1863.] 367 



the other having an amphiedral axis, with the zones 

 Z={2.2, 2.1 P , O 2 - 1 }, 2' = {2.1, 2.1^+2.1, 



5. Eight zoneless 2-ple monaxine heteroids, one having an am- 

 phiedral axis, and seven with amphigrammic axes. 



6. Nineteen monozones, of which 



6 have the zone Z = {2, 4, 0, O 3 }, 



1 has the zone Z={2, 4, O 2 }, 



2 have the zone Z = {4, 4, O 2 , O 2 }, 



3 have the zone Z={4, 2, O 2 }, 



2 have the zone Z={4, 2, O 3 , 0}, 



4 have the zone Z={2, 2, 0, 0}, 

 1 has the zone Z = {..,4, O 4 }. 



7. Forty- four asymmetric 8-edra 10-acra. 



Table B. 

 Janal zoneless amphigrammic poles : 



(55)* a 26=i, (44)1,46 = 1, (44) c 2 ,- a 46=l. 



Table C. 

 Zoned polar faces : 



6^47=1,1 fZ={2.2, 2 r , O 21 }. 



' = {2.1, 2 P +2.1, 

 Zoneless polar face : 



Zoned non-polar faces : 



7 m 37=l, Z = {4, 2, 3 ,0}; 



7 m 37=3, Z={2, 2, 0, 0} ; 



6^47=1, Z = {..,4, O 4 }; 



6^47=3, Z = {2, 4, 0,0 3 }; 



6 5t '47=2, Z={4, 2, O 2 }; 



5" l 57 = l, Z = {4, 4, 2 ,;0 2 }; 



5^57=2, Z={4, 2, O 3 }; 



5 TO0 57=3, Z={2, 4, 0,0 3 }; 



^5 W 57=3, Z={2, 4, 02}; 



4 di 67=5, Z = {4, 2, O 2 }; 



4^67 = 1, Z={4, 4, OVO 2 }; 



4^67=1, Z=={2, 4, O 2 }; 



