Hi 
rilE SCIENTIST 
A Description of a New Spocies 
Eeliliiodcnimta From the Upper 
Coal Measuros of Kansas 
City. 
of 
VjY E. Butts. 
Aes locr inus If/kiiifii, n. sp. 
This species has a piiraboliforiii calyx; 
surface of plates smooth; sutures not in- 
dented ; coUuun decno-onal with curved 
intersections; basals five in number and 
of hexagonal form ; they are consideably 
lirst radials is ^rejiler than it \< :\t the in- 
termediate angle, wnich. witl) tlie width 
of the subradials is the cause of the pyra- 
midial form of the calyx. 
There is one nzyo-ous plafe i-esting hr- 
tween two of the flrst radials and on top 
of the heptiigonial subradial, which is 
quadrangular, the upi)(3r side of this 
plate being slightly longer than the 
lower. 
The probosis, tentacles and cilia are the 
same as A. magniUcus, from which spe- 
calyx" 
bent up and measure from tip to tip 
about four times the diameter of the 
column. 
The subradials are comparatively 
large, having somewhat more width 
than heighth, four of them are hexagonal 
and one heptagon al ; these are very 
slightly curved, appearing nearly tan- 
gential to the basals. The upper sides 
are about one-third longer than the lower 
sides, and about five times the length of 
the end. 
The first radials are considerably larger 
than the subradials, and all are penta- 
gonal ; the distance across the top of the 
sies it may be distinguished by having 
no vertical plates in the calyx, also tiie 
great width of the subradials, and also 
the basals being much longer and curved 
upwards; these are likewise its variance 
with any other known species of this 
genus. 
It was found in the upper coal meas- 
ures at the corner of Tenth street and Bal- 
timore avenue in Kansas City, Mo. in the 
Blue Shale known as Rock No. 97. 
This species is here first described and 
is named in honor of one of our earliest 
local workers in Palalontology, Mr. W. 
H. K Lykins. 
