366 Journal of the Asiatic Society of Bengal. [Sept., 1914. 



sexes to show this difference. The figure of the male gnatho- 

 pod here given agrees closely with that given by Dollfuss (1897) 

 for this species. I am not aware that so marked a sexual 

 difference in the gnathopods exists in any other European 

 species of Philoscia, though, as Dollfuss points out, analogous 

 differences between the sexes are found in some of the Ameri- 

 can species, e.g. Philoscia bermudensis , Dahl. The inner 

 ramus of the first pleopods in the male is also characteristic. 

 Compared with that of P. muscorum, the distal end is more 

 expanded and truncate, with a prominent spine at the outer 

 distal corner. British specimens of P. couchii agree exactly 

 with those here dealt with. I give, herewith, figures of the 

 inner branch of the first pleopod and the second pleopod of 

 the male, taken from the present specimens. 



Dollfuss (1897) identifies Philoscia longicornis, Budde-Lund, 

 with this species, but Budde-Lund (1909) does not a»ree with 

 this opinion. He suggests that P. couchii is identical with 

 P. cellana, Dollfuss, and that P. longicornis is a distinct 

 species. Moreover, he would appear to suggest that P. couchii is 

 an Atlantic species not found in the Mediterranean region. I 

 would point out that the habitats of P. couchii and P. cellar ia 

 ate quite distinct. The former is alwavs found under stones 

 quite near to water, whereas P cellaria\s a much more terres- 

 trial species, characteristic of caves and grottoes and gardens. 

 On Budde-Lund's own showing, P longicornis is found in close 

 proximity to the sea and therefore in similar situations to 

 f. couchii. I, therefore, accept Dollfuss' opinion that P. couchii 

 and P. longicornis are synonymous. 



P. couchii lias not before been found in Palestine, nor, 

 indeed, m the neighbourhood of fresh water. Hitherto it has 

 onjy been found near the sea, but if Dollfuss' opinion on 

 the identity of this species with P. longicornis be accepted, it 

 has been found at Alexandria, in Egypt, and there seems to me 

 to he no inherent reason against the eastward extension of its 

 geographical distribution implied by the present record from 

 the shores of L. Tiberias. The habitat in which it was found, 

 under stones at the edge of the lake, is exactly the kind of 

 situation in which one would expect it to occur. 



Leptotrichus, sp. 

 Localities ; Under stones near the margin of the lake— eight 



specimens 



Three species of Leptotrichus are known from Syria,- 

 L.panzen , Aud. &. Sav., L. tauricus, B.-L., and L. pulchellus, 

 uoiltuss. The present specimens do not belong to the first of 

 these species specimens of which I examined in the British 

 -uuseum i have, however, not been able to see specimens 

 ot the other two species. I, consequently, do not feel certain 



