58 Original Dcscriptioyis of Achatinella. 



the latter is black, whereas that of the former is brown, and that 

 of the intermediate forms varies from black to brown. 



Hab. Nuuanu A'alley. — Bald. 



Dr. Cooke, in his paper on the Distribution and \'ariation of 

 A. multizonata from Nuuanu \'alle\-, has divided this shell into 

 twenty-five color-varieties, using the letters A-T and V-Z. He 

 goes on to say that : 



"These color-varieties fall naturally into seven groups. The 

 first of these groups, and also the largest, is made up of the color- 

 varieties A-H. It is easily recognized, as none of the shells are 

 marked with dark bands or lines. The shells vary from white to 

 yellow. The apex is white to light brown ; never striped. The 

 columella is usually white, sometimes purple. This group repre- 

 sents about 37 per cent, of A. viidtizonata. Of this group 63 per 

 cent, w-ere found on lehua, about 16 per cent, on Straussia, and 

 17 per cent, on guava. 



"The second of these groups contains the color-varieties I-M. 

 The shells are white to yellow, sometimes marked with brown. 

 All the shells of this group are encircled at the peripher}* by a dark 

 brown band, or two brown lines. The apex in every case is white 

 or light brown. The columella is usually purple, almost never 

 white. This group is onl}- found from sub-ridges I-XIV. It con- 

 tains nearly 19 percent, of the specimens of A. imdtizonaia . Of 

 this group 53 per cent, were found upon lehua, 15 per cent, on 

 Straussia, and 24 per cent, on guava ; 48 per cent, of this group 

 were found on subridges IX-XIII. 



"The third of these groups contains the color-variety X. This 

 color-variety is so distinct from all the other color-varieties that it 

 is thought best to place it in a group by itself. All the specimens 

 came from sub-ridges III-V, 62 per cent, coming from sub-ridge 

 IV. About 40 per cent, were found on lehua, 21 per cent, on 

 Straussia, and 27 per cent, on guava. 



"The fourth group contains the color-varieties 0-Q. This 

 group is distributed over nearly the whole range of the species. 

 It is absent, however, from sub-ridges IX-XI. The shells of this 

 group are striped with from four to fifteen lines or bands. The 

 apex is striped with a light brown band. The columella is usually- 

 purple ; in only a very few cases is the columella white. Of this 

 group 48 per cent, came from sub-ridge XIV ; 44 per cent, were 

 found on lehua, 12 per cent, on Straussia, and 43 per cent on guava. 



"The fifth group is made up of color-varieties R-T. The 

 shell is white, variously striped ; the apex is white ; columella is 

 usually purple. About 60 per cent, were found on lehua, 15 per 

 cent, on Straussia, and 19 per cent, on guava. This group is dis- 



