438 MR. E. A. SMITH ON NEW SHELLS FROM [June 16, 



5. Trochus (Bembix) abyssorum. (Plate XXXIV. fig. 5.) 

 Testa imperforata, turhinata, suhtenuis, sordide alhida, nitida ; 



anfract. — ?, convexi, liris spiralihus incequalibus (in penult. 7), 



lineis incrementi validis ohliquis confertis supra liras subno- 



dulosis cancellati, ultimus magnus, suhinflatus, liris circiter 20 



cinctus ; apertura magna leviter ohliqua, longitudinis totius 



■^ haud cequans, intus tenuiter sulcata, magaritacea ; labrum 



tetiue, anguste expansum ; columella obliqua, vix curvata, 



subrefiexa. 



Longit. 26 millim., diam. maj. 20 ; apertura 1 1 longa, 1 1 lata. 



Hah. Station 241. North Pacific, east of Japan, in 2300 fathoms. 



The single specimen consists of four whorls only. The apex 



appears to have been broken off rather abruptly. The oblique lines 



of growth are strongly developed, taking the form of raised lirae ; 



they cross the spiral ridges, which in consequence have a finely 



subgranose appearance. The interior of the aperture is thinly 



nacreous, and the sulci within correspond with the external lirae. 



6. CuspiDARiA (Myonera) lischkei. (Plate XXXIV. fig. 6) 

 Testa parva, tenuis, globosa, jjostice hreviter rostrata, cequivalvis, 



concentrice tenuiter striata, striis supra rostrum paulo validio- 

 ribus ; margo dorsi anticus leviter convexus, posticus declivis, 

 incurvatus, ventralis late curvatus, prope rostrum levissime 

 ginuatus ; latus anticum magnum, curvatum, posticum anqus- 

 tatum, rostratum, ad e.vtremitatem breviter truncatum, carina 

 obsoleta ab umbone radiante instructum ; umbones parvi, siibcen- 

 trales; linea cardinis edentula tenuis, in valva sinistra pone 

 umbonem leviter incrassatum ; ligamentum parvum. 

 Longit. 8 millim., alt. 5|, diam. 4. 

 Hab. Station 237. South of Japan, in 1875 fathoms. 

 This species is remarkable for the obtuseness of the anterior 

 outline. It somewhat resembles C. teres, Jeffreys, but is more 

 obtuse in front, and also differs in sculpture and the hinge- 

 characters. 



(^Descriptions of new Species o/ Shells /ram Station 164 B.) 



7. Pleurotoma (Drillia) challengeri. (Plate XXXIV. 

 fig. 7.) 



Testa parva, alba, angusta, breviter fusiformis ; anfractus 7, duo 

 supremi (nucleus) Iceves, convexi, cceteri superne excavati, infra 

 leviter convexi, costis tenuibus (in anfr. penult, circiter 16) et 

 liris spiralibus minus conspicuis (infra suturam quoque ad 

 angulum supra castas tuberculatis) instructi ; anfr. ultimus 

 elongatus, costis inferne sensim obsoletis; apertura angusta, 

 longit. totius | luirul cequans ; labrum tenue, in concavitate haud 

 profunda sinuatum. 



Longit. 12 millim., diam. 4 ; apertura 5| longa, 2 lata. 



This species has a large apex, a shallow labral sinus, and the 

 whorls with a double coronation around the upper part. 



