GAZ. — GRA.] 



ECHINODERMA TA. 



679 



"Gazacrinus, S. A. Miller, 1892, Adv. Sheets 

 18th Rep. Geo. Sur. Ind., p. 49. [Ety. 



gaza, treas- 

 ury; krinon, 

 lily.] Calyx 

 obconoidal; 

 basals 5, 

 one trun- 

 cated b y 

 the azygous 

 plate ; pri- 

 mary ra- 

 dials, 3x5; 

 secondary 

 arms composed of a 

 flattened plates, one 



Fig. 1232. 



Fig. 1233.— Gazacrinus inor- 

 natus. 



-Gazacrinus inor- 

 natus. 



radials 2 x 10 ; 

 single series of 

 plate in each 

 radial area; 

 vault sus- 

 tained by a 

 specialized 

 frame - work, 

 witb ambu- 

 lacral canals 

 connecting the arms with a central 

 orifice. Type Gazacrinus inornatus. 

 Described at the same place, from the 

 Niagara Gr. 



Glyptaster lockportensis, Ringueberg, 1890, 

 Ann. N. Y. Acad. Sci., vol. 5, p. 304, 

 Niagara Gr. 



Goniasteroidocrinus tuberosus is from the 

 Keokuk Gr. It is re-defined in the Ad- 

 vance Sheets 17th Rep. Geo. Sur. Ind., 

 p. 51, and several errors respecting it 

 are corrected. 



Goniocrinus, Miller & Gurley, 1890, Desc. 

 New Gen. and Spec. Echinodermata, 

 p. 32, and 16th Rep. Geo. Sur. Ind., p. 

 351. [Ety. gonia, an angle ; krinon, a 

 lily.] Calyx small, basin-shaped ; plates 

 convex or angular. Basals 5, small, ex- 

 tending beyond the column. Sub- 



Fig. 1234.— Goniasteroidocrinus tuberosus. Show- 

 ing the pendulous arms. 



radials five, about the same size as the 

 basals; first radials larger, wider than 

 long, and supporting on the slightly 

 concave upper faces, a little shorter 



Fig. 1235.— Goniocrinus sculp- 

 tilis. Natural size and mag- 

 nified. 



than the width of the plates, the brach- 

 ials ; brachials 3 in each ray, flanged 

 at the sides ; arms resembling Scaph- 

 iocrinus ; no 

 regular in- 

 terradials; 

 azygous in- 

 terradials. 

 consisting of 

 a series of 

 plates, the 

 first one like 

 a first radial, 

 and resting 

 upon the up- 

 per trun- 

 cated face of 

 a subradial, 

 which is 

 followed by 

 plates very 

 much like 

 the brach- 

 ials, which 



form a convex, arm-like appendage that 

 curves in toward the proboscis at or 

 above the base 

 of the free 

 arms. A small 

 azygous plate 

 also exists on 

 the right side 

 of the area 

 resting be- 

 tween the up- 

 per sloping 

 sides of two 

 subradial s and 

 the under slop- 

 ing side of a 

 first radial, and 

 the azygous 

 plate which 

 truncates a 

 subradial. Col- 

 umn pentag- 

 Fig. 1236.— Goniocrinus sculp- onal, bearing 

 tills. Left side view and azy- c i r r h i, and 

 gous side. Both magnified a composed of 

 little. ,,. , r 



thicker and 



thinner plates ; canal pentagonal. Type 

 G. sculptilis, which is described at the 

 same place, from the Waverly or Kin- 

 derhook Gr. 



Granatocrinus aplatus. G. concinnulus, G. 

 excavatus, G. exiguus, G. pyriformis, 

 Rowley & Hare, 1891, Kansas City 

 Scientist, vol. 5, pp. 99, 100, 117, 118, 

 Burlington Gr. 



Graphiocrinus must be restored, as de- 

 scribed by De Koninck & Lehon, and 

 the redefinition of Wachsmuth & 

 Springer wholly set aside. The generic 

 formula is as follows: Basals 5; radials 

 2x5; anal 1; arms 10; none bifurcate. 

 There is not a shadow of reason or 

 evidence for supposing De Koninck and 

 Lehon were mistaken in their diag- 

 nosis. 



