74 



adultae 58 mill. longae sunt earumque dimenslonis ratio 

 numeris 100, 64, 42 respondet. 



26. Terebra Lischkeana Dkr. 

 Plura specimina exstant congruentia. Testa acuta 

 subulata, fascia alba supera, fusca vel coerulescente 

 infera quasi bipartita, aufractibus 17—18 modice con- 

 vexis, sutura distincta separatis, locgitudine costatis in- 

 structa; costae laeves; intervalla traiisversim denseque 

 striata; sulcus infra suturain exilis, in costarum inter- 

 stitiis punctulis pertusus; apertura oblonga; columella 

 subrecta fusca; canalis brevis; apex purpureo fuscus 

 nitidus. — Specimina maxima plane adulta 35 mill. 

 longa sunt. 



27. Terebra Loebbeckeana Dkr. 

 Testa gracilis, longa, alba, fascia pallide fusca lata 

 interrupta cincta, anfi-actibus circa 30 sutura distincta 

 divisis, parum convexis^ oblique costulatis transversimque 

 striatis, subgranosis, superne sulco divisis instructa ; aper- 

 tura angusta; columella parum contorta; canalis sub- 

 curvus. — Alt. 75, lat. vix 10 mill. 



28. Trigonella Crossei Dkr. 

 Testa ovato-trigona, compressiuscula, inaequilatera, 

 concentrice tenerrimeque striata, marginem versus ven- 

 tris sulcata, fusco cinereove violacea vel albida, rarius 

 striga lata fusca ab umbonibus ad latus posticum de- 

 currente signata; umbones uitidissimi atro -violacei vel 

 purpurascentes ; lunula areaque lanceolatae, distincte de- 

 terminatae, concinne sulcatae; sinus pallii breviculus 

 haud plane perspicuus; color internus plerumque viola- 

 ceo-fuscus. — Long. 27 mill. 



29. Umbonium Adamsi Dkr. 

 Testa depresso-conoidea, nitida, glabra, sub vitro 

 tantum tenerrime striata, albida, lineis confertis undu- 

 J^tis atro-fuscis picta, anfractibus plano-convexis ultimo 



