EXPLANATION OE THE MAPS. 
0 c .) Brown coal strata on the west and southern brim of 
the central Waikato basin. 
2. Marine argillaceous marl , sand, and limestone , with numerous 
‘petrifactions. 
(a.) Waitemata beds: sandstone and marl, on the isth¬ 
mus of Auckland, on the North Shore and Manukau, 
with stray pieces of wood transformed into brown coal. 
On the Orakei Bay, near Auckland, strata rich in 
glauconite, many foraminiferse and bryozose with small 
pectens— 
Pecten Aucklandicus (Zittel), 
,, Bischeri (Zittel)— 
small forms similar to Bivalves and Belemnites, which 
are most probably the centres of Yaginella shells. 
(b.) The limestone cliffs of Drury, near Auckland : flat 
limestone rich in foraminiferae, with Turbinolia, 
Schizaster, Terebratula, Pecten, &c. 
(c.) Waikato Heads and southerly direction of the West 
Coast : granulated sandstone strata, resting irregu¬ 
larly on the above-mentioned Belemnite beds with coal 
layers, and containing Cidaris, Nucleolites, Schizaster, 
Pasciculipora, Ketepora, Cellepora, Waldheima, Pecten, 
Sharks’ teeth, &c. 
(d.) Clay marl and flat sandstone on the borders of 
Whaingaroa, Aotea, and Kawhia, on the West Coast, 
with Pecten, Waldheimia, &c., and many Poraminiferes. 
( e .) The flat coarse limestone in the Upper Waipa, 
Maungapu, and Mokau district, with many subterrestial 
rivulets, caves, and funnel-shapel holes. 
POST-TEKTIABY (OB QTjATEENABY) POEMATION. 
1. Plastic clay and sand, with Lignite in the Lower Waikato 
basin, and in the flats on the south and east side of the 
Manukau harbour. 
2. The terrace formation in the Lower and Middle Waikato 
basin—the terraces the number and regularity of which 
causes astonishment to the observer, are the consequences 
of the continual erosions of the rivers during: a slowly 
CD #y 
continuing rising of the lands in the quaternary period. 
