PARTULA GIBBA, GUAM. 
69 
Partula gibba of Guam surpasses all other species of Micronesia in the number 
and variety of its color-components, and is fully the equal in such respects of some 
of the highly diversified species of the Society Islands, where the genus maintains 
its present headquarters. 
No less than seven primary color-classes are distinguish- 
able which differ mutually to various degrees; the contrast is very sharp in some 
comparisons, while in others the distinctions are less marked and variants of one 
class approach nearly to another. 
Furthermore, the members of four of these 
classes resolve themselves into clear secondary sections, which will be consist- 
ently designated color-orders to distinguish them in scope from the primary groups. 
TABLE 29.—Paritula gibba. 
Locality. 
Northeast Region: 
South Central Region: 
Ylig, upper 
Pago North 
Macajna 2d, 
Macajna ist 
Timoneng 
Dungcas 
Cemetery 
Presidio, inner 
Presidio, outer 
Apra Region: 
OTOtEM ans tock foe es 
West Central Region: 
Southwest Region: 
Umatac Salonga 
Umatac Pajom 
Umatac Madog 
Merizo 

uni- 
bicolor. 
color. 
80 82 

Census of the color-classes and color-orders, Guam. 
mitella. 



phea- castanea- vespera- 
mitella- 
rubra. 
rubra. | purpurea.| rubra. | purpurea.| rosea. |cyanea. 
19 6 3 
45 1 
65 34 34 aexns 
56 B.4 fi} 
13 29 aa 111 
i7 1 SP 
47 3 3 2 2 2 
3 1 1 1 
13 12. ria 
17 Fae 
6 : Beas : 
= fy 15 2 rf 
oe 7 10 
5) iz 
" ne TL ae 
4 a a 
1 ae Sor 
ry 2 ay 4 









mar- 
ginata. 
——___} 
