REPORT ON THE AMPHIPODA. 991 



says that it "has not any inner plate, but only a very little apically bifid tooth, situated 

 on the inner side." J. S. Schneider in 1884, describing the same species, says of the 

 right mandible that " the spine-row consists only of two curved spines serrate on one 

 edge." Boeck mentions neither the two spines nor their equivalent, the bifid tooth. Of 

 his own species, Pardalisca abyssi, he says that the mouth-organs are the same as in 

 Pardalisca cuspidata. Schneider observes that in Boeck's De Skand. og Arkt. Amph., 

 pi. xii., the figure (5^) which is numbered as representing the second maxilla) of 

 Pardalisca cuspidata in fact belongs to Syrrhoe crenulata. He also remarks that 

 in Pardalisca cuspidata the telson is not, as stated by Kroyer and Boeck, cleft to the 

 base, but only for three-quarters of its length. 



Genus Pardalisca, Kroyer, 1842. 



184-2. Pardalisca, Kr0yer, Naturh. Tidsskr., Ed. iv. Heft 2, p. 153. 



1852. „ Dana, U.S. Explor. Exped., vol. xiii. pt. ii. p. 912. 



1859. „ Bruzelius, Skaud. Ampk. Garum., p. 101. 



1862. ,. Spence Bate, Brit. Mus. Catal. Ampk. Crust., p. 158. 



1865. ,, Goes, Crust. Ampk. maris Spetsb., p. 13. 



1865. „ Lilljeborg, On the Lysianassa magellanica, p. 18. 



1870. ,, Boeck, Crust, ampk. bor. et arct., p. 71. 



1870. „ Malm, Ofversigt af Kongl. Vet.Akad. Fork., p. 547. 



1874. ,, Buekkok, Die zweite deutsehe Nordpolarfakrt, p. 306. 



1876. „ Boeck, De Skand. og Arkt. Ampk., p. 481. 



1884. ,, J. S. Sckneider, Crust, og Pyen. Kvsenangsfjorden, p. 109. 



18S6. „ Gerstaecker, Bronn's Klassen und Ordnungen, Bd. v. Abtb. ii. p. 508. 



For the original definition of the genus, see Note on Kroyer, 1842 (p. 199). Boeck 

 defines it as follows : — 



" Mandibles. — The right mandible apically armed with four strong teeth ; the left 

 mandible furnished with weak teeth. 



" Maxillipeds with the outer plate broad but short, not very prominent ; the inner 

 plate wanting. 



" The Upper Antennas longer than the lower ; the peduncle very short. 



''Lower Antennae with the jjeduncle not very elongate. 



" First and Second Gnathopods with the wrist more or less dilated ; the hand narrow 

 and not subcheliform ; the finger (unguis) broad. 



" First and Second Perieopods with the third joint dilated, but tolerably short ; the 

 fourth joint ovate, the finger laminar. 



The Third, Fourth, and Fifth Peraeopods not very elongate." 



The statement, that the upper antennae are longer than the lower, cannot be worth 

 retaining, since Boeck himself says of Pardalisca abyssi that the upper antennae are 

 slightly shorter than the lower. 



