PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 123 



6. HIPPOCAMPIDJE. 



9. Hippocampus aiitiquorum Liun. — Sea Horse. 



A single specimen was received from Mr. Steams, No. 21,335 (15). 

 The Museum possesses another, Ko. 0,933, from Pensacohi, received 

 from an unknown contributor. 



In Xo. 0,933, a female, the head is contained 5i times in total length. 

 There are 12 body rings and 31 caudal rings. 



No. 21,335, a female, is a dried specimen in bad order, which appears 

 to agree essentially with No. 0,933. It has 12 body rings and 33 caudal 

 rings, and 19 rays in the dorsal. 



7. SYNGNATHIDJE. 



10. Syngnathus sp. 



A single individual, too young for identification, was sent by Mr. 

 Stearns. 



8. SOLEIDJE. 



11. Achirus lineatus (Linn.) Cuvier. — "Flounder." 



Two specimens w^ere received. These are remarkable in the fact that 

 the ventral surfaces are immaculate, while all specimens of this species 

 from the Eastern and Middle States are strongly maculated with black 

 or brown, exce^it a few from the Potomac River. Others from the Poto- 

 mac are maculated. How is it with the species on the South Atlantic 

 coast •? 



No. 21,490 (a). D. 54 ; A. 43 ; P. ; Y. 4 ; C. 10. L. lat. 78. 



No. 21,490 (h). D. 58 j A. 43 ; P. ; Y. 4. L. lat. 70. 



9. PLEURONECTID^E. 



12. Cithariclitliys spilopterus Giintlicr. 



fF CUliarlclithys mierostomus Gill, Proc. Acad, Nat. Sci. Phila. 1864, ji. 223. 



An individu.d, No. 21,500, from Pensacola, Fla., Silas Stearns, 5 inches 

 in length. D. 78 ; A. 54 : P. I, 10 ; C. 17 ; Y. 0. L. lat. 47 ; L. trans. i|. 



No. 18,054, an individual 3f inches long, was received from mouth 

 of St. John's Eiver, Fla., through Pro£ S. F. Baird. D. 81 ; A. 04 ; P. I, 

 8; 0. 17 ; Y. 0. L. lat. 47 ; L. trans. f|. 



Giinther's types, from Babia, Santo Domingo, New Orleans, Jamaica, 

 and West Africa, had the following radial formulie : D. 70-7S ; A. 00-03 ; 

 L. lat. 47-50. Gill's type, from Beesley's Point, had the following : D. 

 81 ; A. 58 ; C. 18 ; P. 10 ; Y. 0. L. lat. 42 ; L. trans. \i ?1 



Our specimens agree very satisfactorily with both diagnoses, except 

 in the number of transverse rows of scales, as given by Gill. 



13. Pseiidorhombus dentatus (Liun.) Giintlior. — Flounder. 



Two specimens. No. 21,340 (21), were received. That the Flounder of 

 the South cannot be distinguished from the supx)osed different si^ecies 



