NO. 1168. THE GENUS PACUYBOLUS—COOK. 059 



Anterior lamina of copulatory legs deoi)ly and broadly excised on its mesial edge 

 beyond the apex of tli<5 sternnm; lliigellnni somewhat narrowed and rounded at the 

 nearly simple ai)ex, and with a small, somewhat appressed, tooth-likt; process con- 

 cealing the large seminal aperture: P. excisus, new species, Kiimerun. 



Anterior lamina mesially emarginate or entire; tiagellum expanded or laminate- 

 complicate at apex - 



Sternum of copulatory logs with mediiin proccsss truncate or tmiarginate, sliort, 

 broader than long; (iagellum distally ahru])tiy and strongly expanded, coin))li(ate- 

 difform : /'. brachynUrnns, new species, Congo. 



Sternum medianly distinctly longer than l)roa(l; tiagellum gradually and only 

 moderately expanded distad, the apex more simple, somewhat nne\ enly channeled 

 below, or spoon-shaped 



Sternum of copulatory legs witli median process hirge and liroad, strongly cari- 

 nate medianly; llagellum at apex with numerous wrinkles and ajjpressod lanieihe: 

 /', ma<ronlcrir.iK,-i\v\y sptu'ies, Congo Free State. 



Sternum with median process narrower, espe<;ially distad, as the sides cf»n\(nge 

 strongly from the base; median carina slight or wanting; flagellum at apex simple 

 and nearly snu)()th 



Flagellum stout, the seminal opening located in the larger apical lobe: P. tof/oeiisis, 

 new s[)ecies, Togo Hinterland. 



Flagellum nu)re slender; the lobe which bears th(! aperture is exceeded in si/.e by 

 asubapical exi)an:-ion much larger th.in the corresponding structure in the preceding 

 specdes: P. lectux, new species, Zan/.ihar. 



l<\)ll()\viiig the (l»'S(.Ti])tioiis of tliesc species ;ire references to the ohler 

 mimes, whicli, on account of tlie lack of <lesc'ii[)tions or (igiires of the 

 coi)uliitory legs, it is impossible to identify until tlie types ciin be 

 examined with reference to these cliaracters. 



PACHYBOLUS LAMINATUS, new species. 



(Plate L, tigs. 8a-3/.) 



Type.—l^o. 774, U.S.N.M. 



LocalHi/. — Liberia. 



Length, 150 mm.; greatest diameter of male, 14.5 mm. at segment 

 (I; number of segments, 54 to 5(1. 



('olor of alcoliolic material dark brown, ringed W'ith red above and 

 sordid whitish below tlie pores. 



Copulatory legs quite distinct in fonn from those of the other si)ecies, 

 being broad, thin, and compressed toward the base, and gradually 

 narrowed to the rather narrow apex, which bears a flattened, sub- 

 triangular, spine-like process which rises from one side of the flattened 

 chitinous blade. Even more remarkable is the large, hatchet-shai)ed, 

 thill process, nothing similar occurring in the other known s])ecies. 



Six male and two female spe(;imens are in the Hamburg Museum, 

 one (No. !>5iy) labeled " Rio I'ongo Senegambien, Dr. Ulez." This has 

 5(> segments. The other specimens have 54 segments, with the locality 

 given as "Gabun, II. i*etersen. No. !)552." I suspect that one or the 

 other of these labels is incorrect, such a wide distribution appearing 

 unlikely, no diplopod "species being yet known to be common to these 



