1921] Brues — On Faraperipatus Lorentzi Horst 51 



Up to the present time, six species of Onycophora, all belonging 

 to Paraperipatus have been found in New Guinea and the adjacent 

 islands of Ceram and New Britain. In order of their discovery, 

 they are the following: 



P. novce-britannicB Willey. 1898. New Britain. 



P. ceramensis Muir & Kershaw. 1909. Western Ceram. 



P. papuensis A. Sedgr^'ick. 1910. Arfak Mts., Dutch North 

 New Guinea. 



P. lorentzi Horst. 1910. Wichmann Mts., South Dutch New 

 Guinea. 



P. schultzei Heymous. 1912. German New Guinea. 



P. stresemanni Bouvier. 1914. Ceram. 



With the exception of P. schultzei and its variety ferrugineus, 

 these have been considered by Bouvier ('14) in an admirable paper 

 which includes a key to species based on type material of novce- 

 britannice, papuensis, ceramensis and stresemanni. P. lorentzi is 

 included in his table from Horst's descriptions ('10 and '11), but 

 P. schultzei is not mentioned. 



An examination of the specimens send by Muir shows that they 

 are not P. papuensis, the type locality of which is the Arfak Moun- 

 tains, from whence the examples before me also have come. They 

 agree rather closely with P. lorentzi, originally discovered in the 

 Wiclmiann Mountains which lie to the south of the region occu- 

 pied by the Arfak range. In spite of the several differences de- 

 tailed below, I have been forced to conclude that two species, 

 papuensis and lorentzi occur in the Arfak Mountains. Whether the 

 two species occupy a different level, cannot be stated, as there is 

 no indication of altitude on the label attached to the present speci- 

 mens. However, papuensis occurs at an altitude of 3,500 feet, and 

 lorentzi was originally found at 9,000 feet, so that it is very prob- 

 able that the two do not overlap in their distribution. 



The types of P. lorentzi were females with 22 pairs of legs. All 

 tliree of the present species are also females, each provided with 

 23 pairs of legs. In the types the transverse body folds are of two 

 types, consisting of broad folds bearing mainly large papillae, alter- 

 nating with narrow folds, which are supplied mainly with accessory 



