REPORT ON THE AMPHIPODA. 485 



expanded, triangular rostrum ; constricted behind the eyes into a short, narrow neck. 

 Superior antennae with the peduncle three-jointed; in the female straight. First and 

 second pairs of thoracic legs small, chelate, the fourth joint broad and long, the fifth short 

 and narrow. The last three pairs of legs with the basal joint narrowly dilated ; the seventh 

 pair diminutive. The sixth segment of the abdomen long and narrow. Caudal appendages 

 long and linear. Telson short, triangular." The type species, Calamorhynclms pelhicidus, 

 n. s., is described from a female specimen, the head and second thoracic foot being figured. 

 Rhahdosoma ichitci, Sp. Bate, and "Ehabdosoma armatum (Edw.), Adams and White," are 

 figured and described, two species which Claus unites as identical. Rhahdosoma armafum, 

 Sp. Bate, is curiously treated by Dr. Streets as a separate species, to which he gives 

 " provisionally the name Rhahdosoma Jomjirostris (Bate)," although he recognises that 

 Spence Bate took his description and figure from the same specimen that furnished White'.s 

 figure. 



1878. UhLEE. 



Chesapeake Zoological Laboratory. 1878. p. 26. 



Two Amphipoda {Gammarus sp. 1 and Caprella geometrica, Say), along with other Crustacea, 

 observed at Fort "Wool. 



1878. WOODWAED, HeNEY. 



Crustacea. The Encyclopseclia Britannica. Ninth Edition. Vol. VI. 1878. 

 pp. 632-666. 



1878. Zaddach, G. 



Die Meeres-Fauna an der preussischen Kliste beschrieben von Professor G. 

 Zaddach. Erste Abtheilung. Konigsberg, 1878. 31 pages. 



Zaddach here expresses the opinion that the epimera or side-plates of the Amphipoda are parts 

 of the segments, an inheritance from the unarticulated pleura of the Trilobites, and a higher 

 development of these. For the first joint of the leg after the epimera he adopts the term 

 Hiifte, for the second and third Drehgelenk and Schenkel, for the fourth and fifth 

 Schienenglieder, and for the sixth Tarsus. He gives a table to show the differences between 

 the eight species which he has to describe, namely, Talitrus locusta, Gammarus locusta, 

 Melita palmata, Calliope Ixviuscula, Protomedeia pilosa, Pontoporeia femorata, Bathyporeia 

 pilosa, Corojihium longicorne. In 1843, he says, specimens of Coropihrum longicorne and 

 Protomedeia pilosa were taken by Rathie in lake Geserich. Zaddach himself had not 

 been able since to find them in that, or hear of them in any other, inland water of Prussia. 



In describing the family Orchestidse, he calls attention to the " endophragmal arch," which is 

 wanting in other Amphipoda, with a reference to Bate and Westwood, i. p. xvii, fig. 3 ; he 

 says that the maxillipeds bear not two, as in the Gammaridce, but three laminar processes 

 on the three lowest joints, and that they are only five-jointed, because the claw-shaped 

 terminal joint is wanting ; the telson, he says, is wanting. But the telson, though small in 

 Talitrus, is not wanting in this or any other known genus of the Orchestidie, and the 

 fourth joint of the maxilliped-palp, though rudimentary or obsolete in Talitrus and Orchestia, 

 is developed in Hyale and Hyalella ; while, lastly, it is not correct to give as a family 



