l8o A BIOLOGY OF CRUSTACEA 



Wilson, D. P., 96, 97 $-° r S an ' 58 ' * 4 



Wilson, R. C, 165 X " ra y s ' ?° 



woodlice, 94, 95, 96, 105, i47> l 5 2 > l 52> 



worms, 63, no, 112, 116 



J Y-organ, 64, 65, 67 



Yonge, C. M., 81, 83 



Xanthidae, 129 



xanthopterin, 55 . ' 



Xenocorfoma, no Zenkevich, L. A., 154 



Xiphocaridina compressa, 54 zoea > 7 6 » 7/ 



