690 MK. F. E. BEDDARD ON THE [June 16, 



anticics, and the pyriformis are exposed and very prominent. It 

 will be seen from the drawing (text-fig. 147) that there is no 

 possible room for an enormous lymph-heai-t like that which I have 

 described and figured in Breviceps on either side of the spine. 

 Nothing of the kind can, I believe, have been overlooked by me. 

 A peculiarity of the obliquus intei-nus is shown on the view of the 

 dorsal musculature which is illustrated in text-fig. 147, obi. int. 

 A fan-shaped origin of this muscle from the ilium is to be seen 

 underlying the obliquus externus. The origin is by a head of very 

 limited extent from the ilium just above the origin of the glutgeus 

 muscle, that is, about halfway down the bone. An iliac origin of 

 this muscle is of course known in liana. 



§ Musculature of lipoid. 



I have dealt at some length in my paper upon the anatomy of 

 Breviceps with the hj'^oid musculature of that frog. This muscu- 

 latui-e presents, it will be recollected, more than one peculiar 

 feature. The corresponding musculature of Bhinoderma does not 

 present many peculiar features, and agrees on the whole with that 

 of Bana, differing therefore from its near ally Breviceps, to which 

 however it presents some likeness, as I have identified, and have 

 no particular comments to make upon, the following muscles, 

 which appear to me to be like those oiBana, viz., geniohyoideus and 

 omohyoideus. The sternohyoideus, on the other hand, appears to 

 me to be like that of Breviceps in that it consists of two portions 

 with a quite separate insertion on to the hyoid. The larger and 

 more superficial half of the muscle has not the same origins as the 

 sternohyoid of Bana, for there is no sterniim to arise from, and it 

 is simply a continuation of the rectus and completely conceals 

 (when the animal is viewed from the ventral surface in the usual 

 position of dissection) the imiderlying portion of the muscle. 

 This is very slender, and is connected only in its origin with the 

 abdominal musculature. It is inserted on to the hyoid a 

 considerable distance behind the insertion of the larger half of 

 the muscle, and the insertions are not continuous. Just below this 

 muscle lies the pericardial muscle which I describe on another 

 page (see p. 684). It is interesting to note that the sternohyoid 

 is completely free from the shoulder-girdle, and is mei-ely a con- 

 tinuation of the rectus abdominis. 



The petrokyoidei are as in most other frogs ; i. e., there is an 

 anterior and a posterior petrohyoideus and the latter is divided 

 into three slips. The latter muscle is entirely inserted upon the 

 bony thyrohyals, and the three slips of which it is composed form 

 a continuous mass of muscles which are broad and leave no inter- 

 spaces. The last of the series, as in some other frogs, lies lather 

 superficially to the rest and is attached to tl e tip of the thyrohyal 

 bone ventrally. It also seems to pass beyond it as in Xenophrys *,. 

 and to be therefore associated with the vocal apparatus. 



* See Beddard, P. Z. S. 1907, p. 898, text-fig. 238, f.h. 3. 



