Marwick.—Genus Glycymeris in Tertiary of New Zealand. 75 
Localities :— 
239—'* Fan coral bed, Porter and Thomas Rivers, Trelissick Basin ” 
(MeKay, 1879). (Holotype.) 
231— я ‘ Upper part Mount Brown limestone," Trelissick. 
ount Brown limestone, Coleridge Creek," Trelissick. 
449—'' Lower beds, Trelissick Basin " ' (Enys 1 88 
The matrix and preservation of this shell are ‘similar to that of 
the holotype, so it is probably eh Me same һогі?оп, and not from 
lower beds as stated in McKay’s manuscript. 
The species is distinguishable from nae other of the group by its wider 
beaks and greater inflation towards the ma 
т 
Glycymeris waipipiensis п. sp. (Plate 5, fig. 5; Plate 6, fig. 5.) 
Shell very large, regularly inflated, beaks wide and prominent, outline 
almost circular, anterior regularly rounded, posterior slightly straightened 
above; sculpture consisting of very fine radial riblets upon a system of 
obaölete narrow ribs, about 60 in number; waved growth-lines are pro- 
minent towards the margin ; inner margin very finely crenate ; ligamental 
area moderate, closely grooved ; teeth small, 7 on each side free of the 
area ; anterior muscular impression only slightly larger than the posterior. 
Height of поа к individual), 77 mm.; length, 79 mm. ; 
thickness of one valve 
Holotype i in the а Daal Dr. Marshall. 
Localities :— 
Waipipi (Marshall). (Also collected by Murdoch.) 
Kaawa Creek (small specimens). (Also collected by Bartrum.) 
This species is much larger than any of the others in the Agxinea group, 
described in this paper. It is intermediate in character between (7. tre- 
lissickensis and G. созса apt Small specimens would be distinguishable 
from the former by their more prominent and narrower beaks, and from 
the latter by their slightly stronger beaks and higher shoulders. 
Glycymeris shrimptoni n. sp. (Plate 5, fig. 3; Plate 6, fig. 3.) 
Shell of moderate size, н, beaks low; outline almost circular ; 
anal depression obsolete ; sculpture—the whole dise is covered with fine 
closely-placed radial riblets, ge 6 per millimetre, superimposed upon 
narrow obsolete ribs each bearing about 10 of the lines at the margin, near 
which especially there are concentric growth-lines ; inner margin finely 
crenate; ligamental area moderate, closely striate by 8 grooves; teetn 
small, 7 on each side free of the area ; muscular i impressions sube ual. 
Height of holotype (left valve), 44 mm. ; length, 43 mm. ; thickness, 
5 mm 
Holotype i in collection of N.Z. Geological Survey. 
Localities 
191 Shrimpton" s, Ngaruroro River, Hawke's Bay. (Holotype.) 
? 231—McLean’s, Ngaruroro River. (Very much worn.) 
This species is closely related to G. trelissickensis, but the beak is a shade 
higher and has a narrower angle; there is also less inflation towards the 
mar, 
ortis specimens develop a certain amount of obliquity, but they can 
always be separated from such species as G. callaghani and С. waitakiensis 
by their wider shoulders. 
