54 



Group III. THE HYALINE. 



i. — Rays moniliform 



2. — Rays not moniliform ( i 



3. — Rays showing an Interruption after the se< ond or third double 

 bead irom the margin. Beads from eight to ten in 

 number 



4. — Rays continuous, without interruption (7). 



\rca quadrangular. About twent) rows o! granules to ea< li 

 long side ol area. Gran lies small or medium size. 



( '. Hardmanianus % Grev in Int. 



6. — Area oval, with about forty rows of large, 1 oarse granules to 

 each long side of oval, em ircling a central, oval, blank 

 space. iaemelianuSy* Grun. 



7. Rays short, tapering. Area ^ery large, circular. Beads on 



rays small and delicate. Inter-Radials with three mar- 

 ginal beads. Length ot rays 0030 m.m. 



( \. dt Tonianus t \ I )eby. 



8.- — Rays long. Area central ov.il. Beads in the rays ver) con- 

 spicuous (9). 



9. — All Rays reach the area. C. Robcrtsianus y Grev. 



10. — Alternate Rays only reach the area, intermediate Rays 

 shortened. C. diplostictus y Norm. 



1 1. — Rays infundibuliform I 13;. 



* I ani rather inclined t<» consider < '. daemelianus^ Grun., ami ('. Hard- 

 manianus, Grev., as mere varieties "i one species. I own the last named sp. 

 from Hong Runt;, and have seen it from Derbend in Mr. Grove's collection. 



. bis species occurs in the Mauritius and at Tamatave. I have it from 



Mi. Doeg's and have >een it in Mi. Grove's collections. 



