nuculidjE. 13 L 



simply, and very sharply acuminated, the tip subcentral, rather 

 below than above, the middle. Front dorsal slope short, rather 

 slight, plano-convex : hinder dorsal slope produced, moderate, 

 straightish. Ventral margin more or less arcuated in front, rising 

 with less convexity and without terminal indentation behind. No 

 defined dorsal area in front : hinder one large, angularly defined, 

 plicately wrinkled at the circumference, sinoothish in the middle. 

 — -A single specimen, without known locality, is present in Mr. 

 Taylor's fine collection. The form reminds one of Conrad's eborea, 

 but the sculpture differs. The ribs on the posterior ridge form 

 obtuse angles with the concentric ones. 



45. L. commotata, Philippi, f. 80, 81. — T. perparva, ovato- 

 acuta (ssepe angustior), postice repente acuminato-subrostrata, 

 subsequilateralis, albida, undique dense et concentrice lirata, porca 

 antica radiata. Margo dorsalis antice leniter declivis ; postice vix 

 subretusus ; ventralis arcuatus, utrinque multum acclivis. vVrea 

 magna, ovali-lanceolata ; inferne concaviuscula, longitudinaliter 

 crenata. Lunula minima, inconspicua. — Small, peaked-ovate 

 (often a little elongated), subventricose, whitish, with a radiating 

 fold near the front extremity, closely and concentrically lyrated 

 throughout; the interstitial sulci broader and unsculptured. Ex- 

 tremity of the slightly shorter anterior side contracted and rounded. 

 Posterior side rapidly acuminated ; the sharp subrostrated tip 

 nearly subcentral. Front dorsal slope very moderate, convex or 

 plano-convex ; hinder dorsal slope straightish or subretuse. Ven- 

 tral margin arched, much rising at both ends, straighter behind, 

 scarcely, if at all, refuse before the obsolete or planulate uinbonal 

 ridge. Escutcheon large, oval-lanceolate, near its subcrenatcd keel- 

 like limits more concave and longitudinally crenated. Lunule 

 more or less conspicuous, very small, merely wrinkled.* — This tiny- 

 species was apparently comprehended by Chemnitz in his Area 



fragilis (Conch. Cab. vii. p. 199), but his figure (f. 546) repre- 

 sents a much larger shell. 



46. L. reticulata, Hinds, f. 103. — T. minima, ventricosa, 

 ovato-acuta, postice acuminata vixque recurvata, sequilateralis, 



* I am unable to recognize a shell said by Philippi to closely resemble his commu- 

 tata, but to be devoid of the radiating fold, and to be nearly smooth in the middle 

 and front. — 



L. analis (Nucnla, a, Philippi, Zeitsch. Malak. l$5\,p. 87>- — "T. orato-oblonga, 

 gibba, antice rotuudata, postice in rostrum acutum elongatum adscendentem products, 

 Iransversim sulcata ; carina lamellosfi aream cingente; carina radiante in media area; 

 serie puuctoruin inipressorum, utrinque luuulaul oruantc. carina latcris antici omniuo 

 obsoleta. A. China." 



