Vol. X, No. 9.] AmpMpoda from the Lake of Tiberias. 363 



[N.S.] 



waters of Syria. It was first obtained by Dr. T. Barrois and 

 described by Chevreux (1895), who records it from several 

 places in Syria, but not from the L. of Tiberias itself. Curiously 

 enough, Dr. Annandale's specimens confirm this distribution. 

 Though found in the fountain at Ain-et-Tineh I have not detec- 

 ted a single specimen among the Amphipoda collected on the 

 shores of the lake itself. 



Family Talitridae. 



Orchestia platensis, Kroyer. 



0. tiberiadis, Lortet, 1883. 



Localities: Lake Tiberias, under stones at the edge of the 

 lake on the west side, and just above the water-level of the 

 lake, on the south side, under damp stones— common. 



The females were carrying young at the time of their 

 capture, October. This species was first recorded from 

 L. Tiberias by Lortet under the name of 0. liberiadis. Chev- 

 reux (1895)^ in recording the species again from Syria showed 

 that Lortet's species was synonymous with the earlier species of 

 Kroyer. It is a very widely distributed form, known from the 

 Atlantic shores of North and South America, Bermudas, and 

 the shores of the Mediterranean. 



ISOPODA. 

 Tribe ASELLOTA. 

 Family Asellidae. 



Asellus coxalis, Dollfuss. 

 A. coxalis, Dollfuss, 1892 and 1894. 



Localities: Ain-et-Tineh, L. Tiberias, under stones in small 

 pool— fifteen. Mejdal, L. Tiberias, under stones— twelve. 

 Under stones at the edge of the lake, near Tiberias— three. 



Dr. Annandale obtained no specimens from the south and 

 west shores of the lake, but on the north-eastern shores it is 

 apparently quite abundant. A- coxalis is a small species, the 

 males reaching only 5 mm. in length and are, on the average, 

 larger than the females. It was first described by Dollfuss 

 (1892) from specimens collected in Palestine by Dr. T. Barrois 

 and again recorded by the same author (1894) from the mate- 

 rial brought home from the same part of the world by Dr. 

 Festa. It is not known outside Syria. 



It appears to me to be very nearly related to the common 

 species, A. aquaticus, differing mainly in its smaller size and 

 the less pronounced sexual difference in the form of the first 



