228 MESSES. BRADY, PARKER, AND JONES ON 



104. Truncatulina mundula, n. sp. (Plate XLV. fig. 25.) 



Characters. Test free, rotaliform ; composed of about three convolutions, which are 

 evolute on the superior and completely involute on the inferior side, the outermost whorl 

 of the adult shell consisting of from ten to twelve segments. Superior face slightly 

 convex or subcorneal, generally coarsely perforate, the sutures and periphery marked by 

 thickening of the chamber-walls ; inferior face convex, sometimes a little depressed at 

 the umbilicus ; perforation inconspicuous ; sutures slightly excavated or marked by fine 

 lines only. Diameter -^ inch (0*42 millim.). 



This is a compact, neatly made variety of Truncatulina that has not hitherto, so far 

 as we are aware, received a name. Morphologically its place is near Tr. haidingerii, or 

 between that species and Tr. ungeriana ; but it is less stoutly built than the former 

 species and has nearly double the number of chambers in each convolution. Its nearest 

 isomorph is perhaps Pulvinulina karsteni. 



Common at 260 fathoms. 



105. Truncatulina reticulata, Czjzek, sp. (Plate XLV. figs. 23, 24.) 



Truncatulina reticulata, Chall. Report, p. 669, pi. 96. figs. 5-8. 

 Tolerably abundant at three stations. 



Anomalina, d'Orbigny. 



106. Anomalina ariminensis, d'Orbigny, sp. (Plate XLV. figs. 20, 21, 22.) 

 Anomalina ariminensis, Chall. Report, p. 674, pi. 93. figs. 10, 11. 



Generally distributed. 



107. Anomalina ammonoides, Eeuss, sp. (Plate XLV. fig. 19.) 



Anomalina ammonoides, Chall. Report, p. 672, pi. 94. figs. 2, 3. 

 Associated with A. ariminensis in the two deeper soundings 



Pulvinulina, Parker & Jones. 



108. Pulvinulina elegans, d'Orbigny, sp. (Plate XLVI. fig. 2.) 



Pulvinulina elegans, Chall. Report, p. 699, pi. 105. figs. 4-6. 



Small specimens, both of the deep-water (P. partschiana) and shallow-water forms. 



109. Pulvinulina schreibersii, d'Orbigny, sp. (Plate XLVI. fig. 4.) 

 Pulvinulina schreibersii, Chall. Report, p. 697, pi. 115. fig. 1. 



Of medium size, at 43 fathoms and 47 fathoms. 



110. Pulvinulina menardii, d'Orbigny, sp. (Plate XLVI. fig. 3.) 

 Pulvinulina menardii, Chall. Report, p. 690, pi. 103. figs. 1, 2. 



