53 Psyche [April 



papillfe. There are five or six folds of each kind to a segment, and tlie 

 narrow ones sometimes divide or may anastomose with the broad 

 ones. In one of the present specimens such an alternation of broad 

 and narrow folds can be seen, but in the others, and particularly 

 in pieces of integument removed from the body and mounted in 

 balsam under a cover-slip, it is seen that the secondary folds are 

 frequently as broad as the primary ones and that they show much 

 irregularity, division and anastomosis. The middle creeping pad 

 of the legs in the types is twice as broad as the first or the third 

 pad, and in the present examples it varies from one and one-half 

 times the width of the first or third. The nephridial tubercle o? 

 the fourth and fifth pairs of legs divides the third creeping pad 

 completely in the type and also in the present specimens, although 

 in one individual these tubercles are abnormally small and do not 

 divide the pad. 



Aside from these difl'erences, there seem to be no distinguishing 

 features, and it would seem that two distinct forms cannot be 

 distinguished. It is interesting to note that the specimens at hand 

 approach P. stresemanni Bouvier from Ceram in having 23 pairs of 

 legs (23-24 in stresemanni and 22 in the typical lorentzi) and that 

 the width of the second creeping pad on the leg varies from the 

 size given for lorentzi to that given for stresemanni. 



In the case of the Papuan species, as more are being made 

 known, it is evident that the same difficulties are to be encountered 

 in difi'erentiating species as have already become apparent among 

 the American Onycophora. 



While it is apparent that P. lorentzi in the Arfak Mountain 

 region approaches the Ceramese P. stresemanni in the characters 

 mentioned, it seems improbable that the two species are not dis- 

 tinct, although it is evident that they approach one another very 

 closely. 



As no photographs of the integument of P. lorentzi have been 

 published, I have prepared some from the finely preserved speci- 

 mens forwarded by Mr. Muir. 



