rj.ATE XV. 
Eiitoliuin avifulatiiin, Swalloic, sp. (?) 
1. More or less decorticated valve, with slightly elevated auricles. 
2. Interior of a \al\e, with elevated ainicles, one hidden hy matrix. 
.‘5. Ihitirely deeorticated sjieciincn (not an inteiaial cast) with normal auricles, impressions 
of the umhonal div('rging ridg'(>s and linear concentric sculpture. 
1. Entirely decorticated examj)le (not an internal cast), with normal auricles shoM'ing 
l iteral idiliipiity, n hich sometimes occurs in s))ecies of this genus. — x 2. 
*V^•ic^do 2 )ecten jitychotis, McCuif, sp. 
'). Internal cast of a right ^•a.lve, with a long anteiior auricle sej>a rated hy a deej) hyssal 
sinus. — X 2. 
(). Inti'i'ual easts of right and left valves, eontiguous to one another, although notin 
apjiosition. Thi' anti'i ior auricle of the right ^alve disjilavs two radiating costre. 
7. Jnti'rnal cast of a right valve, witli a similar anterior auricle to that of the like value 
in Idg. (■). 
A\ ieulo 2 >ecten tessellatus, Phillips, sji. 
y. Internal cast of portion of a, li'ft \’alve. -x 2. 
9. Nearly mitire internal cast of a left ^■ah■e, exhihiting the jiointed dorso-lateral angle, 
and prolongation of the jiosterior costie into free spines. — x 2. 
An iculojiecten, sj). 
10. Testiferous \al\-e, helimed to hi' identical with that referred by De Koninck to 
.1. grnnosits, .1. do C. Shy., sp. 
An iculopecti'ii, sj). 
11. Decorticated left (?) valNe, with jilain eostax 
12. Less decorticated left (?) val\e, helieved to he identical with that referred hy 
De Koninck to ^1. knoclconnicnsis, McCoy, sp. The co.staj are linear and decus.sated 
hv fine concentric sculpture. — x 2. 
Localities. 
Fig. 
1. 
Somerton. 
Fig. 
■} 
Somerton. 
Fig. 
;h 
Somerton. 
Fig- 
4. 
AVest of Alount Uriari, Somerton. 
Fig. 
.”). 
Near Crow’s Nest, Mount Victoria, Queensland. 
Fig. 
C. 
Near Cresford. 
Fig. 
7. 
Near Gresford. 
Fig. 
8 . 
Toiryburn. 
i'ig. 
9 
Torryhurn. 
Fig. 
10 . 
AVest of Alount I^riari, Somerton. 
Fig. 
11. 
AA’est of Mount Uriari, Somerton. 
Fig. 
12. 
AVest of Alount Uriari, Somerton, 
