148 



JFirst annual Beport 



Figure 84. Hyalella azteca 



A, Adult female. B, Maxillipeds. C, First maxilla. D, Mandible. E, Second 

 maxilla. F, Lower lip. G, Second gnathopod of male. H, Second gnathopod of 

 female. I, First gnathopod. J, Second antenna. K, First antenna. L, Second 

 peraeopod. M, Third peraeopod. N, Fifth peraeopod. O, First uropod. P, First 

 pleopod. Q, Second uropod. R, Third uropod. S, Telson. 



