374 Annals Entomological Society of America [Vol. XI, 



narrowly rounded, bearing distally numerous long hairs. The posterior 

 division is a stout, thicker and longer process; it is furrowed across the 

 apex and down the caudal side and is bent moderately cephalad at the 

 tip; the process is glabrous. The principal process of each posterior 

 gonopod is a blade flattened from side to side and curving back caudad 

 below the groove in the posterior piece of the anterior gonopod ; it is not 

 distally acute and is without branches or processes ; it bears the seminal 

 duct, which opens above a little proximad of the tip. A much smaller, 

 straight, distally pointed process extends ventrad on the ectal side of the 

 base of the principal process, its tip not attaining the lower level of the 

 latter. 



Length of a female near 53 mm.; width, 3.5 mm. 



Locality. — La. : Creston. One specimen each on February 22, 

 February 28 and March 5 (male, type) and two without date. 



Cambala annulata (Say). 



Numerous specimens taken near Creston, La., in February, 

 March and May, 1915. 



Spirobolus marginatus (Say). 



One small specimen taken on Spring Creek, Ga., Aug. 27, 

 1913. Also three specimens taken near Creston, La., in March 

 and April, 1915. 



Spirobolus paludis sp. nov. 



This species in comparison with S. marginatus is distinguished in 

 general appearance by its coloration, the sides contrasting through their 

 paler brownish color with the mainly blackish dorsum, the black band 

 across each somite covering the entire width dorsally, but narrowing 

 down each side along the anterior margin and ending in a very acute 

 point ventrally. The first dorsal plate is narrowly margined with a 

 lighter color, both anteriorly and posteriorly and the other somites of 

 the anterior region are margined caudally with lighter color, the marginal 

 stripe obscure or absent dorsally in middle and posterior regions. 



The antennal furrow on head below eye and across cardo of mandi- 

 bles much shallower and less sharply limited than in marginatus, with' 

 no trace of the ridge bordering the furrow on the cardo ventrally though 

 the ridge on the catidal side is present. Cardo lacking the small, very 

 acute ventrodistal process seen in the male marginatus. 



Second segment much less produced below the first plate than in 

 marginatus, not at all extending below level of general ventral surface 

 of the segment and not much lower anteriorly than posteriorly. 



The modifications of the anterior legs in the male are very obviously 

 different from those in marginatus. The first two pairs of legs are 

 smaller in size than the others. The third pair of legs show ventrally 

 a pair of rounded processes contiguous at the middle line, and bearing 

 distally two or three long setse. The coxal processes of the fourth legs 



