416 RALPH TATE. 
years ago on the surface of the Eocene at Spring Creek is probably 
an example of the species. 
By its septal arrangement and false trabecular columella, this 
species is linked with Montlivaltia Vignei, of the Eocene (or 
oligocene) of Sind. 
A coral from Muddy Creek was in 1878 referred to this genus 
by Tenison-Woods as Montlivaltia discus, but, as Duncan pointed 
out in his “Revision of the Madreporaria” (1884), incorrectly so. 
As shewn in Wood’s drawing, synapticulae are present, and 
Duncan therefore properly placed it with the Fungide under 
Moseley’s new genus of Bathyactis. A similar coral, and from 
the same locality, had however, been previously described by 
Duncan himself, viz., in 1865 and again in 1870 as Antillia lens, 
the synapticulae, if his specimens shewed any, not being noticed. 
Concerning the identity of Woods’ and Duncan’s species there 
can now be no doubt, and by the rule of priority the coral should 
therefore be known as Bathyactis lens, Duncan. 
PLATE XIX. 
Fig. 1. Plesiotriton Dennanti Fig. 8. Streblorhamphus obesus 
oe poe ee a » 9. Fossarus refractus 
we BP » 10. Borsonia balteata 
»  & Borsonia Otwayensis » ll. Hemiconus Cossmanni 
a OG Gastini bllformis » 12. Cordieria conospira—a, front 
yi oe onia pro aspect; b, embryo and 
rae penn S588 exterior, first spire-whorl; ¢, side 
b, interior aspect. view of body-whorl. 
PLATE XX. 
Fig. 1. easiness Bhenih ate corallum 2 diam.; b, portion of calice 
showing two systems, highly magnified. 
ae ovaseutins supracostatus—a, corallum 1-5 diam.; 6, calice much 
enlarged. 
Pees \ wife aes subvaricosa—a, front view; 6, lateral aspect of body- 
orl. 
un PE Moran mirulus—a, front view; b, basal view of body-whorl. 
ai ‘ Dissochilus oe 
pat = Oe oe eburn 
» 7. Martesia aasntbiles ty left valve; b, = gant Lad valve 
a. F Puachate hemispila—a, side view; b, seen from above 
»» 9. Subemarginula occlusa—a, seen from above; b, prsrebecceane™ of 
ornament, 
», 10. Infundibulum latesulcatum—a, base ; b, elevation. 
