TWO NEW SPECIES OF ONYCHOPHOBA. 483 



The renal papillas of the fourth and fifth pairs of legs are 

 continuous with the proximal pad (the third), but do not 

 divide it in two. The feet carry three papilla near the edge, 

 one in front, one behind, and one dorsally. The outer blade 

 of the jaw has lost its accessory denticle, the inner blade has 

 no diastema and the denticles are few. The ductus ejacula- 

 torius is almost as long as in Eoperipatus. Male accessory 

 glands open to the exterior by one or tAvo openings situated 

 between the genital pore and the anus. When there are two 

 they are widely separated. The genital opening (female) is 

 round. There is a pair of receptacula seminis, but no recep- 

 tacula ovorum. The ova are large, full of yolk, and exo- 

 genous. Development may take place in the uteri, or ova are 

 discharged. When development takes place in the uteri the 

 young at birth measure 5 mm. 



Genus 5. Opisthopatus : — The legs have three pads. 

 The renal papillae of the fourth and fifth pairs of legs are 

 situated in the proximal pad. The feet carry three papillae, 

 one in front, one behind, and one dorsally. The outer blade 

 of the jaw has a small denticle inside the bigger one; the 

 inner blade has no diastema, but a row of small denticles. 

 Male unknown. The female genital opening is a transverse 

 slit. No receptacula seminis or ovorum. The young at 

 birth are large in size. They are of different ages in the 

 uteri. 



Genus 6. Peripatopsis : — The legs have three pads, and 

 the excretory papillee of the fourth and fifth pairs of legs ai'e 

 situated in the proximal pad. Feet have three papillae near 

 the apex, two on the anterior side, and one on the posterior 

 side. The outer blade of the jaws has a small accessory tooth 

 at the base of the main tooth ; the inner blade has no 

 diastema, but has a row of small denticles. The ductus 

 ejaculatorius is shorter than in genei-a 1, 2, and 4. The male 

 accessory glands open into the ductus ejaculatorius. The 

 female genital pore is a longitudinal slit. There are no 

 receptacula ovorum or seminis. The ova are large, devoid of 

 yolk, and arise exogenously. The young at birth are of 



