1918.] Stanley Kemp : Uecapoda of the Inle Lake. 95 



of the thorax. A ureyish spot on each side of the posterior margin of 

 each abdominal segment and above it a bar of the same colour extend- 

 ing across the dorsal surface. Telson irregularly cross-barred ; uropods 

 mottled or clouded." 



" The Intha fishermen deny that they are acquainted with any 

 pra^vns of larger size and state that these are never found in the lake, 

 only in streams and rivers. They say that in cold weather prawns are 

 attracted in large numbers to spots where hot springs flow into the river, 

 but it is uncertain whether their statement refers to this or to the succeed- 

 ing species." 



The larger specimens in the collection, several hundred in number, 

 were obtained alive in the market at Nan-Pan. They were said to have 

 come from Sizon in the Tang-do circle of Yawnghwe State in the river 

 that runs south from the Inle Lake. A small specimen was obtained 

 in a spring of slightly warm water close to Fort Stedman, within about 

 half a mile of the lake. The types bear the number 9777/10, Zool. Surv. 

 Ind. 



Palaemon hendersoni, de Man. 



1907. Palaemon {Parajwlaemon ?) hendersoni, de Man. Trans. Linn. Soc. Zool. 



(2), IX, p. 446, pi. xxxiii, figs. 66-68. 

 1010. Bitlnjnis {Parafinlaemon) hendersoni, Rathbun, Bull. J\Ius. Comp. Zool., 



Harvard, LII, p. 316^ pi. v, fig. 3. 

 1913. Palaemon hendersoni, Kemp, Pec. Ind. llus.. VIII. p. 303, pi. xix, figs. 



19-23. 



Four specimens of this species were obtained by Dr. Aimandale in 

 the He-Ho stream, Yawngwhe State, at an altitude of 3800 ft. The 

 largest iiidividual is a full grown male 65 mm. in total length and with 

 carapace 19 mm. in length. 



The rostrum is longer than in typical specimens from the Darjiling 

 district, reaching a little beyond the end of the antennular peduncle. 

 It bears from 9 to 11 dorsal teeth, of which 3 (in one case only 2) are on 

 the carapace. There are in each case 3 ventral teeth. 



In the large male the longer chelipede of the second pair is about 

 60 mm. in length, extending beyond the apex of the antennal scale by 

 the chela and one half of the carpus. The ischium is 10 mm. in length, 

 the merus 11 mm., the carpus 9 mm., the palm 16-7 mm. and the fingers 

 15-4 mm. The carpus is 4-4 mm. broad at the distal end and the palm 

 6-0 mm. in breadth and 4-9 nim. in thickness. In this individual, as 

 well as in a smaller example only 40 mm. in total length, the fluting of 

 the fingers of the second peraeopod is clearly shown. 



In the length, number and position of the rostral teeth the Inle 

 specimens differ slightly from those described by de Man and from those 

 recorded from the Abor country, and examination of series from the 

 Darjiling district, the Abor country, the Garo Hills and the Swa Reserve 

 Forest in Burma seems to indicate that in respect of the rostrum there is 

 a small but constant difference between Burmese specimens and those 

 from Assam and the Eastern Himalayas. I defer further discussion 

 of this point until I have had the opportunity of examining in detail 

 the large accumulation of unnamed Palaemonidae in the Indian Museum. 



Palaemon hendersoni is usually of an olivaceous colour in life, with or 

 without darker markings. The colouration of specimens from the Dar- 



