64 MOLLUSCA FROM THE GREAT OOLITE. 
T. Testi conicd; anfractibus tribus levibus, lateribus planis; umbilico nullo; apertura 
depresso-ovata. 
Shell conical; whorls (3) smooth, the sides flattened, no umbilicus; aperture de- 
pressed, ovate. : 
Possibly this may be the young of 7. g/aber, Dunker; the only apparent difference 
between them bemg, that 7. odsoletus has a base wider in proportion to the height, and 
that the upper margins of the whorls are somewhat tumid, causing the sides to appear 
less flattened. 
Locality. It is moderately common to all the shelly beds near Minchinhampton. In 
the Stonesfield slate of Wagboro’ Bush (Buckman). 
Turso, Linneus, 1758. 
Shell thick, ventricose, turbmated, usually sculptured or tuberculated; spire short ; 
aperture usually rounded, entire, somewhat spread out anteriorly. 
Turso Hampronensis. Plate IX, figs. 30, 30a, 0. 
T. Testé parva, turbinatd; anfractibus (4) convexis, costulis (4) granulatis elatis cinctis; 
apertura orbiculatd; umbilico parvo. 
Shell small, turbinated ; whorls convex (4), turreted, encircled by four ribs, which are 
elevated and closely granulated ; the aperture is nearly round ; the umbilicus small. 
Locality. A single, good example from the planking of Minchinhampton Common is 
all we have seen. . 
Turso ELABoraTUS. Bean, ms. Plate IX, fig. 27. 
TurBOo ELABORATUS, Lycett. 1850. Annals of Nat. Hist., vol. vi, p. 416, pl. 11, fig. 1. 
T. Testa conoided; anfractibus (4A—5), superné planatis, inferne subconveais, et costatis ; 
costis magnis longitudinalibus numerosis et elatis, lineisque transversis decussatis; apertura 
ovata; umbilico nullo. ’ 
Shell conoidal; whorls (4—5), their upper borders flattened or nearly horizontal, 
smooth ; their lower portions slightly convex, with numerous elevated large, longitudinal 
costae, decussated by numerous, closely-arranged transverse lines; aperture oval; no 
umbilicus. 
Locality. he planking of Minchinhampton Common and white stone of Bussage 
have furnished this species, but it is rare at both localities; it has, likewise, been 
obtained from the middle division of the Inferior Oolite in the same district, and occurs 
also in the same formation im Normandy. 
