NO. 1162. liKACHYUIiA COLLECTED li Y THE ALBATROSS— llATHBUN. 573 



i8. TYCHE EMARGINATA White. 

 Ti/che emar^ivata White, Anu. Mag. Nat. Hist , 1817, XX, p. 206. 

 Off Cai)e St. Koque, Brazil, 20 fathoras, station 2758. 



ig. LEUROCYCLUS TUBERCULOSUS (Milne-Edwards and Lucas). 



Salaoia tuberculona Milne-Edwauds and Lucas, D'Orbiguy's Voy. Vkm6x. Mdrid., 

 1843, VI, Pt. 1, p. 13; 1847, IX, pi. ii. 



Off tlie Eio de la Plata, lOJ to 11^ fathoms, stations 2764, 27G5, 27G6. 



20. CHIONCECETES TANNERI Rathbun. 



Chionwcetes tanncri Rathbun, Proc. U. S. Nat. Mus., 1893, XVI, p. 76, pi. iv, 

 figs. 1-4. 



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



21. HEMUS ANALOGUS, new species. 



Outer margin of first movable joint of antenna strongly arcuate. 



This species is so closely allied to Hemus cristulvpes A. Milne Edwards 

 of the Caribbean region that the differences are only comparative. The 

 carapace is higher at the cardiac region and slopes more abruptly down 

 toward the front. The hollow in cristuUpcs on the posterior part of the 

 branchial region on either side of the cardiac region is replaced in 

 analogus by a slightly convex surface. The side margins of the ros- 

 trum are convex; in cri.stulijws straight. The rostral teeth are nearer 

 together in analogus and terminate in a sharp spinule; in aristullpes they 

 terminate in a stout tubercle. The preorbital angle is rounded, with 

 sides rectagular; in cristulipes the anterior margin of this angle is 

 oblique. The outer margin of tlie first movable joint of the antenna 

 is curved, while in cristulipes it is straight, or nearly so, being parallel 

 to the sides of the rostrum. The meral Joints of the ambulatory legs 

 are narrower and their marginal denticles stronger than in the Atlantic 

 species. 



Dimensions. — Female: Length, 8.2 mm; width, 6.5 mm. 



Type.— 1^0. 21573, U.S.N.M. An adult female from the southern 

 part of the Gulf of California, 10 fathoms, station 2828. 



Additional specimen. — One immature female was taken at the same 

 locality. 



22. PELIA ROTUNDA A. Milne-Edwards. 



Pelia rotunda A. Milne-J^dwards, (.'rust. Rdg. Mex., 1875, p. 74, pi. xvi, fig. 4. 

 Off" Cape St. Koque, Brazil, 20 fathoms, and off the Rio de la Plata, 

 10^ to 11^ fathoms, stations 2758, 2764, 2765, 2766. 



23. PELIA PACIFICA A. Milne-Edwards. 



PeUa pacifica A. Milne-Edward.s, Crust. R6g. Mex., 1875, p. 73, pi. x vi, fig. 3. 

 Magdalena 13ay, Lower California, 12 fathoms, station 2831. 



