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POPULAR SCIENCE REVIEW. 
sea forms. Very few can be identified with known fossil species. The 
Report on the Ostracoda is magnificently illustrated with forty-four plates, 
the figures in which have been most beautifully executed by Mr. W. 
Purkiss, and an inspection of these will enable the reader to form some con- 
ception of the laborious and minute research that Mr. Brady must have 
devoted to these little carapaces. A few details of structure illustrative of 
generic characters are given in some of the plates, the only defect in which 
seems to us to be that they have no indication of the natural size of the 
objects, or of the magnifying power under which they have been drawn. As 
the figures are enlarged from 30 to 60, and sometimes 80 diameters, an inti- 
mation of the amount of the enlargement ought to have been given. 
Prof. W. Turner seems to have had some very unpromising materials in 
the bones of Cetacea which were handed over to him for investigation, and 
he has apparently made about as much of them as could well be expected. 
The most important specimen was a young skull of Mesoplodon Layardi 
from the Falkland Islands, which has enabled the author of this report to 
furnish some interesting details as to the formation and structure of the 
teeth in th's imperfectly known Cetacean. Other specimens belonging to 
the same species were obtained at the Cape, the Chatham Islands, Australia, 
and New Zealand, so that the species seems to make the circuit of the 
Southern Hemisphere. The skull, cervical vertebrae, and sternum of the 
young animal, and sections of its teeth and of those of the adult are figured. 
Some details of the structure of Hector’s JEpiodon chathamiensis are given, 
and the species is identified with Ziphius cavirostris. A great number of 
tympanic bullae and fragments of other bones dredged up in various localities 
are also described, and some of them figured. 
Prof. W. K. Parker contributes the first part of an elaborate memoir on 
the embryonic development of the Green Turtle ( Chelone viridis), in which 
he deals solely with the development of the cranium, face, and cranial nerves. 
Mr. Parker points out certain resemblances and differences between the 
Turtle and other Reptiles and the Batrachians, and indicates that the 
great number of somatomes in the neck and tail of the early embryo would 
seem to ‘ suggest an ancestry having a longer neck and tail than the existing 
forms;’ and he goes on to remark that 1 as some of the cretaceous Chelonia 
certainly possessed teeth, and as a few forms, both fossil and existing, have 
the nasal bones distinct from the prefrontals, it is evident that the modern 
Chelonia are forms that have become differentiated from their nearest reptilian 
relations by specialization. A long-necked ancestry, with a feebly deve- 
loped carapace, and many feeble bones of the plastron arranged triserially, 
would bring us very near to the Plesiosaurs.’ This report is illustrated with 
15 plates. 
Finally, we have Dr. Gunther’s excellent report upon the Shore-fishes, 
in which he describes the littoral fishes collected during the voyage, with 
the addition of the few freshwater forms that were taken. Dr. Gunther 
tells us that he had 1400 specimens, representing 520 species, out of which 
94 were new. He has treated the species in faunas laid down and divided 
upon a somewhat elaborate plan, but for the convenience of reference in 
determining species he has appended to his memoir a systematic list of all 
the species with references to the pages on which they are described or 
