66 THE AMERICAN NATURALIST. (Vor. XXXVI. 
but as nearly as can be counted the number of rays is about four 
hundred. The long spines on the head do not show in the picture. 
The species of Regalecus have never been defined, and the present 
one can hardly be certainly identified. It may be the New Zealand- 
Japanese-Indian species, Regalecus russelli or argenteus. 5.8. T. 
Notes on Recent Fish Literature. — In the Annotationes Zoologice 
Japonenses (Vol. IV, Pt. I), Dr. S. Hatta has a review of the Japa- 
nese lampreys, with notes on their local distribution and their ana- 
tomical structure. The new species, Lampetra mitsukurii Hatta, 
already characterized by Dr. Jordan, is here described. In another 
note Dr. Hatta discusses the metameric segmentation of the meso- 
blast in the lamprey and the lancelet. In the earlier stages the 
segmentation in the lamprey agrees with that of the lancelet ; in its 
later stages with that of the higher craniota. 
In the Atti de la Società di Naturalisti, etc., of Modena, Dr. Luigi 
Facciolà continues his valuable series of studies of the development 
of the larvz of different forms of eels. These larva, known as Lep- 
tocephali, are ribbon-shaped, translucent, and soft, with very small 
heads. In their further development they undergo a shrinkage in 
size, attaining greater compactness of substance. 
In the Proceedings of the United States National Museum (Vol. 
XXIV, pp. 33-132), Jordan and Snyder continue their series of 
monographic reviews of the fishes of Japan. Of the gobies, 57 spe- 
cies are described, representing 33 genera. Of these species, 21 are 
new and are here represented in the excellent drawings of Mrs. 
Chloe Lesley Starks. 
We may here note that the generic name Chasmias, proposed by 
Jordan and Snyder for a genus of gobies in 19oo (page 76 1), is ante- 
dated by Chasmias Ashmead, a genus of Ichneumon flies published 
on page 17 in the same volume of the Proceedings. The genus of 
fishes, type Chasmias misakius, may receive the new name of Chas- 
michthys Jordan and Snyder. I am indebted to Mr. W. H. Ash- 
mead for calling attention to the prior establishment of his genus. 
Of sea horses, pipefishes, and their relatives, nineteen species are 
described from Japan. Of thet seven are described and figured as 
new. The sea horses exist in espe cially large number and pur 
. along the headlands | washed by « the warm “ Black cc o 
; “ Kuro Shiwo.” 2 


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