314 Mr. F. Chapman on 
3. Haplophragmium rheticum, sp. n. 
(PL. XI. figs. 3, 4.) 
Test free, compressed, consisting of an involute plano-spiral 
series of chambers, which in their later growth take on a 
linear arrangement. The sutures of the chambers are well- 
marked superficially, and the edge of the dorsal margin is 
constricted at the sutural points, thus giving the test an 
angulated appearance. Shell-texture coarsely arenaceous. 
Length of a perfect specimen yy inch (1°6 millim.) ; breadth 
of spiral portion 35 inch (*85 millim.). 
This species resembles 1. elegans* of the Gault in the 
angulate contour of the test; the morphological types of the 
two forms are, however, quite distinct, since the Rheetic 
species is strongly compressed on the umbilical axis and the 
segments are in the later growth disposed in a linear manner. 
The crozier-like shape of the test of H. rheticum recalls the 
form of H. agglutinans; but in the latter the spiral series of 
chambers is evolute. 
H., rheticum is found in the Rheetic series at Wedmore, in 
bed no. 2, where it is rare, and in no. 6, very rare. 
4. Haplophragmium canariense (d’Orbigny). 
CP), XT Mtigs: oa, 6.) 
pi Maid vibe tie d’Orbigny, 1839, Foram. Canaries, p. 128, pl. ii. 
figs. 33, 34. 
Lituola nautiloidea, var. canariensis (pars), Parker and Jones, 1865, 
Phil. Trans. vol. clv. p. 406, pl. xv. figs. 45 a, b. 
Haplophragmium canariense, Brady, 1884, Chall. Rep. vol. ix. p. 310, 
pl. xxxv. figs. 1-5 ; Heeusler, 1885, Neues Jahrb. f. Min., Beil. Bd. iv. 
p- 12, pl. i. figs. 17-20; id. 1890, Abhandl. Schweiz. paleeontogr. 
Gesellsch. vol. xvii. p. 34, pl. iv. figs. 1-3. 
The oldest fossil deposits in which the above species has 
hitherto occurred are those of the Middle Lias. Some of the 
specimens found in the Neocomian beds of Surrey, and 
described under the name of Haplophragmium nonioninotdes, 
Reuss, are perhaps referable to the above species ft. In the 
Rheetic specimen the sutural lines are rather obscure ; other- 
wise it is comparable with typical examples. 
H. canariense was found in the Rheetic of bed no. 6, at 
Wedmore. One specimen. 
* Chapman, 1892, Journ. Roy. Micr. Soc. p. 322, pl. v. fig. 10. 
t+ Chapman, Quart. Journ. Geol. Soc. vol. 1. (1894) p. 695, 
