Fig. 1. 
DIPLOPODA. 
PLATE VII. 
Spirobolus godmani, sp. n.: 1 a, lateral view of anterior extremity, of a tergal plate of the 
middle of the body, and of the posterior extremity; 14, lower surface of anterior end 
of body of male showing the legs of the anterior seven pairs; le, anterior aspect of 
copulatory apparatus; 1d, posterior aspect of the copulatory apparatus; 1 e, anterior 
aspect of extremity of right phallopod. 
. Spirobolus fossulifer, sp. n.: 2a, basal segments of the legs of the anterior six pairs; 
2b, infero-lateral portions of the anterior three tergal plates ; 2c, infero-lateral portion 
of eighth tergal plate from the end of the body to show the striz and serrulation ; 
2 d, anterior aspect of copulatory apparatus ; 2 e, distal extremity of right phallopod. 
. Spirobolus stolli, sp. nu. (¢ from Pachuta): 3a, infero-lateral portions of anterior four 
tergal plates showing the shape of the postero-lateral angles of the second and third 
plates ; 36, basal segments of the legs from the third to the seventh pairs; 3c, anterior 
aspect of copulatory apparatus; 3d, posterior aspect of the same with the anterior 
portion removed ; 3e, right phallopod from behind. 
Spirobolus stolli (?) (2 from Costa Cuca): infero-lateral portions of anterior four tergal 
plates for comparison with fig. 3 a. 
. Spirobolus hoplomerus, sp. n.: infero-lateral portion of eighth tergal plate from the end of 
the body to show the strong crests and spine-armature. 
. Cyclothyrophorus salvini, gen. et sp. n.: 6a, lateral view of head and first two tergal 
plates to show the extent of the exposure of the mandible ; 6 J, dorsal aspect of anal 
segment to show the convexity of the valves; 6c, anterior aspect of the copulatory 
apparatus ; 6d, right phallopod. 
. Spirobolellus richardsoni, sp. u.: 7 a, lateral view of anterior extremity of a tergal plate of 
the middle of the body and of the posterior extremity ; 7 6, anterior aspect of copulatory 
apparatus ; 7c, posterior aspect of the same; 7d, anterior aspect of left phallopod; 
7 e, posterior aspect of the same. 
. Spirobolellus tylopus, sp. n.: 8 a, anterior aspect of copulatory apparatus ; 8 J, posterior view 
of posterior laminz of coleopods; 8c, phallopod; 8d, extremity of third leg of male 
showing swollen tarsus, minute claw, and membranous sensory papilla on protarsus. 
. Spirobolellus atriculus, sp. n.: 9a, anterior aspect of copulatory apparatus; 96, posterior 
aspect of posterior laminz of coleopods; 9c, third leg of male to compare with fig. 8 d. 
