570 PROCEEDINGS OF THE NATIONAL ilUSEUM. vol.55. 



SPHYRION STEWARTI Quidor. 



The hammer is entirely lacking and the host is unknown, but the 

 single specimen came from New Zealand. That part of the neck 

 which remains is considerably wider than in any other reported 

 specimen ; the trunk is quadrangular and flattened, and the abdomen 

 is distinctly visible. The posterior processes are branched dicho- 

 tomously and the branches are perpendicular to the surface of the 

 bunch, and their swollen tips are the only things visible. Such 

 slight differences are hardly enough to constitute a valid species based 

 on a single mutilated specimen. 



SPHYRION KINGI Cmminghanv. 



In his Notes on the Crustacea obtained during the voyage of 

 H.M.S. Nassau Cunningham ^ published this new species. He gave no 

 description, but merely said that it differed from laevigatum " in the 

 greater width of the sucking disk (hammer) and of the body, as 

 well as in various other points which will be readily understood by 

 a comparison of the figures of laevigatum and kingi.'''' The figure 

 he gave, however, showed no details save those of the relative shape 

 and size of different parts of the body, and they are not enough to 

 establish his species. 



SPHYRION KR YERI (Thomson). 



Thomson referred this species to Kr0yer's genus Lesteira; it dif- 

 fers from other species chiefly in the shape of the hammer, whose 

 transverse diameter is greater than the entire length of the body. 

 The neck and trunk are hard and horny, and the bunches of posterior 

 appendages are as long as the trunk itself. Taken from the abdo- 

 men of a ling, Genypterus hlacodes^ near New Zealand. Here again 

 the species rests for its validity almost entirely upon the shape of 

 the hammer, and can not be accepted without further proof. 



SPHYRION LUMPI (Kr0yer). 



Plates 50, 51, and 52. 



Lestes lumpi Kr0yer, Danmarks Fiske, vol. 2, 1845, p. 517. 



Lesteira lumpi Kr0yer, Naturhist. Tidsskdift, ser. 3, vol. 2, p. 325, pi. 18, 



fig. 5, 1863. 

 Lesteira lumpi Steenstritp, Overs. Kongel. Danske Videusk. Selsk. For- 



handl., 1869, no. 3, p. 182, pi. 2, figs. 4 and 5. 

 Sphyrion lumpi Bassett-Smith, Proc. Zool. Soc. London, 1899, p. 489. 

 Sphyrion lumpi T. and A. Scott, British Parasitic Copepoda, 1913, p. 164, 



pi. 51, figs. 3 and 4. 



Host and record of specimens. — The United States National Mu- 

 seum contains the following specimens: A single female (Cat. No. 

 42342, U.S.N.M.), from a salted hake; a single female (Cat. No. 



1 In Trans. Linn. Soc. London, vol. 27, 1871, p. 501. 



