OF FROGS OF THE GENUS BUEVIOEPS. 



411 



with text-fig. 4 of my previous paper upon this genus, not only 

 shows the differences in the oblique muscles already referred to, 

 but indicates the nearly total absence of anything comparable to 

 those structures which I identified in my former paper with very 

 much enlarged lymph hearts. There is, indeed, a slight bulge of the 

 abdominal wall posteriorly, but it does not extend over the doivsal 

 surface of the thigh ; nor is this bulging at all detached from the 



Text-fi2'. 133. 



Int. Obi. 



Copy of a drawing by Mr. R. H. Burne, illustrative of certain parts in the 

 anatomj' of JBreviceps sp. referred to in the text. 



J31. Body-cavity. Cm. Cutaneous muscle. Int.Obl. Obliquus internus. i. Lung 

 Py. Pyriformis. S. Diverticulum of bod^'-cavity overlying thigh. 



The muscles of the thigh are indicated hy dotted lines. 



abdominal wall. It will be easily seen from an inspection of text- 

 figure 132 that an extension of the body- cavity on to the dorsal 

 surface of the thigh is impossible in the present species. For, 

 as will be seen in the last figui^e referred to, a ridge of cutaneous 

 muscle ties the commencement of the thigh to the skin and thus 



