HERODIONES 



421 



absence of a biceps slip . to the patagiiim. Its leg muscle 

 formula too is that of a heron. Besides these facts — 



-t -!—>■/., 



n 



Fig. 194.~Sykinx of Scopus (aftib Fig. 195.— Deep Plantab Tendons 

 Beddakd). a. Front View. 6. Side of Scopus (afteb Beddaed). 



Fiji, flexor lialliicis ; Fl.p, flexor profundus. 



View. 



which incHne to both the stork and the heron side, and 

 which, perhaps, are the most important of such facts — it 

 may be mentioned that Scopus shows a stork-hke character 

 in the partial division of the pectoralis primus, 

 a fact which was first pointed out by Forbes 

 incidentally, in his report upon the petrels 

 collected during the voyage of the ' Chal- 

 lenger.' The patagial muscles and tendons 

 are not specially distinctive of the affinities 

 of the bird. In my dissection of Scopus I 

 could not find the expansor secundariorum ; 

 but as this muscle is found in most of the 

 Herodiones its absence is not in any way sig- 

 nificant, though it should doubtless be 

 verified. The anconceus has a tendinous slip 

 to the humerus. The deep plantar tendons 

 appear to vary somewhat; in two specimens dissected by 

 myself I met with the two conditions illustrated in the two 



Fig. 196.— DEfip 

 Plantab Tendons 

 of Scopus (aptek 

 Beddabd). 



