908 



MR. F, E. BEDDARD ON THE ANATOMY 



[Dec. 15,, 



lateral foramina as well as the median notch nearly converted into 

 a foramen in these genera (and, it may be added, in Megalophrys *). 

 I take it that in Hemisus the single median foramen embi'aces 



Text-fio-. 179. 



7v. 



A. Ventral surface of hyoid of Hemisus guttatum parti}' cleared of muscle (the ■ 



geniohyoids are removed and the hyoglossus cut thvougli twice and the middle 

 part removed). 



c. The anterior cornu of one side, c . The posterior cornu in which the absence of 

 dotting indicates bone. li. Thin portion of anterior cornua, which meet in the 

 middle line to form a ventral and backwardly projecting sheet of cartilage, with 

 a rounded posterior margin which partly covers the hj'oglossus (divided just 

 behind the edge of this cartilage). k.g. Posterior region of hyogiossus. 

 p.h. Sternohj'oideus posterior ; the anterior petrohyoideus is seen anteriorlj' to 

 be inserted on to the body ot the hyoid, where it nearly meets its fellow in the 

 middle line ; above this is seen the insertion of the anterior of the sterno- 

 hyoids. 



B. Section through body of hj'oid in a longitudinal direction. 



these lateral foiamina as well as the median notch, since it is- 

 bomided laterally, not only by the roots of the anterior cornua, 



* Beddard, " On Pelobatidaj," P. Z. S. 1907, p. 895, text-fig. 237. 



