84 VARIATION, DISTRIBUTION, AND EVOLUTION OF THE GENUS PARTULA. 
TABLE 35.—Partula gibba, Guam. South Central Region (in part). 

Lip. 
Series. No. 
Yellow; Brown- 
White. yellow- orange. None. Trace. | Small. 
brown. 
PI 8 
Vilig, upper: mitellas;.0 00s hen vw ane aeraiiabe hee 120 30 34 
Pago. north:mitellac. 0. cscs eee sae eet are 31 4 24 
mitellasrubra 6 cicea se ss Sores Seceeae ss 13 9 2 
castanea-purpurea............c0eeeees 12 2 
VOSDELR-DODER a0 5555: cas 0a reat oa es 65s 1 1 
WESPEFA-CYANER «oo 5.c0 0s od iease ss hep 14 14 
DANI Ac st hatedide usc, atte cee Bie, ¢taeienaes ors ate te 71 30 26 
Lonfit: mitella-ribra ss <i ewle’s ses as > ae Bae 17 1 
Ordot: ical or si5.5.6,5:4:5cc bm Mae Aes ee Ao 8 fi ie 8 
mitella jcc vs s,s. dk enn ime tar aceon 21 7 14 

20 Raia Le. a0 J ape = te a Oe See ee Ore 

The northern Pago association (table 34) is quite complex, and yet its com- 
ponents agree fairly closely in their statistical characters, except in the case of the 
single vespera-rosea (fig. 42, plate 13) which is extraordinarily large; another excep- 
tion is found in the proportions of the aperture of the mitella-rubra class, where the 
figure is unusually low. 
TABLE 36.—Partula gibba, Guam. South Central Region (cont.), Macajna second. 






MEAN VALUE. 











Shell. Aperture. Length aper- 
Series. No. SS OE ee ee 
shell, propor- 
Length. Width. Proportions. Length. Width. Proportions. tions. 
mm, mm, Dp. ct. mm, mm. d. ct. dp. ct. 
initellan scan Seedaaee ee 74 | 16.8176+.0506| 11.7811+.0401| 70.0405+.1877| 9.6162+.0293|} 7.0487 +.0230) 73.2568 +.1540|57.0270+.1180 
mitella-rubra............ 21 | 16.3929+.1177| 11.5191+.0832) 70.3095+.2012| 9.5571+.0636} 6.9286+.0429| 72.8333 +.2375/58.1190 +.2055 
phea-ribra i i.ctescte se. 16 | 16.6438+.1196| 11.6625+.0655| 70.0000+.3265| 9.5375+.0574| 7.0750+.0411| 74.0000 +.2981/57.3125 +.2401 
phea-purpurea.......... 7 | 16.7643 +.1905| 11.7857+.1538| 70.0714+.6505| 9.6143+.1085| 7.1000+.0817| 74.2143 +.2959/57.2143 4.3785 
castanea-rubra.......... 3 | 16.9500+.1457] 11.4333+.1943) 67.8333+.4857| 9.6333+.0971| 7.0333 +.1600|72.1666 +1.1132|57.5000 +.5781 
castanea-purpurea....... 4 | 17.2250+.0839| 12.0500+.1678) 69.5000+.9236| 9.7500+.0559} 7.5000+.1012| 73.5000 +.8389|56.2500 +.2796 
vespera-rosea............| 8 | 16.3250+.0996| 11.3500+.0664| 69.5000+.3372|} 9.3750+.0751| 6.9000+.0584) 73.7500 +.2839|57.2500 +.3909 
vespera-cyanea.......... 1 | 16.8500 12.7000 70.5000 10.3000 7.5000 70.5000 56.5000 
yl ee eee ris See 134 | 16.7224+.0407| 11.7075 +.0307| 69.9891+.1272| 9.5925+.0224| 7.0343+.0174| 73.3508 +.1131|57.2388 +.0889 





STANDARD DEVIA 




0.6460 +.0358) 0.5114+.0283} 2.3948+4.1327| 0.37354.0207| 0.2942+.0162) 1.9646+.1089)} 1.5057 +.0834 
21 -7998 +.0832 -5654+.0588} 1.3669-+.1422 4457 +.0464 -2914+.0303} 1.6135+.1608] 1.3965 +.1453 
16 -7093 +.0845 -3887 +.0463| 1.9365 +.2309 -3407 +.0406 -2437+.0290| 1.7678 +.2108} 1.4238 +.1698 
7 7472 +.1347 .6034-+.1087} 2.5516+.4600 4257 +.0767 .3207 +.0578| 1.1606+.2092| 1.4846+.2676 
3 .3741 +.1030 -4989 +.1374| 1.2472+.3434 -2494 + .0679 .4109+.1131} 3.8586+.7871] 1.4142 +.4088 
castanea-purpurea....... 4 -2488 +.0593 .4975+.1186| 2.7386+.6531 -1658 +.0395 .3000+.0715] 2.4875 +.5932} 0.8291 +.1977 
vespera-rosea............ -4176+.0704 .2784+.0469| 1.4142 +.2384 3152 +.0531 .2449+.0413) 1.1989+.2021] 1.6393 +.2764 
VESPCTA-CYANCA, 65.65 6.55b Pt Re cceradend Sele sie mised esate me elated , Dipbahell| w.c--« aaiehas aval ©. chu alate ocatcalis < Sieis SUere Ree Diaie cremerictal salle feds: , olla te Copal ct ect titer Oia ronan cen 


phea-rubratg c2 co) eee 
pheea-purpurea.......... 
castanea-rubra.......... 




















Lisle eee ene aan -6992 +.0288 .5277+.0217| 2.1836+.0899 3845 +.0158 -2990+.0123) 1.9413+.0800) 1.5255 +.0628 
