316 NATURAL HISTORY MISCELLANY. 
or unwound at full length. It was contractile, also, and quickly jerked 
the body beneath the sand when alarmed. 
But the most startling discovery in connection with this interesting 
animal was the fact, that its blood was red. This was strongly marked 
in the gills, which were found in the shape of a series of rows of simple 
lamelle, hanging from the internal surface of the mouth; thus proving 
the correctness of Vogt's observations from alcoholie specimens 
times the peduncle sepu become conjeste E nd a deep rose blush was 
markedly distinct. The es were distinc 
iter believes Bde Matos ods to = true articulates, having cer- 
tain affinities with the crustacea, but properly A penetra to the worms, 
coming nearest the tubicolous annelids. They better be regarded as 
forming a comprehensive type, with general pond features. Possibly 
they have affinities with the mollusks, through the homologies pointed 
out by Allman as existing between the Polyzoa and Tunicates. 
It is interesting to remember that Lingula, though one of the earliest 
animals created, has yet remained ee the same through all geo- 
logical ages to the present time. — Epwa ORSE 
Fig. 76. 
Fig. 78. 
Fig. 76. Peduncle pu retaining a portion of the sand tu 
Fig. 77. Showin, e valves in motion; the n broken ania new sand case being formed. 
Fig. 78. Pedunele broken close to erm and sand ease being formed, 
uE RuBY CROWNED WREN. — In reply to Mr. Allen's question, I ma 
state positively that, according to my experience, the adult fertile Aem 
is **ruby-crowned " like the male. She is perhaps a trifle smaller, not quite 
so brightly colored, and with the flame-colored patch possibly of alittle less 
extent; but she cannot be distinguished from the male with certainty, 
except on dissection, and even then it is not always easy to determine 
from slight inspection, unless the organs are enlarged in functional activ- 
ity. The barren or sickly female may possibly not acquire the ornament 
Birds of both sexes Tack it for at least a year; whether they breed or not 
with plain heads I do not know. These come along in spring in the rear 
of the mature birds; they are most abundant at the time when the latter 
are about leaving. — ELLIOTT Cougs. 
