ore: membrana valvas
tegente (post desiccationem) fusco rufescente obscuro: rostro dimidiam
carinae longitudinem aequante, superficiei internae altitudine latitudinem
plus duplo superante: pedunculi squamis inaequalibus, non symmetricis:
verticillis longiuscule distantibus._

Capitulum with one or more whorls of valves under the rostrum: upper
pair of latera only slightly larger than the lower latera: membrane
covering the valves (when dried) dark reddish-brown: rostrum half as
long as the carina, with its inner surface more than twice as high as
broad: scales of peduncle of unequal sizes, unsymmetrically arranged in
rather distant whorls.

Maxillae with two tufts of fine bristles, separated by larger spines:
caudal appendages uniarticulate: filamentary appendages none.

New Zealand; Mus. Cuming.

_Capitulum_, much flattened, broad, sub-triangular. Valves exceedingly
various in number; in the largest specimen with a capitulum 8/10ths of
an inch high, and 9/10ths of an inch wide, there were only thirty-one
valves, and these formed only a single whorl under the carina and
rostrum; whereas, in another specimen, which was barely 6/10ths of an
inch in length, there were fifty-two valves, and these formed two or
three distinct whorls under the carina. Scuta, terga, carina, and
rostrum, much larger than the other valves. All are moderately thick,
placed rather distant from each other, covered with thick membrane which
abounds with tubuli, arranged in rows; surface apparently smooth, but
with a very high power, extremely minute spines can be seen at the
extremities of almost all the tubuli. Little bunches of reddish fibrous
matter are imbedded in the membrane, like tufts of sea-weed floating in
water.

_Scuta_, triangular, basal margin curved, protuberant; the upper part of
the tergo-lateral margin is, also, slightly protuberant.

_Terga_, large, oval, basal angle broad, square; lower part of carinal
margin straight, upper part narrowed in; the apex is covered with
membrane and projects freely.

_Carina_, triangular, internally deeply concave, either straight, and
with the apex free, or inwardly and considerably curved; basal margin
nearly straight.

_Rostrum_, about half the length of the carina; either straight or
inwardly curved; it projects freely for full half its length; inner
growing surface triangular, more than twice as high as wide; basal
margin very slightly hollowed out. The _sub-carina_ and _sub-rostr