boettger: land shells from new guinea. 119 



3. Hemiplecta sericea, n.sp. PI. Ill, Figs. 6-8. 



Testa anguste umbilicata, solida, cai'inatula, sericea, costulis 

 angustis et striis spiralibus angustissimis minutissime cancellata, 

 supra brimnea, ad carinani linea flavescente supra non definita, infra 

 sub carina nigrescente brunnea, basira versus in colorem olivaceo- 

 brunneum clarescente. Aufractus 5J, convexiiisculi, regtilariter 

 accrescentes, sutura subplana, antice prof andiore, separati ; ultimus 

 non descendens. Apertura ovata, obtusissiiue angulata, obliqua, 

 intus albida, colore et pictura externa translucentibus ; peristoma 

 simplex, subacutum, basi incrassatum, marginibus callo tenuissimo 

 junctis. Alt. 16A, diaui. niaj. 29i, min. 24^ mm.; apertura, alt. 12, 

 lat. 15 ram. 



Mab. — Sattelberg, near Finschhafen, German New Guinea. 



Shell narrowly umbilicate, solid, very faintly keeled, with a silky 

 lustre, cancellated by fine riblets and verj- fine spiral lines, 

 brown above, with a yellowish band on the keel, which is not well 

 defined above, blackish-brown under the keel, becoming by and by 

 olive-brown towards the base. Whorls o+, moderately convex, 

 regularly increasing in size, separated by an almost flat suture, 

 becoming deeper towards the aperture; the last whorl not descending 

 in front. Aperture ovate, obtusely angulated, oblique, whitish 

 within, displaying the external colour and painting; peristome simple, 

 almost acute, incrassated at the base, the margins united by a very 

 thin callus. 



4. Coliolus stahlbeegi, n.sp. PI. Ill, Fig. 9. 



Testa rimata, turrita, distinctissime carinata, luride albida, ad 

 carinam linea fusco-purpurascente ornata ; apex albidus, nitens. 

 Anfractus 6, superiores inflati, sequentes plani, regulariter accrescentes, 

 sutura plana separati ; ultimus non descendens. Apertura angulato- 

 ovata, subobliqua, intus colore et pictura externa translucentibus; 

 peristoma reflexum. Alt. 15J, diam. raaj. 15, min. 13 mm.; apertura, 

 alt. 7, lat. 8 mm. 



Hah. — Sattelberg, near Finschhafen, German New Guinea. 



Shell rimate, turreted, very sharply keeled, dirty whitish, at the 

 keel ornamented with a purplish -brown band ; apex whitish, shining. 

 Whorls 6, upper whorls inflated, the others flat, regularly increasing 

 in size, separated by a flat suture ; the last whorl not descending in 

 front. Aperture angulate-ovate, little oblique, displaying the external 

 colour and painting ; peristome reflexed. 



EXPLANATION OF PLATE III. 



Figs. 1-2. Helicarion novaguinecs, n.sp. 



,, 3-5. Hemiplecta papuana, n.sp. 



,, 6-8. H. sericea, n.sp. 



,, 9. Coliolus stahlbergi, n.sp. 



