Foraminifera and a Tubicolotts Worm from the Permian of the 
North-West Division of Western Australia. 105 
tapering aperturai end, miudi thicker vail and rough interior. H. hidbosa 
Cushman and Waters (1927, p. 109, pi. xxii, figs, la, b), from the Pennsyl- 
vanian of Michigan, U.S.A., is also somewhat similar but has the proloculus 
flattened on one side and is much smaller. 
Hyperammina (?) rudis, sp. nov. 
Plate T., fig. 3, 
Pest elongate cylindrical, consisting of a tubular chamber {'losefl at one 
end and of almost the same diameter throughout ; wall thick, com[K)sed of 
large angular to snbangular sand grains firmly cemented ; surface very rough; 
aperture formed by the open end of the tube. 
Length of holotype (probably incomplete), 1-4 mm.; breadth, 0-3 mm. 
Other specimens attain a slightly greater length. 
Holotype from Sample 8 {Lingula beds). 
There are fifteen examples, all from Samide 8. While one end of the 
tube of this species is closed, there is not a distinct proloculus and it is accord- 
ingly doubtful whether it is properly referable to Hyperanim.ina. The very 
coarsely built test is unlike that found in typical Hyperamfninae and strongly 
resembles that of Rhabdammina, in which genus, however, the end of the 
tube IS not closed. It seems likely that a new genus of the Astrorhizidae 
is represented but the material available is not sufficiently Mell iireserved to 
enable this to be decided. 
Genus HYPERAMMINOIDES Cu.shmnn and Waters, U)2S. 
Hyperamminoides acicula, sp. nov. 
Plate I., figs. 4, 5 ; Plate IT., fig. 4. 
Test elongate, tapering, sometimes at first slightly curved, very narrow 
at the initial end and from there graduall\- v idening ; tube constricted at 
irregular intervals but' not septate, the ('onstriftions strongest in the early 
part of the shell ; wall thick, composed of comfjaratively small (juartz grains 
set^ in abundant siliceous cement ; exterior smooth ; ajWtural end not con- 
stricted ; aperture circular, formed by the ojien end of the tube. 
Length of holoty|je, 1 1 mm. ; greatest diameter, 1-3 mm. Other broken 
specimens attain a diameter of 1-4 mm. f)r more and when complete were 
probably 18 to 20 mm. in length. 
Holotype from Sample 7 — brown, imjnire limestone, Lingula beds, south 
side of Minilya River, near Coolkilyia Pool, Wandagee Station (coll (''Teich- 
ert). 
The best examples of this fine species are from the Lingula beds in which 
it is common. The initial end of the larger specimens is in every case bi-oken 
off. With these specimens, however, there are others of similar fr>rin. but 
very small and delicate, and it apjjears that these represent the early stages 
of the larger exam]des. Sometimes they are slightly curved in the' earliest 
portion, but, with one exception, they are also incomplete. The excep- 
tion, which is figm'ed, shows a minute ovoid proloculus and is possiblv the 
megalosphenc form of the s]jecies. Another of these specimens, whicli is. 
also figured with the same magnification, is extremely slender and apparently 
represents the micros pi leric form. 
