158 Scientific Intelligence. 
caudal segments of Annelids, like Pectinaria and Sabelluria, with 
the peduncle of Brachiopods, but he does not mention the fact 
that in the former the anal orifice is at the end of the caudal seg- 
of trivial importance, for many soft bodied species of nearly all 
classes of invertebrates, whether Protozoa, Radiata, Mollusca, or 
Articulata, do the same thing. On p. 28, the identity of the 
cirri of Brachiopods and Annelids is asserted, but he has not men- 
tioned that in the latter these organs are genuine gills, with a 
complicated capillary vascular circulation, which has not been 
shown to exist in the former. So of the pallial membranes of 
Brachiopods and the collar of Annelids, he has shown their points 
of resemblance, but has largely ignored their great differences in 
structure, relations, and function. We would also remind our 
readers that a liberal use of printers-ink on diagramatic cuts, like 
those on page 21, may serve to conceal differences, as well as to 
show resemblances. 
ry 
he facts in regard to the embryology of the Brachiopods, 
t 
been seen or captured recently, so far as I have been able to collate 
them, reserving for a future article the full descriptions and figures 
at Newfoundland. (1). A specimen found floating at the surface, 
at the Grand Banks, in October, 1871, by Captain Campbell, of the 
schooner B, ins, of Gloucester, Mass. was taken 0 
board and part of it used for bait. Dr. A. S. Packard has given, 
in the American Naturalist, vol. vii, p. 91, Feb., 1873, all the — 
1 
jaws have since been sent to the Smithsonian Institution, and are 
They we 
now in my hands to be described and figured. ey were thought 
