CARCINOLOGICAL STUDIES. 41 



Measurements : Samoa. Banda. 



Distance between the external or- 

 bital angles 18% iinm. ll^/^ mm. 



Length of the cephalothorax . . llVj » 10% » 



» » » larger hand ... 28 » 27 » 



Length of the meropodites of the 



last pair of legs GVg » 6% » 



Breadth of the meropodites of the 



last pair of legs 2 V5 » 2 V5 » 



I add the dimensions of the Paris type of Gelas. Latreillii : 



Distance between the external orbital angles 22^/g mm. 



Length of the cephalo thorax IS'^ » 



Length of the larger hand 37 » 



)) » » fingers of the larger hand . . 25 » 



)) » » meropodites of the last pair of 



legs 9 » 



Breadth of the meropodites of the last pair of 



legs 4V4 » 



The meropodites of the ambulatory legs are rather con- 

 siderably enlarged in Gelas. Latreillu^ being only twice 

 as long as broad; they are less enlarged in Gelas. Gai- 

 mardi and in Gelas. aiinulipes , whereas those of Gelas. 

 lacteus are still narrower , as they are almost four times 

 as long as broad. 



19. Gelasimus c h I r p ht h a I mu s Latr. 



Gelasimus chlorophthalmus , Latreille; H. Milne Edwards, Hist. 

 Nat. des Crustacés, T. II, 1837, p. 54, and in: Annales des Sciences 

 Natur. T. XVIII. 1852, p. 150, PI. 4, fig. 19. 



Nee: Gelas. chlorophthalmus ., Hilgendorf, in: Monatsberichte der 

 königl. Akad. der Wissensch. Berlin, 1878, p. 803. 



Two specimens , a male and a female , were presented 



Notes from the Leyden Museum, Vol. XIII. 



