Agelacrinidae and Lepadocystinae 
451 
37. Streptaster reversata, sp. nov. 
{ Plate IV, Fig. 3) 
A single specimen of Streptaster was found 2 miles west of Alil- 
lion, in Madison County, Kentucky, west of trestle No. 51, in strata 
regarded as Middle Eden. Alillion is a railroad station, about 
5 mkes northwest of Richmond. About a mile southeast of 
Million, where the pike to Richmond crosses the railroad, is the 
home of George Million, and directly northeast of the house, along 
the railroad, is exposed the upper part of the richly fossiliferous 
Eden, directly below the poorly fossiliferous, massive, very fine 
grained Paint Lick or Garrard sandstone. Here the upper part of 
the richly fossiliferous Eden contains Strophomena halite, Platy- 
strophia ponderosa, Fusispira'terehriformis, Amplexopora septosa, 
Constellaria prominens, Dekayella ulrichi, Escharopora falciformis, 
Hemiphragma sp., Heterotrypa sp., and Perenopora vera. West- 
ward, along the railroad, as far as Million, a similar fauna occurs, 
giving place gradually to lower horizons in the Eden, on approach- 
ing the Tunnel, 1 mile northwest of Million. An eighth of a 
mile west of the Tunnel, at the home of Marion Newby, the lower 
part of the Paint Lick or Garrard sandstone is exposed far above 
the railroad level, while the lower parts of the Eden are seen near 
the track. A short distance west of this locality, Strophotnena 
millionensis is found with an occasional specimen of Trinucleus 
concentricus. Callopora sigillarioides, C. communis, and Erido- 
trypa hriareus, associated with Cyclonetna and Hebertella, occur in 
the vicinity of Whitlock station; and, at bridge 51, a tenth of a 
mile west of the station, a small Platystrophia also is found. West 
of bridge 51, the Streptaster occurred, associated with Callopora 
communis and Eridotrypa hriareus. The rock does not resemble 
the Greendale member of the Cynthiana formation until farther 
westward, so that the horizons exposed at the Streptaster locality 
may include both the Eden and the Rogers Gap member of the 
Cynthiana. The margin of the Streptaster rests upon a Ceramo- 
porella, from which its Eden age was assumed. This identification 
of the horizon may require revision. 
Anal interambulacral area quite well exposed. Left posterior 
ray about 14 mm. in length, of which the terminal part, for a dis- 
tance of 4 mm., is parallel to the border. The right posterior ray 
is about 17 mm. in length. About 9 mm. from the proximal end. 
