478 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxxv. 



Triakis semifasciatum Grirard. Tlic leopard or cat shark. 



Achtheinus oblongus, new species, from the outside surface and 

 possibly from the tins. 

 Urolophus halleri Cooper. The round sting ray. 



Trebius tenuifurcatus Rathbun, from the outside (upper) 

 surface of the body. 



BIBLIOGRAPHY. 



L850. Baied, W. The Natural History of the British Entomostraca. Printed 



for the Pay Society, London. 

 1852. Dana, J. D. Conspectus Crustaceoruru quae in Orbis Terrarum circum- 



navigatione, Carolo Wilkes e Classe Reipublice Federatse I nice, lcxit 



et descripsit Jacobus 1). Dana. 

 1852. Dana, J. D. Crustacea of the United States Exploring Expedition during 



the years L838, 1839, 1840, 1841, 1842, under the command of Charles 



Wilkes, U. S. N., XIII, Part 2. 



1904. Gabd, Peiir. Parasit-Copepoder i Finland. Acta Societatis pro Fauna 



et Flora Fennica, XXVI. No. 8. 



1883. Gisslee, C. F. A new Parasitic Copepod Crustacean, American Natural- 

 ist. XVII. 



1S65. Heller, C. Reise der Oesterreichischen Fregatte Nbvara in den Jahren 

 L857, 1858, und 1859, Zoologische Theil, II, Part 3, Crustaceen. Wien. 



1863. Keoyee, H. Bidrag til Kundskab om Snyltekrebsene. Naturhistorisk 

 Tidsskrift, Tredie Raekke, Amlet Bind. 



1840. Milne Edwards, II. Histoire Naturelle des Crustaces, III. Paris. 



1776. Mullee, ( >. F. Zoologie Danicae. Havniae, 177<i. 



1887. Rathbun, Richabd. Description of New Species of Parasitic Copepods 

 belonging to the genera Trebius, Perissopus, and Lernanthropus, Pro- 

 ceedings of the U. S. National Museum, X. 



1874. Smith, S. I. Crustacean Parasites of Fresh-water Fishes. Report of 

 the U. S. Fish Commission for 1872 and 1873, Part 2. 



1877. Vogt, Carl. Recherches Cotieres: second Memoire, Geneva. 



L902. Wilson, C. B. North American Parasitic Copepods of the Family 

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1905. Wilson, C. P>. North American Parasitic Copepods belonging to the 



Family Caligidse : Part 1, The Caliginse, Proceedings of the F. S. 

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EXPLANATION OF PLATES. 



Plate LXVI. 



The male and female of Chondracanthus epachthes, new species. 



Fig. 1. Dorsal view of female. Fig. 2. First and second antennae. Fig. 3. 

 1'i ist antenna more highly magnified. Fig. 4. Mouth parts, the mandibles being 

 concealed beneath the upper lip. Fig. 5. Mandible. Fig. <'». Maxilla. Fig. 7. 

 Second maxilliped. Fig. 8. Lateral view of male. Fig. 9. Mandible of male, the 

 same magnification as li:,'. 5. Fig. in. Second maxilliped of male. 



