572 



rnOCEEDINGS OF THE NATIONAL MUSEUM. 



Dimensiovs of Jnamathia cornuta. 



Types. — No. 21572, U.S.N.M. : five males and two females, from north- 

 east of Indefatigable Island, Galapagos Islands, 392 fathoms, station 



2818. 



13. CHORILIA LONGIPES Dana. 



Chorilia longipes Dana, Amer. Jonr. Sci., 1851, 2(1 ser., XI, p. 269; Crust. U. S. 



Kxpl. Expect., 1852, I, p. 91 ; 1855, pi. i, fig. 5. 

 Ifya-stenus longipes Mieus, Rathhun. 



North of San Olemente Island, California, 414 fathoms, station 2839. 



14. LEUCIPPA PENTAGONA Milne-Edwards. 



Leucippa pentagona Milne-Edwards, Ann. Soc. Entoiu. France, 1833, II, j). 517, 



pi. XVIII, U, figs. 1,2 (jjfln/ajfona). Chile. 

 Leucippa ensenadw Milne-Edwauds and Lucas, D'Orbigny's Yoy. I'Amor. M<^rid., 



1843, VI, Pt. 1, p. 9; 1847, IX, pi. v, fig. 3. Patagonia. 

 Leucippa Inmn Dana, Amer. Jour. Sci., 1851, 2d ser., XI, p. 273; Crust. U. S. Expl. 



Exped., 1852, I, p. 135; 1855, pi. vi, fig. 5. Rio de Janeiro. 



I believe that L. 'pentayonai ensenada', and lewis are one and the same 

 species, as a large series of specimens in the collection from ofittheliio 

 de la Plata (10^ to llj fathoms, stations 27C4-27GG) and from off the 

 Gulf of San Matias, Argentina (52 fathoms, station 2707), show a great 

 amount of variation in the breadth of the carai)ace, prominence of the 

 lateral teeth, and in the acuteness and divergence of the rostral horns. 

 The average individuals are similar to that figured as L. ense^iadw by 

 Milne-Edwards and Lucas. A single small specimen is labeled " Station 

 2833," which is in Magdalen a Bay, Lower California, 51 fathoms. 



15. EPIALTUS DENTATUS Milne-Edwards. 



EplaltuH (lentatHn Milne-Edwakds, Hist. Nat. Crust., 1834, I, p. 345. 

 Port Otway, Magallanes Territory, Chile. 



16. EPIALTUS NUTTALLII Randall. 



Epialtus nuttallii Randall, Jour. Acad. Nat. Sci. Phila., 1839, VIII, p. 109, pi. iii 

 ( Lihiiiia nuttallii). 



Ballenas Bay, Lower California. 



17. TYCHE LAMELLIFRONS Bell. 



Tyche lamellifrons Bell, Proc. Zool. Soc. London, 1835, III, p. 173; Trans. Zool. 

 Soc. London, 1836, II, p. 58, pi. xii, tig. 3. 



Southern part of the Gulf of California, 7 fathoms, station 2825. 



