TECHNICAL HISTOEY SPECIES. 451 



was brought home by Mr. Gosse", which the folio wiug year* 

 became the basis of his Phoca tropicalis. 



Gray, iu 1850 (Cat. of Seals in Brit. Mus.) recognized eighteen 

 species of Earless Seals, distributed among eleven genera, of which 

 fourteen of the species are doubtless valid. The species t recog- 

 nized are the following : 1. Lohodon carcinojjhaga ; 2. Stoiorhyn- 

 clius leptonyx ; 3. Leptonyx iveddelU; 4. Monachus alhiventer ; 5. 

 Ommatoplioca rossi ; G. Callocephalus vitulinus ; 7. C. Mspidus ; 

 8. C.f^ietida (7 and 8 are the same) ; 9. G. caspicus ; 10. C. dimi- 

 diatiis; 11. C. largha (10 and 11 nominal); 12. Pa gopMlus green- 

 la ndicus ; 13. Phoca harhata ; 14:. PJioca tropicalis; 15. Hal ichce- 

 rus grypus ; 16. Morunga elephantina ; 17. Cystopliora cristata ; 

 18. G. antillariim. The only new names are Gallocephalus dimi- 

 diatus (n. sp., ex Schlegel MS.), and PJioca tropicalis (n. sp.), and 

 the only innovation in nomenclature is MonachuS aJMventer [albi- 

 venter ex Bodd.). 



The same year (1850) Drs. Hornschuch and Schilling,! after 

 an examination of some sixty skulls of Halichcerus, proposed a 

 division of the genus into three species, namely, H. grypus 

 (Fabr. = griseus Nilss.), H. macrorhynchus^ and H.pachyrhynchus, 

 the last two being added as new species. Subsequent writerSj 

 however, have not considered them as entitled to specific recog- 

 nition. 



In 1854 Gray described a specimen of Monachus albiventer 

 from Madeira under the name Heliophoca atlantica, basing on 

 it a new genus as well as new species. 



In 1855 Giebel, in his " Saugethiere" (pp. 129-143), gave a 

 noteworthy account of the animals here under consideration. 

 It is concise and discriminative, and though closely foUowing 

 Wagner, is an admirable exposition of the state of knowledge 

 respecting this group at the date of its i)ublication, nearly a 

 quarter of a century ago. Although dealmg to only a small 

 extent with the bibliography of the subject, the principal syno- 

 nyms of the species are given in footnotes, with generally a 

 brief reference to their character. Th^ species recognized, 



*Cat. Seals Brit. Mus., 1850, p. 28. 



t The synonymy he here gave is suhstantially the same as that of his later 

 (1866) "Catalogue of Seals and Whales", for a notice of which see below, p. 

 453 



t " Kurze Notizcn liber die in der OsCsee vorkommiuden Arten der Gattung 

 JSalichocrus, Nilss. Greifswald, 1850". Abstract in Wiegmann's Archiv fUr 

 Naturgesch., 1851, Bd. 2, p. 22. The original brochure I have not seen. ' 



^Proc. Zool. Soc. London, 1854, p. 43. 



