LARVAL AND POST-LARVAL FISHES. 
BY C. TATE REGAN, M.A. 
(Assistant in the Department of Zoology, British Museum (Natural History)). 
WITH FIVE TEXT-FIGURES AND TEN PLATES. 
].— Antarctic and Subantarctic Fishes. PAGE 
1. Notolepis and Myctophun . : : : : 125 
2. A new Paraliparis—. : : : : : : ; 129 
3. The Nototheniiform Fishes : : : : ‘ : 129 
II.—Fishes from the Tropical and South Temperate Zones ; : 134 
-III.—Notes and Conclusions. 
1. Pelagic Larvae in Relation to the Distribution of Species. 148 
2. The Recapitulation Theory : : é ; : : 149 
3. Development of the Fins . ; ‘ ; : : 150 
4, Characteristic Features of Pelagic Larvae. ; ; : 151 
5. Systematic Importance of Larval Characters ‘ ‘ eis? 
I—ANTARCTIC AND SUBANTARCTIC FISHES. 
1. NOTOLEPIS AND MYCTOPHUM. 
THE pelagic fishes of the order Iniomi are represented by a very perfect post-larval 
example of the strictly Antarctic Notolepis coatsii and by a series illustrating the 
development of the more widely distributed Myctophum antarcticum. This ranges, 
when adult, throughout the Antarctic, Subantarctic, and South Temperate Zones, 
but the larval and post-larval specimens were all taken in the Subantarctic Zone, some 
to the south of New Zealand, others to the west of Tierra del Fuego. 
Notolepis coatsii, Dollo. (Pl. I, figs. 4, 5). 
A post-larval example, 70 mm. long, is very similar to one figured by Roule 
(Deux. Expéd. Antarct. Frangaise, Poissons, pl. III). It was taken on Dec. 28th, 1912, 
at Station 269, 68° 37'S., 166° 14’ W., surface. The adipose fin is continuous with 
VOL. I. T 
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Jragsomian Instig 
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