PLATE XIIa. 



Palinurid^e — Development. 



Fig. I. Brephalos of Palinurus vulgaris, extracted from the ovum; magnified twenty- 

 five times (p. 89). 



„ 2. Brephalos of a Palinurus (?),taken offSamboangan ; magnified twenty-eight times 

 (p. 90). 



„ 3. Phyllosoma of a Panulirus (?), taken off the Celebes Islands; magnified nine times 

 (p. 91). 



„ 4. Cephalon of fig. 2; a, a, bases of ophthalmopoda ; b, b, bases of first pair of 

 antennae ; c, c, bases of second pair of antennas. 



