Mr. G. A. Boulenger on a new Batrachian. 521 



Fig. 8. A specimen of a glomerate Turbinarian, showing three periods of 

 growth. 



Plate XX. 



Fig. 1. A peculiar modification of a young cup exhibited by a specimen 

 in the National Collection, which appears to be the first stage 

 in the method of growth shown in the next figure. 



Fig. 2. A specimen remarkable for the regularity and symmetry of its 

 method of folding. For the letters see next figm-e. 



Fig. 2 a. Diagrammatic horizontal section, to explain the method of 

 folding. The letters mark the edges seen in the actual specimen. 

 c and d are secondary outgrowths somewhat obscuring the 

 original folding. 



Fig. 3. Three types of protuberant calicles, showing the principal 

 methods in which tlie coeuenchyma is raised by them. 



Fig. 4. Diagram to illustrate the principles of classifieation proposed as 

 regards the form of the calicle. a, the margin of the calicle ; 

 h, an imaginary half-radius circle ; 1, four septa which do not 

 reach the half-radius circle ; ^, a single septum reaching the 

 half-radius circle ; 3, septa crossing the half-radius circle. 

 Between the septa at 1 the interseptal loculi run over into the 

 furrows of the coenenchyma ; at 2 and 3 they are sharply 

 bounded peripherally, and show different shapes of interseptal 

 loculi. 



LXI. — Description of a neio Batrachian (Oreopliiyne Qiielcliii) 

 discovered hy Messrs. J. J. Quelch and F. McConned on the 

 Summit of Mount Roraima. By G. A. BOULENGEK, F.R.S. 



Oeeopheyne, gen. nov. {Engystomatid.) 



Pupil horizontal. Tongue elliptical, entire, and free behind. 

 Palate smooth. No tympanum ; eustachian tubes extremely 

 minute. Fingers and toes short, blunt, without distinct web ; 

 foot for grasping, the inner toe opposable and longer than 

 the second. Coracoids and prgecoracoids very strong, the 

 former forming an extensive suture with the latter in the 

 middle and enclosing on each side a rather small circular 

 foramen ; no omosternum ; sternum cartilaginous. Diapo- 

 physes of sacral vertebra strongly dilated. 



The genus Oreopkryne is nearest allied to Atelopus, D. & B., 

 from which it is, however, well distinguished by the stronger 

 ])rfecoracoids and tiie curious conformation of the loot, which 

 recalls that of the Hyloid genus Phyllomedusa. 



Oreophryne Quelchii. 



Physiognomy of Bufo [Phryniscus) nigricans., Wgm., or 

 Atelopus Stehneri, Wey. Snout short, rounded, not promi- 

 Arin. cC- Mag. N. Hist. Ser. 6. Vol xv. 36 



