Descriptions of New Species of Achatinella. 143 



suture well marked ; aperture ovate ; lip thin ; columella short, 

 abruptly terminating in a large prominent plait ; color of epi- 

 dermis yellowish white, alternating with longitudinal chestnut 

 lines ; base of an umber color, with a revolving line of the 

 same colour above. 



This species does not make a near approach to any previously 

 described, and is so strikingly characteristic that the description 

 is given from the only specimen ever obtained. 



2. Achat inclla hsimilis. 



A. testa elongata, conica, longitudinaliter rude striata ; anfr. 7 superne 

 rotundatis, in medio sub-planis ; ultimo superne obscure carinato ; sutura 

 profunda, simplici ; apice acuto ; apertura sub-rotunda ; labro acuto, in- 

 tus incrassato ; columella complanata, plica, crassa instructa ; colore testa? 

 rubro-flavido, epidermide dense nigra obtecto ; columella et labri exte- 

 rioris margine profundo, intus nigro-fuscis ; apertura intus coeruleo- 

 alba. 



Long. -H ; lat. ^ poll. 



Habitat. — Kalai, Molokai. On the ground, under low bushes. 



Shell elongately conical, longitudinally rudely striate ; whorls 

 7, rounded above, flattened centrally ; last one obscurely cari- 

 nated superiorly ; suture deep, simple ; apex acute ; aperture sub- 

 rotund ; lip acute, slightly thickened within ; columella flat- 

 tened with a thick plait ; color of shell pale salmon, covered 

 with a densely black epidermis ; columella and a deep margin 

 of the outer lip within dark brown; interior of aperture bluish 

 white. 



3. Achatinella petricola. 



A. testa dextrorsa, acuto-conica, longitudinaliter rude striata ; anfr. 6, 

 rotundis, ultimo ssepe inflato ; sutura simplici, impressa ; apertura rotun- 

 do-ovata ; labro acuto, intus sub-incrassato ; columella longiori, plica 

 revolvente sub-centrali instructa ; ssepe umbilicata ; colore fusco cor- 



