NO. 2280. THE NEW COPEPOD FAMILY SPUYRIIDAE— WILSON. 575 



antennae are distinctly three-jointed, and in addition to the other 

 two pairs of nauplius appendages there are three pairs of mouth 

 parts, tAvo pairs of sAvimming legs, and the rudiments of an abdomen. 

 This shows at least that the larva does not issue from the egg as a 

 nauplius, like the Lernaeidae, but that it passes the nauplius and met- 

 anauplius stages inside the egg and comes forth in one of the copepo- 

 did stages like the Lernaeopodidae. Such a larval development sepa- 

 rates the present family so much the more distinctly from the Ler- 

 naeidae. 



Remarks. — Some doubt has been expressed by Stebbing and others 

 whether Kr0yer's species was distinct from laevigafMtn. The finding 

 of the male and the appendages of the female, with the details here 

 given, will serve to strengthen its validity. The female may be 

 recognized by the prominent head projecting from the anterior 

 margin of the cephalothorax by the general shape of the latter, and 

 by the details of the appendages. 



SPHYRION LAEVIGATUM Guerin-Meneville. 



Chondracanthe lisse Quoy and (Iaimard, Preycinet's Voyago. 1824,. Zoologio, 



Atlas, pi. 86, fig. 10. 

 Sphyrion lisse Cuvier, Le R&gne Animal, 1S30, vol. 3, p. 257. 

 Sphyrion laevigatus Guerin-Meneville, Iconographie Zoophytes, p. 11, pi. 9, 



fig. 4. — Milne Edwards, Ilistoire Naturelle des Crustac6s, 1840, vol. 3, p. 



526. — Cuvier, Le R§gne Animal, edition illustr^e, Zoophytes, p. 02-63, pi. 32, 



figs. 4 and 4a. 

 Sphyrkm loeris Steenstrup, Oversigt Videnslv. Selsk. Kjohenhavn, 1869. p. 



202, pi. 2, figs. 4a and 4&.— Thor. Ann. Sci. Nat., 1900, ser. 8, vol. 11, p. 278, 



pi. 17, figs. 1, 2, 4, 7-9 ; pi. 18, figs. 3, 5, 6, 14. 

 Lesteira krfiyeri THO?.rpso>:, Trpns. New Zealand Inst., 1890, vol. 22, p. 370, pi. 



28, figs. 4 and 4a. 

 Sphyrion laevigatum Stebbing, Cape of Good Hope, Dept. Agriculture, 1900, 



p. 60, pi. 4. — QuiDOB, Archiv. Zool. exp^r. et gen., 1912, ser. 5, vol. 10, p. xl, 1 



text fig. — Brian, Bull. Inst, Oceauog., 1917, no. 324, p. 3, 2 text figs. 

 Sphyrion austraUcus (?) Thor, Ann. Sci. Nat., ser. 8, vol. 11, 1900, p. 280. 

 Sphyrion dclaf/ci (?) Quidor, Archiv. Zool. exp§r. et gen.. 1912, ser. 5, vol. 10, 



p. xli. 

 Sphyrion stevarti (?) Quidor. Archiv. Zool. exp§r. et gen., 1912. ser. 5, vol. 10, 



p. xlii. 

 Sphyrion kingi (?) Cunningham, Trans. Linn. Soc. London, vol. 27, 1871, p. 501. 



The following description is adapted from Thor, 1900, cited above. 

 The cephalothorax (hammer) is 14r-li^ mm. long (transversely), 

 4-6 mm. wide, and 3-4 mm. thick. On the ventral surface at the 

 anterior margin are two large recurved processes, which Kr0yer in- 

 terpreted in Inmpi as anterior antennae, but which Thor suggests 

 may be mandibles (?). On the dorsal surface beneath the skin are 

 a pair of small hooks, regarded as rudimentary antennae. Near the 

 mouth on the ventral surface are two large papillae and two much 

 smaller ones, regarded as rudimentary mouth parts. The ends of the 

 62055— 20— Proc.N.M.vol.55 38 



