X \' I . T E ^I X O C E P H A L I D A E . 



By F. H. GRA\rELY, M.Sc, 

 Assistant Superintendent, Indian Museum. 



(Plate xiv). 



The only representative of this family found by the Abor 

 Expedition was Tonnocephnla semperi, Weber. This species was 

 first found b}' Semper on crabs in Luzon and Mindanao, from the 

 plains up to an altitude of 5000 ft. (1872, p. 307). It has since 

 proved to have a wide distribution in the Oriental Region ; for 

 according to Max Weber, who first described it as a distinct species 

 (1890), it occurs on '' Telphusa'^ ^ spp. in Sumatra.* Java and 

 various parts of Celebes and it has been found both by Dr. Annandale 

 and by myself in the DavA na Hills of Tenasserim. where it occurs on 

 Potamon )nanii and probably also on P. andersonianu))i. Specimens 

 in the Indian Museum collec ion of P. manii from Tavoy, and of 

 P. andersonia}iuni from Yunnan and from the Sheetee (Kakhyen) 

 and Manipur Hills, bear eggs closely resembling those evidently 

 belonging to this species on crabs from the Abor country and 

 Dawna Hills. In the Abor country it is not uncommon on 

 Poiamon adiatretuvi and P . siiperciliosmn,^ and in the absence of 

 any record of another species of Tcmnocephala from Asia, it is 

 probable that the specimen found by Wood-Mason in a bottle of 

 fish from the Dafla Hills (1875, p. 337) was also T. seniptri, and had 

 become associated with the fish accidentally. Mr. Kemp, it may 

 be pointed out, was unable to find any kind of Temnocephala on fish 

 in the Abor country, which adjoins the Daflas, although he was 

 looking for confirmation of this record. The Abor and Dawna 

 records are as follows : — 



Abor Country : Yembung River, 1100 ft , 13-i — 9-ii-i2. 



Lalek stream between Renging and Rotung, 



T0-i-I2. 



Below Damda, banks of Siyom River, i-ii-12. 

 Dawna Hills : Third Camp, western base of hills, ca. 400 ft., 

 30-xi-ii. 

 Misty Hollow, western side of hills ca. 2200 

 ft., 29-xi-ii. 



' i e. Potamon of recent monographs. 



2 I have to thank Prof. Max Weber for sending me some of his specimens 

 frora Sumatra for comparison with the Burmese and Abor specimens, the iden- 

 tification of which they have greatly facilitated. I have also to thank Dr. J. H. 

 Ashworth for specimens of other species with which to compare these. 



£ A new species shortly to be described by Mr. Kemp in this volume. 



