114 
REPORT ON ZOOLOGY, MDCCCXLII : 
Ranzani, 1. c. iv. p. 76, describes a Qymnothorax funebris, which 
closely resembles the G, afer^ BL, but is unspotted, and comes from 
Brazil. 
Conger opistophthalmus, Ranzani, 1. c. iv. p. 78 ; eyes almost behind 
the corner of the mouth ; lateral lines channelled with angular inverted 
margins. C. brasiliensis, id. ib. p. 79, pi. xiii. f. 1 ; anteriorly four 
conical teeth, laterally teeth in five rows; lateral lines consist, as it 
were, of a row of scars in the skin. C. cylindroideus, id. ib. p. 80 ; 
teeth in two rows ; on each side in front of the snout two tubes, the 
anterior of which has a thread-formed appendix : all three are from 
Brazil. C. rubescens, id. ib. p. 81, from the Mediterranean, has the 
teeth in four rows. 
Eucheliophis, J. Muller (Monatsbericht der Acad, zu Berlin, 1842, 
p. 205) ; no pectoral fins ; the gill clefts on both sides united in the 
middle by the junction of the gill membranes ; the anus is placed much 
farther forward than in the Ophidice, and immediately behind the gills ; 
rays of the gill membrane six. The species, E. vermicularis, Mull., is 
new ; 4" ; the body prolonged posteriorly to a point. 
G. Valentin has published an Essay on the Anatomy of the 
Electric Eel (Gymnotus electricus), in the new Denkschrift 
der allg. Schweizerischen Gesellsch. fur die gesainmten Natur- 
wissenschaften Bd. iv. Neuchat. 1842. 
LOPHOBRANCHII. 
A. DE Quatrefages gives, in the “ Annales des Sciences 
Natnrelles,” tome xviii. p. 193, a Contribution to the History 
of the Development of the SynynatJms ophidian, Linn. 
The author thinks the observation new, that the eggs in this species 
are fixed free under the body. This fact had been already made use of 
by Fries as a ground of division of the genus (v. Archiv. 1838, i. p. 238). 
Only one step in the development has been described, as the author had 
only the eggs of one Fish for examination. 
PLECTOGNATHI. 
Ranzani, 1. c. iv. p. 72, describes two new species of Tetro- 
don, from Brazil. 
The one, T. marmoratus, has two tentacula, and behind them the 
nasal fossae. It is rough on the back, smooth on the sides ; beneath it 
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