 
lies just below &. 
k, e, and 7 I am in some doubt about from Mr. Wetherbee’s 
description, and hesitate to name them. Quoting from his 
notes: “%, origin anterior edge of abnormal arm and a few 
fibres on sternum, insertion Ą'; e, superficial, origin precora- 
coid, insertion humerus; 7, attached to dorsal surface of abnor- 
-mal arm and to under surface of normal arm.” 
He also says in his notes: “The infra spinalis muscle was 
nearly twice normal size, and was inserted by two tendons to 
the fifth arm and [by] one to the normal arm.” 
The blood system did not offer enough peculiarities to 
warrant a reproduction of the drawing; the in-going and out- 
going blood of the abnormal arm passed through extra branches 
of the subclavian artery and subclavian vein, respectively. 
BIOLOGICAL LABORATORY 
UNIVERSITY OF tes Sept. 20, 1898. 
