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



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

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



{infract. — ?, convexi, Uris spiralibus incequalibus (in penult. 7), 



lineis incrementi validis ohliquis confertis supra liras subno- 



dulosis cancellati, ultimus magnus, subinflatus, Uris circiter 20 



cinctus ; apertura magna leviter obliqua, longitudinis totius 



^ haud cequans, intus tenuiter sulcata^ magaritacea ; labrum 



tenue, anguste expansum ; columella obliqua, vix curvata, 



subrejlexa. 



ZiOngit. 26 millivi., diam. maj. 20 ; apertura 1 1 longa, 1 1 lata. 



Sab. 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 ahruptly. The oblique lines 



of growth are strongly developed, taking the j'orm of raised lirse ; 



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 lirse. 



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

 Testa parva, tenuis, globosa, p>ostice breviter rostrata, cpquivalvis, 



concentrice tenuiter striata, striis supra rostruin paulo validio- 

 ribus ; margo dorsi anticus leviter convexus, posticus decUvis, 

 incurvatus, ventralis late curvatus, prope rostrum, levissime 

 sinuatus ; latus anticum magnum, curvatuni, posticum angus- 

 tatwn, rostratum, ad extremitatem breviter truncutum, carina 

 obsoleta ah umbone radiante instructum ; umbones parvi, subcen- 

 trales ; linea cardinis edentula tenuis, in valva sinistra pone 

 umbonem leviter incrassatum ; ligamentum parvum. 

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

 Hah. 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 scvilpture and the hinge- 

 characters. 



(Descriptions of new Species of Shells frotn Station 164 B.) 



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

 fig. 7.) 



Testa parva, alba, angusta, breviter fusiformis ; anfr actus 7, duo 

 supremi (nucleus) Iceves, convexi, ccetei'i superne excavati, infra 

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

 Uris spiralibus minus conspicuis (infra suturam quoque ad 

 unguium supra costas tubercidatis) instructi; anfr. ultimus 

 elongatus, costis inferne sensim obsoletis ; apertura angusta, 

 longit. totius g Jiaud cequans ; labriim tenue, in concavitate haud 

 profunde 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. 



