. Transactions and proceedings of the New Zealand Institute . ntice sulco marginali;segmento secundo cingulum efiiciente, utrinque quadratim secto, maiginereflexo, carinam elongatum linearem efficiente ; carinis reliquis in mediaaltitudine corporis sitis, crassiusculis, postice subangulatis, sed non pro-ductis; poris lateralibus; segmento prfe-anali apice in processum lamel-larem et obtusum producto ; metazonites sulco profundo transversalipartitis. Long., 18 mill.; larg., 2-5 mill. Hah. Auckland. Polydesmus (Icosidesmus) Jwchstetteri. Albidus, depressus, nitidus ; corpore antice et postice at
. Transactions and proceedings of the New Zealand Institute . ntice sulco marginali;segmento secundo cingulum efiiciente, utrinque quadratim secto, maiginereflexo, carinam elongatum linearem efficiente ; carinis reliquis in mediaaltitudine corporis sitis, crassiusculis, postice subangulatis, sed non pro-ductis; poris lateralibus; segmento prfe-anali apice in processum lamel-larem et obtusum producto ; metazonites sulco profundo transversalipartitis. Long., 18 mill.; larg., 2-5 mill. Hah. Auckland. Polydesmus (Icosidesmus) Jwchstetteri. Albidus, depressus, nitidus ; corpore antice et postice attenuato ; an-tennis gracilibus, elongatis, articulis 2° et 3° longioribus; primo segmentosemi-orbiculari, angulis rotundatis, segmentis 2-4 minutis, tertio minore ;metazonites transversis, utrinque rotundatis, margine postico crasso, carinisparum prominulis ; tuberis nullis; poris minimis, superis, marginalibus;segmento prfe-anali minuto, trigonali, lamina prae-anali trapizina. Long.,20 mill ; Jarg., 2-7 mill. Hab. Auckland. ,INSTITUTE, MY/^/APODA. HuTTON.—Contributions to the Conchology of New Zealand. 293 Explanation of Plate XI. Fig. 1. Himantidium ferrugineus .. a anterior extremity h posterior extremity 2. Himantidium morhosus 3. lulus antipodarum 4. Polydesmus gervaisii 5. Craspedosoma trisetosa 6. Sphoirotlierium leiosomus a anterior extremityh posterior extremity a profile of anterior endb extremity of antenna a profile of anterior endh profile of posterior end a anterior end from aboveh profile of anterior end a profile h head, nuchal plate and first segment from the frontc last two dorsal segments from behind. Aet. XL.—Contributions to the Conchology of New Zealand. By Prof. F. W. Hutton. [Read before the Otago Institute, Qth October, 1877.] lanthina iricolor, Eeeve ; Concli. Ic, fig. 23. Specimens liave been sent me from the North Island by Mr. T. Kirk. Trophon dubius, Hutton; Jour, de Concli., 1877. Ovato-fusiform, thick; whor
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