1887.] 



ON CTCLESTHERIA HISLOPI. 



65 



Fig. 4. Still later stage of embryo, from above: oe ocellus; 

 gl shell-gland; p posterior pairs of legs; remaining 

 letters as in fig. 1. 



Fig. 5. Same embryo, from left side: first trace of the com- 

 pound eye; p 1 leg of first pair; p n p u legs of llth 

 to 14th pair, still rudimentary ; remaining letters as above. 



Fig. 6. A leg of same embryo, more highly magnified: ep epi- 

 podite; ex exopodite; m maxillar lobe; I — VI the six 

 segments of the stem, or endopodite. 



Fig 7. More fully developed stage of embryo, from right side: 

 ms adductor muscle of the snell; h heart; y> 15 p u the 

 two posterior, as yet rudimentary legs; remaining letters 

 as in fig. 5. 



Plate VIII. 



Fig. 1. Male embryo in last stage, tåken from the incubatory 

 cavity of a gravid female specimen; from right side. 

 magnified about 78 diameters. 



Fig. 2. Right prehensile leg of first pair of same embryo, mag- 

 nified 140 diameters: ep epipodite; ex exopodite; m 

 coxal lobe; I— VI the six segments of the stem. 



Fig. 3. Outer part of endopodite of same leg, more highly 

 magnified. 



Fig. 4. Young female specimen with but two lines of growth 

 on the shell; from left side, magnified about 43 diameters. 



Printed 30. IV. 1887. 



