660 PROCEEDINGS OF TEE NATIONAL MUSEUM. 



two regions. In favor of the Eio Pongo label as correct is the capture 

 of a specimen apparently referable to this species near Suey, a native 

 town about 35 miles inland and northeast from Monrovia. It was col- 

 lected in a region prev iously cultivated by the natives, but at that time, 

 April, 1892, covered with a dense growth of vegetation several years 

 old. That it remains the only specimen secured, after opportunities of 

 collecting extending over several years, shows that the species is very 

 rare in Liberia. 



In life the creature appeared black in color banded with briglit ver- 

 milion red. It was vslow and rather clumsy in its movements and made 

 little attempt at securing protection by coiling up, in tliis offering con- 

 siderable contrast to the large Spirostrepti, which are provided with 

 harder shells, stronger muscles and corresponding instincts. The 

 difference between the two groups is also apparent in alcoholic spec- 

 imens. 82nrostrcpti in this condition are nearly always hard and brittle, 

 while Spiroholl frequently remain quite flexible. 



The present species would seem in all probability to represent Porat's 

 P. gujauteus, the type of which was from Siena Leone, but which was 

 also reported from Liberia as collected by Moddermann. The literature 

 is, however, sufficiently confused already without the bazard of another 

 doubtful determination, and the fact that Porat has admitted the 

 reduction of gigantetts to j>M/ri//rt/».s- and has in the same paper referred 

 Kamerun material to the latter species, would seem to show either that 

 species are much more numerous than yet appears or that the synonymy 

 was arranged without reference to the characters of the copulatory Ici^s. 



The Liberian specimen is about 100 mm. long, 15.3 mm. thick at seg- 

 ment 6, and has 50 segments. 



PACHYBOLUS LIGULATUS (Voges). 



^ (Plato L, ligs. la-ic.) 



Spirololns Urjidatus Yoges, Zeitsch. f. Wissensch. Zool., 1878, XXXI, p. 180; pi. 

 Ill, figs. 35, 35a. 



Type. — Hamburg Museum. 



LocaJit}/. — Lagos, West Africa. 



There are also in the Hamburg Museum six specimens of this species 

 collected at Grand Popo, German colony of Togo, by F. Martina^n. 

 The number of segments is 50. 



PACHYBOLUS EXCISUS, new species. 

 (Plate LI, tiiis. 1«-1/.) 



Type.— 1^0. 1321, Berlin Museum. 



Locality. — Kamerun. 



Length, 100 mm.; greatest width of male, 15.3 mm. at segment 6; 

 segments, 51 to 52. 



Color of alcoholic material dark brown, ringed on the anterior sub- 

 segments with dark cherry -red above the pores, and light brown below. 



