PLATE I. 



Fig. 1. Pycuogomim littorale, 469, male ; dorsal vievs'. 



2. The same ; ventral view. 



3. The same ; a, accessory leg ; h, ambulatory leg. 



4. Achelia spiuosa, 473 ; a, general dorsal view ; b, antenna; c, spine from acces- 



sory leg. 



