(xii) 



REFERENCE LETTERS TO PLATES IV, XII-XV, 

 XLIL and XLIII. 



a. antennules. 



o. ovary. 



a\ antennae. 



od. oviduct. 



an. anus. 



oe. oesophagus. 



b. median frontal sucker. 



os. ovisac. 



c. filament duct. 



p 1 . first pair of feet. 



eg. cement gland. 



p". second pair of feet. 



dg. digestive gland. 



p m . third pair of feet. 



e. eyes. 



p> XT . fourth pair of feet. 



/. filament. 



p v . fifth pair of feet. 



g. ganglia. 



p xl . sixth pair of feet. 



i. intestine. 



rs. receptaculum seminis. 



Is. lateral frontal sucker. 



rt. rectum. 



Ins. lens. 



rtn. retina. 



m. mouth. 



s. stomach. 



md. mandible. 



sbg. sub-cesophageal ganglion. 



mx. first maxilla. 



spg. supra-cesophageal ganglion. 



mx 1 . second maxilla. 



sp. spermatophore. 



mxp. first maxilliped. 



t. testis. 



mxp 1 . second maxilliped. 



u. vulva. 



n. nerves. 



vd. vas deferens. 



Xos. 1-13, Xerve 



3, AS FOLLOWS : — 



1. optic. 



9. first maxillipeds. 



2. antennules. 



10. second maxillipeds. 



3. antennae. 



11. first feet and stomach muscles 



4. mandibles. 



12. second feet and posterioi 



5. lateral frontal margins. 



cephalic muscles. 



6. first maxillae. 



13. third feet, fourth feet, fiftl 



7. second maxillae. 



feet, genital segment, am 



8. lateral cephalic muscles. 



abdomen. 



