18 KANSAS UNIVERSITY QUARTERLY. 
Aulopora? anna, n. sp. 
Corallum prostrate, diffusely branched, branches interlacing, 
anastomosing at every contact, walls thin save at base of corallite, 
tubes very short, slightly sub-conical, immediate openings slightly 
flaring, circular to oval; no tabule distinguishable; septa occa- 
sionally represented by a faint ridge in best preserved corallites; 
diameter of calyx opening 2 mm., contiguous to one or two diame- 
ters distant. Corallites moderately low, larger at upper extremity 
than at base. 
This species is profusely branched baso-laterally and anasto- 
moses to such an extent as to often form solid mats of coral. 
It differs from Av/opfora in having no tabule, in which respect it 
agrees with C/adochonus, but it is prostrate, and does not reproduce 
by lateral gemmation as does the latter, hence it is referred 
provisionally to Awlopora. Carboniferous, Upper Coal Measures 
Morehead, Kansas. 
Aulopora prosseri, n. sp. 
Corallum large, prostrate, bifurcating, calyces rising vertically 
or obliquely from 3 to 7 mm.; average diameter 2 mm. or less, 
average diameter of prostrate position slightly less. Calyces not 
campanulate, cylindrical, openings nearly circular; corallites wrin- 
kled, weathered specimens show longitudinal stria indicating rudi- 
mentary septa; distance of corallites, 1 to 3 diameters; in lower 
portion the cavity is nearly closed by internal thickening of wall. 
Tabule very remote or wanting, depressed when present. 
Another specimen, apparently of this species, has a transverse 
weathered surface in which the corallites seem to be nearly ciosed 
by annular deposits within, there being merely a capillary opening 
in the center—a longititudinal section shows calyces 314 to 5 mm. 
deep, thin walled to near base, where the walls rapidly thicken. 
One corallite in the section measures 15 mm. in length. 
Carboniferous, Upper Coal Measures, Lyndon, Osage Co., 
Kansas. 
