PROC. US. NAT. MUS. VOL. 119 



JAMES — PLATE 



Cambarus longulus longulus: a, dorsal view of antennal scale; ;', /, lower surface 



showing extreme variation in setaceous condition; k, m, upper surface of same; h, mesial 

 view of first pleopod of first-form male; i, lateral view of same; p, lateral view of cephalic 

 region of carapace; /, dorsal view of first-form male. C. longulus longirostris: c, dorsal 

 view of antennal scale;/, g, first pleopod of first-form male; n, o, chelae; r, lateral view of 

 cephaHc region of carapace; s, dorsal view of first-form male. C. longulus chasmodactylus, 

 new subspecies: b, antennal scale; d, e, first pleopod of first-form male; q, lateral view of 

 cephalic region of carapace; u, annulus ventralis (typical of all C. longulus); v, dorsal 

 view of holotype; k', x, lower and upper surface of chela of juvenile; y, z, lower and upper 

 surface of chela of adult; z.s, upper surface of chela showing key characteristics (compare 

 with C. I. longulus, fig. mm.). (Scale line equals 30 mm. where given; other photographs 

 not to scale.) 



