1884 ] Zoology. 207 
dz, with one new species, four Lycodidz, two of which are new; 
and three Sternoptychidz, one of which is new. Most other fami- 
lies are represented by one species only, but include a new species 
of Alepocephalus, Bathysaurus, Halosaurus, and Mettastoma, as 
well as Poromitra capito, a Berycoid fish. Altogether, the list of 
United States fishes receives seventeen additions. W. K. Parker 
has published a memoir with twelve colored plates upon the struc- 
ture and development of the skull in the sturgeons A. ruthenus and 
A, sturio. His conclusions are that we have in the sturgeon a form 
practically intermediate between the Selachians and the Holos- 
tei. The first stages of the cranium are, to’ use his own words, 
“confusingly simple,” and he believes that the vertebral segmen- 
tation of the skull is a comparatively late and secondary spectaliza- 
tion, The same anatomist also, in the Philosophical Transac- 
tions of the Royal Society, gives an exhaustive account, with 
nine plates of sections; etc., of the development of the skull in 
osteus osseus. In comparing the skull with those of Polyp- 
terus and Amia, he says “ Amia is a true Ganoid, and has sev- 
eral unmistakable diagnostics even in its skull, but it comes very 
near to the Physostomous Teleosteans. In the Proceedings of 
the United States National Museum, Messrs. Jordan and Gilbert 
give a review of the American Carangide, with the synonymy 
and geographical distribution of each species. The genera recog- 
nized in the family are only six: Megalaspis, Decapterus, Trach- 
urus, Caranx, Silene, and Chloroscombrus. The artificiality of 
Seneric distinctions generally is to some extent acknowledged in 
the following words: “ This division is not wholly natural, inas- 
Much as the differences between the extremes among the species 
of Caranx are greater than those separating some of these species 
related genera, while, on the other hand, the characters 
vai eas has five American species ; Trachurus is credited with 
wi , 
thers are made sub-genera, has nineteen species, 
ia two, and Chloroscombrus two, making thirty speċies in all. 
the same Proceedings, Dr. T. H. Bean records the first occur- 
Drg Pseudotriacis microdon Capello on the shores of the United 
par: It is a rare species, and was before known from Portugal 
lifes, The example referred to came ashore at the Amagansett 
paca Station on Long Island. Professor Jordan describes a 
terio € of Sidera those species of Muræna, which have the pos- 
the * nostrils without tubes, and the teeth all sharp, and gives to 
W species the name of S, chlevastes. Messrs. Jordan and 
tigma also described a new species of Rhinobatus (R. glaucos- 
peels Mazatlan. In the same Proceedings Miss Rosa Smith 
tides the life colors of Cremnobates integripinnis, and notices 
