of Edinburgh, Session 1881 - 82 . 
713 
The following notes refer to species mentioned in the foregoing 
table, which are either new to science or otherwise present points of 
interest : — 
Planispirina contraria (Biloculina contraria , d’Orbigny). — Dr. 
Steinmann ( Neues Jahrb. fiir Min ., 1881, vol. i. p. 37, pi. 2), 
describes in detail the structure of the shell in this species, and 
shows sufficient grounds for separating it from the genus Bilo- 
culina. In point of fact, it is an intermediate sub-type, more nearly 
resembling Hauerina than Biloculina , but differing from the former 
in two important particulars, namely, the alar extension of the 
chamber-walls over the lateral surfaces of the test, which imparts 
to the shell a laminated structure like that of a nummulite, and 
the simple arched orifice instead of a cribrate aperture. On the 
basis of the former of these characters Dr. Steinmann proposes for 
it the generic term Nummoloculina. 
My friend, the Eev. A. M. Norman, placed in my hands, long 
ago, some specimens dredged in the Faroe Channel, which were in 
the collection of the late Edward Waller. These belong to a closely 
allied species, and have been regarded as somewhat anomalous 
Hauerince . More recently, Professor Seguenza of Messina has had 
the goodness to send me examples of his Planispirina communis 
(Mem. R. Accad. Lincei, 1879-80, vol. vi. p. 310, pi. xvii. fig. 18), 
and I find them to be quite indistinguishable from Mr. Waller’s 
unnamed form ; in both the laminated structure is even more ap- 
parent than in PI. contraria. Under these circumstances Professor 
Seguenza’s generic term takes precedence of the more appropriate 
one suggested by Dr. Steinmann. The “ Challenger ” species 
described as Hauerina exigua (Quart. Jour. Micr. Sci., vol. xix. 
n. s. p. 267) must be referred to the same genus ; and there is 
still another more aberrant modification amongst the “ Challenger ” 
gatherings, to which the MS. name PI. sigmoidea has been applied. 
Cornuspira striolata, nov., resembles the typical C. foliacea in 
general characters, but the last convolution widens rapidly, 
spreading out and imparting to the test a contour very similar 
to that of the wide “ bonnet-shaped ” varieties of Peneroplis. 
The specimens sometimes attain extraordinary dimensions, the 
largest hitherto found being one from Station E, which mea- 
