OCR Text |
Show 1873.] NEW SPECIES OF ACHATlNELLINcE. 79 crementi lineis leviter striata, dilute brunnea, saturatius vel cinereo strigata; regio umbilicalis scepe castanea; apex albus; spira concaviuscula ; anfract. 6, primi 4 planiusculi, cceteri convexi; sutura saturate castaneo distincte marginata; apertura intus albida ; perist. fuscescens, intus incrassatum; plica columellaris valida, rubescens. Long. 17 mill., diam. lig. Habitat. Sandwich Islands. In form this species agrees very fairly with some varieties of lugubris, Chem.; but it has a shorter spire and blunter apex than the usual form of that species. The coloration is of a different character. APEX LEUCORRHAPHE, Gk. (Plate X. fig. 2.) Testa dextrorsa, breviter ovato-conica, incrementi lineis (haud spiralibus) striata, grisea, strigis saturate cinereis irregulariter in-terruptis, lineisque spiralibus paucis albis indistinctis ornata sutura late niveo marginata; anfract. 6|, apex nigrescens, primi 4 albi, subplani, cceteri convexi; apertura parva, subauriformis, alba; perist. leviter dilatatum intusque incrassatum; plica columellaris magna, rosea. Long. 19 mill., diam. 12. Var. Testa ovato-conica, griseo saturate cinereoque regulariter strigata ; spira recte conica. Station. This species is arboreal. Habitat. Kalaikoa, on the island of Oahu. Waimea? a variety, with spire regularly conical, is reported to have been found in Waimea. Affinities. It is allied, though not very intimately, to A. apicatus, Nwc. Remarks. No sinistral form of this species has been found. The specimen figured is from Kalaikoa. APEX LILACEUS, Gk. (Plate X. fig. 4.) Testa dextrorsa, globoso-conica, nitida, incrementi lineis (haud spiralibus) striata, lilaceo-cervina, albido strigata; sutura dilute marginata; anfract. 6, primi 3 subplani, albi, cceteri convexi; ^anfract. ult. medio interdum obscure obtusatim angulatus; apertura albida ; perist. dilute roseo-fuscum, paululum dilatatum, intus incrassatum ; plica columellaris valida, pallide rosea. Long. 21 mill., diam. 12*§. Station. O n trees. Habitat. The metropolis of the species is Ahonui, on Oahu. It is also abundant in Kalaikoa, but becomes very rare in Wahiawa, Helemano, and Kawailoa. Affinities. It is readily distinguished from A. apicatus, N w c , by the colour of the apex, which is chestnut in that species, but white in this. Remarks. Sinistral specimens are very rare. The specimen figured is from Kalaikoa. |