AMAUKOPSIS ABEIHEXSIS. 17 



and curved, posteriorly triangulate ; outer lip simple ; columella excavated, 

 showing a chink-like umbilical opening. 



This species is described from a single specimen of the following dimen- 

 sions : length (nearly entire), 3D mm. ; greatest width, 28 mm.; length of 

 body-whorl slightly shortened, 21mm.; length of spire, 18 mm. Coll. Bird. 



Locality and Position. — Aheih ; from the arenaceous portion of the Tnro- 

 nian Marl. 



Amauropsis Abeihensis, sp. nov. 



Plate I. figs. 2 a, b. 



Testa subghbosa ; spira brevis, acuminata: anfractus sex, subconvexi, sutura 

 angusta excavata sejuncti; vtMmus valde infiatus, ml medium latissimus, latior quam 

 longior ; superficies striis incrementi craw notata : apcrtura ohorata, itilalata, postice 

 angustata, antice lata ac rolundata; /allium tenue ; columella rimata el ait termina- 

 tionem furcata. 



Shell snbglobose ; spire short, acuminate : whorls six, subconvex, sepa- 

 rated by a narrow bnt excavated suture ; the last whorl greatly inflated, 

 widest at the middle, broader than long ; surface coarsely marked with striae 

 of growth : aperture obovate, expanded, narrowed behind, in front wide and 

 rounded; inner lip thin; columella fissured, and at the end forked. 



Single specimen. Length, 24 mm.; length of last whorl, 18 mm.; width. 

 20 mm. 



Like En spirit pagoda Forbes, 1846 (Trans. Geol. Soc. Lond., VII, p. 136, 

 PI. xii, fig. 14), this specimen has the posterior edge of its volutions rounded 

 and descending into a narrow canaliculate suture. The spire is less elevated 

 than in pagoda, and the last whorl is relatively much larger. The shell most 

 resembles E. spissata Stoliczka (Cretac. Gast. of So. India, p. 303, PI. xxii, figs. 

 3, 4), the body-whorl of which, however, has the surface punctate, is more 

 gradate, being flattened behind and upon the sides near the suture, and is less 

 ventricose. Abeihensis and spissata agree in proportions of spire and form of 

 aperture, and both have the columella anteriorly flattened and distinctly 

 grooved; but in spissata it is not fissured, while in the present species the 

 groove ends behind in a chink-like umbilicus. K. lira/a Sow. (also Creta- 

 ceous) differs from both the last mentioned species in having a deep and 

 conspicuous umbilicus, as well as in other respects. 



More nearly than A. subcanaliculata and gradata, the present species corre- 

 sponds to the recent typical Amauropsis in the character of its suture and 



