600 General Netes. [August, 
Inches 
Distance between the spiracles; o, cs 5 0 00.6.3> 3,08) irita x 2% 
i dh Lt 5 EE Rs ree ae ketaka CE at 31 
TANP OF base of Fst dorsali 4. Se Sa eee 2% 
Mennt of Sst dorsales. dinas (860 AN OS 4 
qieueth Of ‘base of 3d. dorsal i- iios dhase sleek smakedaeue 1% 
PACH. OF 20) GOMalsly keii ca beer es ee hie secs aI 2 
Frontal disk to eye: 3. sie oes ae eae en a 244 
Ditto:to anterior edge of spiracles, 2.5.5. cies cesiecedes 24 
Length of Spirachlar Gpening...«.2a..« sings 9 tr oi am wh ei oS I 
The dealers state that this fish attains still larger dimensions. 
Cephaloscyliium laticeps.—This species is one of the most singu- 
lar additions to the fauna of our coast hitherto made. It was 
previously known only from two examples and a skull, all from 
New Zealand. Below Point Conception, Prof. Jordan found this 
curious shark, which has the power of inflating itself after the 
fashion of a balloon fish (Diodon tetrodon) to be the most com- 
mon of its tribe, so common, indeed, that it is largely taken for 
the sake of the oil that can be procured from it.” It attains a 
length of rather more than three feet, and has a very broad head, 
equal in width to one-fourth the total length of the fish. It does 
not inflate its skin, but its stomach, as was experimentally proved, 
and when inflated, floats away upon its back.—W. N. Lockington. 
Spilomyia as an admirable instance of protective resemblance. 
similar example I recorded several years since when I extended 
my net to catch what I supposed to be a white-faced wasp, and 
just before capturing it, found that it was a Syrphus fly (Spilo- 
myia).—A. S. Packard, Fr. ' 
Mate EELS IN Hoittanp.—An article on the reproductive or- 
gans of male eels and the differences between the sexes, is con- — 
tributed to Zoologischer Anzeiger for June 7, by S. T. Cattie, of | 
Arnheim, Holland. He says,“ that it is not to be wondered at at 
male eels are so seldom found, since the young éel finds its way _ 
into deep water; there the reproductive organs rapidly develop — 
(6-8 weeks); they then lay eggs, and the old eels, both female 
and male, die after reproduction. Hence the spermatozoa are 
wanting and in most cases even the mother-cells of the testes, 5°. 
