PALAEMON ORNATUS. 469 



every age , of this widely distributed species from Andaï (New- 

 Guinea), Gebeh, Morotaï, Halmaliera , Amboina, Teruate, 

 Flores, Xulla-Bessy, Goroatalo (Celebes) and from the 

 island of Reunion , besides two large specimens collected 

 by Mr. Forsten in the Molluccas. 



These specimens present some little differences and pecu- 

 liarities , and therefore it will be useful , I believe , to give 

 a description of each of them. 



The largest specimen , a male , collected by Mr. Forsten 

 in the Moluccas, has a length of 160 mm.; the second 

 pair of legs are equal in size , being 250 mm. long of 

 which the arm has 52 mm., the wrist 45 mm., the palm 

 75 mm., and the fingers 45 mm.; the fingers are armed 

 with the typical teeth (one tooth on the moveable finger 

 and two teeth on the immoveable) , and are much curved , 

 especially anteriorly. The rostrum projects beyond the end 

 of the peduncle of the internal antennae, but it is shorter 



than the scale of the external antennae, and — dentate. 



There are nine specimens from the island of Xulla-Bessy 

 in the collection ; in these specimens the rostrum is as long 

 as, or a little longer than the peduncle of the internal 

 antennae. A male having the length of 92 mm., has 

 the legs of the second pair almost equal in form and longer 

 than the body, for they are 120 mm. and 105 mm. long 

 respectively, the two fingers of both legs being armed 

 with the ordinary teeth. Another male, on the contrary, 

 100 ram. long, has the legs of the second pair very une- 

 qual in size, the larger 140 mm. with curved fingers and 

 strong teeth , the smaller one 90 mm. with closely-united 

 fingers which are armed only with extremely subtile 

 teeth. In a young female of the length of 68 mm., 

 the second pair of legs are 43 mm. long , the fingers 

 being as long as the wrist and shorter than the palm. — 

 The single specimen from Gebeh is a young female of the 



length of 78 mm.; the rostrum reaches to the end of the 



7 

 peduncle of the internal antennae , being — dentate ; the 



Notes from, the Leyden IMuseuxn. 



