TALITRUS. 
13 
A MPII IP 0 DA . ORCHESTIIDJS. 
SALTATOMA. 
Genus — TALITRUS, Latreille. 
Generic character. Superior antennae short and rudimentary. 
Inferior antennae with the basal joints fused into the facial 
wall of the cephalon. Mandibular palpi obsolete. Maxillipedes 
not unguiculate. First pair of gnathopoda simple ; second pair 
small and feeble. Coxae of third pair of pereiopoda as deep as 
the coxae of the second, and divided into two equal lobes. Telson 
rudimentary.*' 
The eyes are near the top of the head. The superior 
antennae are very short, not reaching to the extremity of 
the second free joint of the inferior. Inferior antennae 
with the two basal joints absorbed into the frontal wall 
of the head. Fingers of the foot-jaws not unguiculate. 
First pair of legs not having a subchelate hand in either 
sex : second pair of legs smaller than the first pair, and 
imperfectly subchelate in both sexes. Coxae of the fifth 
pair of legs subequally bilobed, and nearly as deep as the 
coxae of the preceding pair. Middle scale of the tail 
rudimentary or single. 
The genus Talitrus was first proposed by Latreille in 
his “ Precis ” (1796), under the name of Gammarus , for 
the reception of the Amphipoda with short upper an- 
tennae ; the remainder, with longer upper antennae, being 
arranged in his genus Carcinus. The name Talitrus itself 
* The structural terms employed in the short generic and specific characters 
of the Amphipoda are those proposed by Mr. Spence Bate in his ‘ ‘ Report on 
the British Edriophthalma,” published in the Reports of the British Asso- 
ciation for 1855. In the text the ordinary English names of the various 
parts are adopted, as given in the Table of External Organs in page 3. 
