No. 447 ] BREEDING HABITS OE CRAVF/S//. 195 



minutes the claws get fastened to the egg stalk again so thai 

 larva is a second time moored fore and aft ; b\ llic c laws to 

 egg stalk and by the telson to the old shed which in lurn is ; 

 fastened by its empty claw skins to the egg stalk. I hcrc 

 thus two real claws and two empty casts ot claws lasU-nci 

 the egg stalk close together. The new claws arc still ivc ur 

 at the tip but it did not appear that the lai-\a- were always 

 firmly fixed that they could not get away or at least be rat 

 easily pulled off during the six days that this stage continue.^- 



This moulting was found to take i)lace also when the I 

 larvae were removed from the mother and kept 24 honr- 

 running water so that the usual protection ot the mother is 

 absolutely necessary for the future development. 



The young in this second stage are about 4 A mm. long 

 have the form represented in Fig. 10. The head ihora.^ 

 more elongated and crayfish-hke in form. The rostrum tho 

 bent down between the eyes is much more ])rominent and w 

 seen from above it has the characteristic lateral spines, 

 large eyes are prominently stalked. The antcnnules and antei 

 which have some thirty segments, are carried out in tront oi 

 animal and moved about as if of use. 1 he abdomen still e 

 in a bluntly rounded telson with no sixth pleopods as yet i 

 but these wide lateral appendages may be seen m bags or c: 

 within the lateral part of the larval telson. The whole bod 

 darkened by very numerous golden red pigment cells which 

 so crowded at the tips of the big claws that these are consj 

 ously crimson tipped. The yolk-coU)red area is reducec 

 extent and dorsally divided into separate right and left a 

 posterior to end of which is a large green area. ( )n eithei 

 of the stomach a blue area adds to the complexity ol 

 above region. The animal still remains somewhat trnti^lu, 

 and blood corpuscles can be seen in })laces. In the 

 corpuscles pass from end to end, a distance oi about 2 mm. m a 

 few seconds. The legs bear conspicuous hairs not shown in the 

 figure. 



When these second lar^-ae are taken away from the m.)ther 

 they scramble over one another in heaps and do not walk alone, 

 though if forced apart they can stand upon their legs and walk 



itenn;e the 



