VOL. XVI.(2) | INFERIOR-OOLITE ECHINOIDS 183 
The height of this variety is about .6 of its diameter; 
but there are forms intermediate between it and the 
typical Holectypus depressus, in which the height is .5 of 
the diameter. 
It has been found in the Rubbly Beds at Doulting- 
Bridge Quarry, Doulting (L.R.) 
PYGASTER SEMISULCATUS (Phillips), var. CONOI- 
DEUS, Wright. 
This rare form of Pygaster semisulcatus was called by 
Wright, Pygaster conoideus. He records it from the 
Pea-Grit of Crickley Hill, and from the lower beds of the 
Inferior Oolite near Stroud. Ina specimen obtained by 
Mr Richardson from the Pea-Grit of Cooper’s Hill, near 
Gloucester, the ratio @@- = “ae = -614. 
ameter 52 mm. 
STOMECHINUS INTERMEDIUS (Agassiz), var. GER- 
MINANS, Wright. 
This is Wright’s Stomechinus germinans. As it ex- 
hibits no difference from Stomechznus intermedius, except 
in the matter of height, I have united it with that species 
in the manner shown above. It occurs in beds of Mzur- 
chisone and post-Garantzane date, as in the case of 
the typical Stomechznus intermedius. 
In the Cotteswolds it has been found in beds of 
Murchisone date at Crickley Hill, Leckhampton Hill, 
Birdlip, Nailsworth, Randwick, and Selsley Hill. It has 
also been obtained from beds of post-Garantiane date at 
Dundry Hill, near Bristol. 
The height of this variety is nearly .75 of its diameter. 
