66 D/nr/or's .'h/iiiia/ Report. 



ally contain a single young. A few cases have been found by the 

 writer in which a uterus has contained two young. In tliis case 

 the young are at different stages of development. In the terres- 

 trial forms, when a specimen is pregnant, there are usually from 

 three to five young. These are always in different stages of develop- 

 ment. In one case the writer found eleven young in the uterus of 

 an Achatinclla {LamincUa) gravida. 



The colle(5ting thus far has been confined almost entirely to 

 IMuuanu valley. About 3000 shells have been collecfted from the 

 north-western side of this valley. Of these shells 1785 belong to 

 Mr. D. D. Baldwin's Achatinclla ttinitizonata. Nuuanu valley has a 

 north-easterly trend. The sides are more or less precipitous and 

 rise from a few hundred to more than two thousand feet above the 

 .bed of the valle\-. The sides are covered by a low dense mass of 

 trees, shrubs, ferns and creepers. Extending into the valley, at 

 about right angles to the sides, are numerous sub-ridges. The upper 

 portions of these sub-ridges and of the valleys between them are 

 also overgrown with a dense mass of vegetation. The lower por- 

 tions and also the bed of the main valley are covered with the intro- 

 duced "Hilo grass" {Paspaluni coujiigatnin) with here and there 

 clumps or isolated individuals of L,ehua {Met rosidcros poly iiiorpha) , 

 Straussia, Guava [Psidiuui gjiayava) , etc. There are about twent^'- 

 three of these sub-ridges, which are more or less parallel to one 

 another. In some cases the foot of a sub-ridge expands into a more 

 or less undulating slope. In numbering these sub-ridges the num- 

 bers begin at the head of the valley. 



A. multizojiata is found on all the upper 17 sub-ridges, a dis- 

 trict of about a mile in length, and from 100 to 400 yards in breadth. 

 There are no permanent streams in any of the valleys between 

 ■these sub-ridges. Tw^o of these valleys usually have a little flow- 

 ing water. The valley between sub-ridges XIV and XV serves as 

 ;a boundary to several of the color- varieties. That between X\'II 

 and XVIII serves as a boundary to the whole species. In some 

 cases a sub-ridge has been divided into two or more localities. 

 This has been done when there has been a group of trees isolated 

 from the rest of the trees growing on the sub-ridge. These locali- 

 ties are designated by adding a letter to the nvimber of the sub-ridge. 

 None of the localities are more than 150 yards in diameter. A. mnl- 

 iizonata is found in more or less open localities. Specimens are 



