49 



Explanation of PiiAXEs. 



Eeference Letters. 



a. antennule. 

 a*- antenna. 



«"■ lateral frontal sucker. 

 ail. anus. 



b. median frontal sucker. 

 bis. blood space. 



c. filament duct. 

 eg. filament gland. 

 en. chitin. 



D. dorsal. 



d. opening of spermatophore. 



e. eyes. 



f. filament. 



g. ganglia. 

 gl. gland 



i. intestine. 



K^ left anchor process. 



if 2 median ,, 



K^ right ,, 



L. left. 



Id. duct of digestive gland. 



Ins. lens. 



Iv. digestive gland. 



31. mouth. 



m. mandible. 

 ml. muscle. 



ml.a. antennule muscles. 

 ml.an. anal muscles. 

 ml./, frontal muscles. 

 Dili, intestine muscles. 

 nil.l. lateral muscles. 

 7nl.m. mandible muscles. 

 ml.mxp. first maxillipede 



muscles. 

 inl.pt. posterior cephalic 



muscles. 

 ml.rt. rectum muscles. 

 ml.st. stomach muscles. 

 mx. first maxilla. 

 mx^- second ,, 

 vixp. first maxillipede. 

 mxp^- second ,, 

 n. nerves. 

 nc. nucleus. 

 0. ovary. 

 od. oviduct. 

 ce. oesophagus. 

 og. optic lobe. 



