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SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 92 



the coxopodite and the basipodite, and the other at the " knee " joint 

 between the meropodite and the carpopodite. Hence there are typically 

 three segments between the basal joint and the " knee " joint, and three 



Fig. 19. — ^Appendages of Michtheimysis stenolepis. 



A, the mandible. 



B, the first maxilla. 



C, the second maxilla. 



D, the first maxilliped. 



Bspd, basipodite; Crpd. carpopodite; Cxpd, coxopodite; Dcpd, dactylopodite ; 

 End, endite ; Eppd, cpipodite ; Expd, exopodite ; Elb, flabellum ; Iscpd, ischiopo- 

 dite ; Mrpd, meropodite ; Prpd, propodite ; Prtpd, protopodite. 



more beyond the " knee " joint. When fewer segments occur in either 

 section, we may know that the leg is not entirely typical. For instance, 

 in the second maxilliped of the amphipod (fig. 23 A), only two seg- 



