428 Reviews—Beeby Thompson's M. Lias, Northampton. 
Woodward) of the most perfectly preserved head of the Liassic 
Shark, Hybodus Delabechei, hitherto discovered. The specimen is 
contained in the Reed Collection of the York Museum and exhibits, 
for the first time, the precise arrangement and relative proportions 
of the teeth, in addition to some of the characters of the cranial 
cartilage. The mandibular teeth are disposed upon each ramus of 
the jaw in ten or eleven transverse series, being thus more numerous 
than in Acrodus; and there is no azygous series of symphysial teeth. 
The dorsal covering of shagreen is sparse, and the absence of barbed, 
lateral head-spines is somewhat remarkable. 
2. Fis Remains From THE Lower Coat Mrastres or LANCASHIRE. 
By Herzsert Botron. Trans. Manchester Geol. Soc. vol. xx. 
pt. viii. 1889. 
HE author records the occurrence of fossil fish remains in shale 
overlying the Upper Foot, or Bullion Mine Coal, in Rossendale, 
and publishes brief notes upon the specimens. A large Hlonichthys 
appears to be referable to Z#. semistriatus, Traq.; a head of Celacan- 
thus is shown to differ in some respects from that of the common 
C. lepturus ; and other less satisfactory fragments do not permit of 
any tolerably precise determination. 
3. “ UEBER ZWEI Fiscoe aus DEN ANGULATUSKALKEN DES UNTER- 
Eusass.” By W. Descxe. Mittheil. Commission geol. Landes- 
Untersuch. Elsass-Lothringen, vol. i. 1888. 11 pp. 1 pl. 
i eo author describes a new species of Heterolepidotus and another 
of Dapedius from the Angulatus-beds of Alsace, and claims 
these to be the oldest Liassic fish-remains hitherto discovered. 
Heterolepidotus angulati is founded upon the well-preserved trunk of 
a typical member of the genus, closely related to 7. serrulatus, but 
differing in the smoothness of the scales. Of Dapedius cycloides, a 
complete fish forms the type-specimen, and this seems to differ from 
the well-known D. orbis of Barrow-on-Soar, merely in the prominent 
sculpturing of the scales upon the foremost half of the trunk. Of 
the Heterolepidotus a description alone is given ; but of the Dapedius 
there is a good photograph, with explanatory lettering upon a traced 
outline of the fossil. 
SEC Es OV) EES VE SS 
J.—Tse Mippir Lis or NortHampronsHire. By Beesy Tuomeson, 
F.G.S., F.C.S. (London, Simpkin, Marshall, & Co.) 8vo. pp. 150. 
Price 3s. 6d. 
INCE the days when Samuel Sharp laboured so successfully 
among the Oolites of Northamptonshire, no one has studied 
more assiduously the county geology than the author of the present 
work. Confining his attention mainly to the country accessible from 
the town of Northampton, he has added largely to our knowledge of 
the Upper Lias, in papers published in the Journal of the North- 
amptonshire Natural History Society; and he now gives us the 
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