1034 THE VOYAGE OF H.M.S. CHALLENGER. 



Family Ampeliscid^e. 



In 1856 Spence Bate made the Tetromatides the third subfamily of the Gammaridse, 

 with the sinole semis Tetromatus; in 1857, finding that Tetromatus was identical with 

 Am/pelisca, he altered the name of the subfamily to Ampeliscades. A paper by Costa, 

 of which a preliminary notice had appeared in 1853, was given to the world in full in 

 1857 ; in this paper the Ampeliscini were the first subfamily of the Gammaridei, and to 

 it Costa assigned the genera Am/pelisca and Araneops, which are in fact one and the 

 same, but he also noticed that Haploops, Liljeborg, ought to be placed in the same 

 group. In 1861 * Bate and Westwood call the subfamily Ampeliscides, including in it 

 the genera A mpelisca and Haploops. In 1865 Lilljeborg made the Ampeliscina the 

 ninth subfamily of the Garnniaridae, with the same two genera. Boeck in 1870 placed 

 the Ampeliscinse as the sixteenth subfamily of the Gammaridse, adding Byblis as a third 

 genus. With the same genera and with the definition unaltered, in his subsequent work 

 Boeck changed the subfamily into a family, with the name Ampeliscaidae, which he placed 

 fifth in his arrangement of the Amphipoda Gammarina. In 1882 Sars writes the name 

 Anipeliscidse instead of Ampeliscaida?. In 1886 Gerstaecker adopts the title "Ampelis- 

 cina, Sp. Bate " for the fourth subfamily of the Gammaridse. The following is the 

 copious definition which Boeck gives of the family : — ■ 



" Upper Lip broad, apically little arcuate. 



" Mandibles like one another, apically broad, dentate ; the accessory plate also much 

 dentate ; the molar tubercle very prominent ; spines of the spine-row numerous, long, 

 strong, and apically more or less furcate and sometimes (partim) serrate ; the palp more 

 or less elongate, three-jointed. 



" Lower Lip very broad ; the inner plate broad. 



" First Maxillm with the inner plate long, but not broad, apically furnished with a 

 few plumose setse ; the palp two-jointed, apically armed with a few strong teeth and spines. 



" Second Maxilla? with the outer plate longer and sometimes (partim) broader than 

 the inner. 



" Maxillipeds robust ; the inner plate elongate ; the outer large, armed on the inner 

 margin with broad teeth, apically with curved spines. 



" The body elongate, deep, compressed ; the side-plates tolerably large or of moderate 

 size, with setse on the lower margin ; the head apically produced ; the eyes two (?) or 

 four, simple. 



"The two hinder [fifth and sixth] segments of the pleon coalesced. 



" Upper Antennas with a long flagellum, without accessory flagellum, attached to the 

 apex of the head. 



1 In explanation of the fact that Bate and Westwood in 1861 give references to the Brit. Mm Cat. Amph. Crust, ol 

 1862, it will be remembered that the two works were being produced simultaneously and practically by the same 

 author. 



