ANCEY : ON HAWAIIAN MOLLUSCA. 119 



Animal maculis nigTis iiTogularibiis pictum. 



Long. 13-25, diam. 7-25, alt. apert. (obi.) 9-5, diam. ejusd. 6"25 mm. 



Hah. — Makawao, E. Maui (Baldwin). 



SrrcciNEA TETRAGONA, n.sp. PL VII, Fig. 4. 



Testa Slice, quadratee characteribus plurimis affinis, sed depressior, 

 magis oblonga, rirenti-cornea, apice pallido, ssepe albescente vel 

 decorticato. Anfractus iiltimus magis quadratus, subobliquns, 

 penultimus altior, sutura magis borizontalis, apertura superne magis 

 dilatata et rotundata, ampliata, baud flexuosa, supra subattenuata, vix 

 angulata, marginibus callo tenui sed distincto juuctis. 



Long. 12, lat. 7'25, alt. apert. 9-5, diam. ejusd. 6 5 mm. 



Sab. — Makawao, E. Maui (Baldwin). 



StICCINEA QUADRATA, n.Sp. PI. VII. Fig. 5. 



Testa tenuis, subpellucida, confertim et irregulariter rugoso-striata, 

 nifo-cornea, apice decorticato, rubello, oblongo-ovata. Spira mediocris, 

 summo obtuso, papillate, sat magno. Anfractus 2J valde convex!, 

 sutura obliqua profundeque impressa separati, celeriter accrescentes, 

 embryonali Isevi, sequentes flexuose et ruditer rugoso-striati, ultimus 

 magnus, subobliquus, ovato-oblongus. Apertura subobliqua, extus 

 flexuosa, margine extero ante medium distincte sinuato, basali paulum 

 recedente, oblonga, supra parum attenuata. Columella fere simplex 

 vel initio levissime incrassata et subpliciformis, cteterum longe arcuata. 



Long. 10-5, lat. 7, long, apert. 8, diam. ejusd. 5'5 mm. 



Hah. — Olaa, Kaiwiki, Hawaii (D. Thaanum, Professor Henshaw), 

 2,550 ped. supra mare. 



Ohs. — The living shell is often covered with mud, like the preceding 

 species. 



Microcystis rufobrunnea, n.sp. 



Testa globoso-conoidea, tenuis, nitidissima, rufo-brunnea vel cinna- 

 momea, interdum pallidior, imperforata, lineis incrementi perobsoletis. 

 Spira conoidea, obtusa, satis elevata. Anfractus 5-5^ convexi, regu- 

 lariter lenteque accrescentes, sutura appressa, lineari. Ultimus utrinque 

 convexus, turgidus, initio solum tantisper subangulatus, caeteruni 

 rotundatus, basi centro impressus, imperforatus. Apertura subobliqua, 

 lunata, semicircularis. Peristoma acutum, rectum, marginibus dis- 

 tantibus, columellari minute albo-incrassato, arcuato-declivi. 



Diam. maj. 7, min. 6*5, alt. 4*75, alt. apert. 3 mm. 



Hai. — Olaa, Hawaii (D. Thaanum). 



A fine-coloured shell, like M. Lymanniana, Anc, of Oahu, in that 

 respect, but smaller and otherwise quite distinct. 



Kaliella Thaanumi, n.sp. PI. VII, Fig. 6. 



Testa conico-pyramidalis, dilute cornea, fere imperforata, tenuissima, 

 pellucida, nitens, supra striis incrementi confertis sub valida lente 

 sculpta, infra lineis incisis spiralibus numerosis microscopice notata. 

 Spira depresse conoidea, rectilinearis, apice minuto, obtusulo, laevi. 



VOL. VI. — JUNE, 1904. 9 



