Bibliographical Notice. 487 
ctenoid ; those of the blind side are nearly smooth on the an- 
terior half of the body, and more conspicuously serrate on the 
posterior. One nostril situated between the eyes, the other 
above the lip. Eyes very small, the upper slightly in advance 
of the lower; interorbital space equal to the width of the orbit. 
Snout contained twice and two thirds in the length of the 
head. Angle of the mouth much nearer to the end of the 
snout than to the hind margin of the gill-cover behind the 
eye. ‘Tail not much elongate. The height of the body is 
two sevenths of the total length (without caudal), the length 
of the head two elevenths. Brownish, mottled with darker. 
‘Two specimens, 9? inches long. 
Harpodon miecrochir, sp. n. 
Dal sicy Av dans V2. 
This gigantic species of Harpodon differs from H. nehereus 
in having a second distinct band of palatine teeth within the 
first one, and in having the pectoral fin very short. The tubes 
of the lateral line are narrow and elongate; the basal half 
of the adipose fin is covered with scales. The interior of the 
mouth and gill-cavity is black. 
A single specimen, 27 inches long. 
BIBLIOGRAPHICAL NOTICE. 
Thesaurus Devonico-Carboniferus: the Flora and Fauna of the Devo- 
nian and Carboniferous Periods. By J. J. Bressy, M.D., F.B.S., 
&e. 4to. 447 pages. Van Voorst: London, 1878. 
Nive years ago we had the pleasure of announcing the completion 
of Dr. Bigsby’s ‘ Thesaurus Siluricus’ *, a work of long labour and 
sound knowledge and of great value to the geological world. This 
respected and veteran geologist has now accumulated a still more 
ample systematic treasury of fossil genera and species, namely those 
of both the Devonian and the Carboniferous systems of strata in all 
parts of the world. He has arranged them, like those of his Silu- 
rian ‘Thesaurus,’ in a tabular form, showing the authorities and 
references for the names, and the horizons, recurrences, and locali- 
ties of the fossils. He takes pleasure in mentioning that the publi- 
cation of both of these great works has been aided by grants from 
the Royal Society. 
The organic remains of the Devontan rocks, arranged in natural 
classification, occupy an elaborate table of 106 pages. Their localities 
* Ann. & Mag. Nat. Hist. ser. 4, vol. iii. (1869) p. 314. 
