210 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



sulcatis, instructi; ultimus -§• longit. testae aequans ; apertura ovata ; 

 labrum simplex, acuturn ; columella ad basim leviter arcuata, in medio 

 plica unica parva obliqua niunita. Long. 4, diam. 1 mm. 



This little shell is allied to the Australian Odostomia pupa/omits, 

 Souverbie (= Parthenia Kreffti, Angas), but it is much more slender in 

 form and has thinner and closer ribs. 



8. Elusa livida, n.sp. PI. XXII, Fig. 8. 



Testa elongato-chrysalidiforinis, crassa, livida, nitens ; anfractus 7, 

 primus minutus, laevis, leviter contortus, caeteri planato convexi, costis 

 numerosis (circ. 24) rotundatis rectiusculis instructi, sutura impressa 

 sejuncti ; anfractus ultimus -\ longitudinis testa? aequans, ad basim vix 

 atteuuatus, rotundatus, lateribus rectiusculis, planulatis ; apertura 

 parva, leviter sinistrorsum obliqua ; columella crassa, uniplicata, valde 

 sinistrorsum contorta. Long. 3 - 5, diam. 1 mm. 



A little shining dark plum-coloured shell, with numerous longi- 

 tudinal ribs and no spiral sculpture. 



9. Elusa crassicostata, n.sp. PI. XXII, Fig. 9. 



Testa elongata. gracilis, albo-nitens, anguste rirnata ; spira elongata, 

 lateribus convexiusculis ; anfractus 13, convexi, sutura profunda 

 sejuncti, costis robustis confertiusculis (circ. 18) instructi; anfractus 

 ultimus breviculus, i longitudinis testa? aequans, costis evanidis ; 

 apertura subovata, antice latiuscula, rotundata, postice acuta, 

 angustior ; labrum simplex, acutum ; columella crassiuscula, contorta, 

 plica unica parum obliqua crassiuscula munita, inferne crassiuscula, 

 leviter reflexa, superne tenuiter callosa. Long. 7, diam. 1*5 mm. 



An elongated shining white shell, with thick longitudinal ribs and 

 a deeply impressed suture. A prominent, slightly oblique plait is 

 conspicuous on the twisted and reflexed columella, about the middle 

 of the aperture. 



10. Scala htjmeeosa, n.sp. PI. XXII, Fig. 10. 



Testa ovato-pyramidalis, tenuis, alba, mediocriter umbilicata ; spira 

 elato-conica ; anfractus 8, convexi, rotundati, costis (circ. 22) acuti- 

 usculis supra angulatis instructi, sutura profunda disjuncti; anfractus 

 ultimus latiusculus, \ longitudinis testae aequans ; apertura circularis ; 

 peristoma mediocriter incrassatum. Long. 14, diam. 8 mm. 



A white shell, with numerous thin ribs. The angularity of the 

 whorls near the suture gives it a shouldered appearance. 



11. Trifoeis picturatus, n.sp. PI. XXII, Fig. 11. 



Testa sinistrorsa, elongata, gracilis, albida, nigro-fusco maculata, ad 

 apicem fusca; anfr. 18, planati, vix concavi, liris tribus acutiusculis 

 cincti, inferne angulati, ad angulum pustulati, pustulis albidis fusco 

 interpunctatis ; anfractus ultimus breviculus, biangulatus, ad basim 

 vix concavus, rostro fusco oblique dextrorsus rerlexo instructus ; 

 apertura parva, subquadrata; labrum tenue, serratum. Long. 9, 

 diam. 2 - 5 mm. 



A pretty species, neatly sculptured and noduled, streaked and 

 spotted with blackish brown ; with a brown tubular rostrum placed 

 obliquely away from the aperture, on the right hand side of the shell. 



