Solenastrea verhelsti If. Ed. & H. var* fide Duncan 
1863. Solenastraea verhelsti , Duncan, Quart, Jour, Geol. Soc, 
London, VoX, XX, p. 40. 
1867, Solenastraea verhelsti , Duncan, Quart. Jour. Geol. Soc. 
London, VoX. XXIV, p. 25. 
Duncan makes the following remarks! 
"Corallum massive, short, flat, with a plane surface. 
Calices circular, close, almost equal in size, Wall very thin. 
Septa in three cycles and unequal in size; the primary are the 
largest, and the secondary, which are a little smaller, extend to 
the rudimentary columella, whilst the tertiary are small and 
reach but a little way inwards. All are sharply granular or 
subspinous laterally, and the free inner edges of the third order 
are bluntly but regularly dentate. Costae rudimentary, attached 
to each septum, rounded and blunt. Exothecal cells large, and 
about l/20 inch in longitudinal measurement* Endotheeal dissepi- 
