240 Transactions of the Boyal Microscopical Society. 
H. Isevis, Ehr., and H. patagonicus, Ehr., are only known to 
me through the very imperfect figures in the ‘ Mikrogeologie.’ 
Apparently allied to H. maxwius and Pijxidicula radiata is 
Weise’s Craspedodiscus radiatus.^ His figure represents a disk with 
a large umbilicus on which a number of distinct granules are con- 
centrically disposed ; the remainder of the disk has very fine radi- 
ating striae ; the diameter of disk ( x 300) according to his figure is 
exactly one inch, diameter of umbilicus -jq. If these forms be 
distinct, their specific names must be changed, as they all un- 
doubtedly belong to one genus. — E. K.J 
Amphora, Ehr. 
5. A. Schmidtii (P. Petit). ‘A. S. Atlas,’ pi. xxviii. fig. 51, 
without name or diagnosis. Valves cymbiform, slightly turgid at 
the centre of the ventral margin (du cote le moins courhe) ; ex- 
tremities rounded ; median line faintly curved. Striae transverse, 
on the dorsal side (du cote le plus courhe) of the median line short, 
distinct, submarginal, slightly radiant, not reaching the median line 
by a length equal to the diameter of the valve; striae on ventral 
side very short, close to but not touching the median line, inter- 
rupted opposite the centre by a blank space. Median line sub- 
central. Length 88 /x, breadth 15 ju 4. 
Foveaux Strait.t 
6. A. cristata (P. Petit). Valves cymbiform, with capitate 
extremities suddenly contracted below the apices; ventral margin 
abruptly inflated at the centre, median line very close to this 
margin. The dorsal margin has a large crenated ridge, the crena- 
tions of which gradually decrease in breadth as they approach the 
apices. Striae distinct, parallel on the valve radiating on the ridge : 
about 25 in 25 ya. Average length 77 //,, greatest breadth with the 
ridge 19 //,. 
Very abundant in Foveaux Strait. PI. XIV., Fig. 8. 
This beautiful species approaches very near to A. sinuata in 
outline, but difiers in the valve being distinctly divided into two 
parts, the valve proper, and the so-called ridge ; it is also larger. 
7. A. aspera (P. Petit). Valves cymbiform, with extremities 
attenuated, sub-capitate, rounded, and slightly recurved ; median 
line for the greater part of its length and the central nodule 
obscured by the ventral margin. Strim punctate, radiant, resembling 
those of Stauroneis aspera, reaching the median line on the dorsal 
side. Length 57 2, breadth 13 /x 2. 
Foveaux Strait. PI. XIV., Fig. 9. 
This species resembles A. rhomhica,X but difiers in size, and the 
extremities are recurved. 
* ‘ Bull. Imp. Acad. St. Petersburg,’ vol. vi. p. 311, pi. ii. fig. x. 
t Foveaux Strait, New Zealand; lat. 46° 40' S., long. 168° 10' E. 
\ Kittou, ‘ Schmidt’s Atlas,’ pi. 40, fig. 30. 
