Tlic Upper Palaeozoic Fossils of Missouri. — -Rozcley. 347 
list, 1 89 1, number of the Kansas City Scientist, and G". stella 
in the February, 1900, number of the A:merican Geologist, 
We propose for this group the generic name Carpenterc- 
hlastus, as a sHght tribute to our friend the late Dr. P. Herbert 
Carpenter, of Eton College, England, and take for the type 
species Granatocrinus luagnibasis. The distinguishing charac- 
ters of the new genus are sunken ventral surface ; narrow, ele- 
vated ambulacra; broad, convex basal disk; coarse, cord-like 
ornamentation, and usually distorted appearance ; rather small 
deltoids, eight small rounded spiracles (two more are probably 
confluent with the anal opening-), and a small anal opening. 
None but the young of C. iiiagjiibasis have symmetrical shapes, 
while most of the specimens of C. stella are similarly and singu- 
larly misshapen, the only one preserving the test, however, is 
quite regular in outline. C. stella differs much from the other 
species in the free ends of the ambulacra and consequent great 
prominence of the base. The new species is represented by a 
single specimen and that is in a crushed condition. It will be 
known as, 
Carpenteroblastus pentagonus, n. sp. 
Plate xxyiii. 
Figs. 26 and 27. — Side and ventral views of the type speeimen. 
This little blastoid is about 6 mm. long by 514 mm. broad: has 
small deltoids, long fork pieces "and a flat, not large base ; the ventral 
side is concave. The spiracles are small, round and the anal opening 
is inconspicuous. The ambulacra are narrow and convex beyond the 
radial edges. The intcrambulacral areas are flat. The ornamentation 
is hardly noticeable on the type specimen. 
This rare bastoid comes from the same horizon as Loplw- 
blastus aplatus and L. iiiargirviiliis (top of the fifth division of 
the Lower Burlington limestone) at Louisiana. Mo. 
The species of this genus at present known are. 
Carpenteroblastus inagnibasis, base of L^pper Ihirlington 
limestone. 
Carpenteroblastus pirifonuis, L'pper Burlington lime- 
stone. 
Carpenteroblastus stella, base of UpjxM" Burlington lime- 
stone. 
Carpenteroblastus f^eutagonus, top of fifth division Lower 
Burlington limestone. 
