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THE AMERICAN NATURALIST [Vol. XLII 



Regan gives a synopsis of the sharks, Scylliorhinidae. To 

 Scylliorhinus are referred the species of Catulus, Cephaloscyl- 

 lium and Haldurus. The genus Parmaturus is regarded as 

 identical with Pristiurus. 



In the same journal, Mr. Regan has a review of the sharks of 

 the family of Squalidae. In this the name Spinax is preferred 

 to Etmopterus, because of the inaccuracy of Rafinesque's de- 

 scription. Frontimaculatus of Japan is regarded as identical 

 with the European E. gusillus. The genus Zameus is regarded 

 as identical with Scymnodon. Deania and Lepidorhinus are 

 placed in synonymy with Centrophorus. Deania eglantina from 

 Japan is regarded as identical with the European Centrophorus 

 calceus. The name Scymnorhinus is preferred to Dalatias, 

 because of the very inaccurate description of the genus of 

 Rafmesque. 



In the same journal Mr. Regan describes new loricaroid fishes 

 from South America. 



In the same journal Mr. Regan gives a synopsis of the ces- 

 traciont sharks. He regards the name Heterodontus as pre- 

 occupied by Heterodon, thus accepting the latter name Ces- 

 tracion. He accepts the genus Gyropleurodus as distinct from 

 Heterodontus. 



In the same journal Mr. Regan describes Cichlosoma laurce as 

 a new species from Tampico. Enneanectes carminalis was found 

 at Swan Island, near Honduras — a little blenny hitherto known 

 only from Mazatlan. 



In the same journal Mr. Regan describes a hybrid between 

 the bream and the rudd, with notes on other hybrids among the 

 European cyprinoid fishes. 



In the Proceedings of the United States National Museum for 

 1908, Jordan and Dickerson give an account of fishes obtained by 

 Dr. Jordan at Fiji. The fauna of the islands is essentially like 

 that of Samoa, the physical nature of the reefs being closely 

 identical in the two regions; but even in this small collection 

 are several species which are distinctively characteristic of the 

 New Guinea waters. The deep-bodied mackerel of the Pacific 

 are separated from Scomber to form a new genus, Rastrelliger, 

 differing especially in the very long gill-rakers, the mouth looking 

 as if "full of feathers.' » With this are other characteristics, 

 the teeth being very minute and there being none on the roof 



