. 1.— Cambarus viae-viridis Faxon. o,formI. St. Francis R., Greenway, Ark., Aug., 1894. 
. 2.— Epistoma of the same. 
. 3.— Antennal scale of the same. 
. 4.— Gonopod of the same, inner side. 
. 4a.— Gonopod of the same, outer side. 
. 5.— Right cheliped of the same. = 
. 6.— Annulus ventralis of the female Cambarus viae-viridis. 
PLATE 6. 
M. C. Z., No. 7,336. 
