418 The American Naturalist. [May, 



From the German colony of Togo comes a genus evidently allied to 

 the last, but distinct by reason of the more slender body and narrower 

 carinse, which are also scarcely produced at the posterior corners. 

 From Lampodesmus it is distinct in the absence of the process from the 

 sternum of the sixth segment, and in the form of the copulatory legs. 



A small horn-brown or yellowish creature with remarkably agile 

 movements it is proposed to name Choridesmus citus. The first segment 

 is pure white, pruinose, and abruptly different in color from the 

 remainder of the body. The pores are large, and are located in the 

 middle of the carinas, remote from the margins. The quick, jerky 

 movements remind one strongly of Polyxenus. 



Family Strongylosomatidje. 



Of this group there are two genera in Liberia, both new, though prob- 

 ably not confined to the West Coast. Scolodesmus grallator represents 

 the usual Strongylosoma type, with long legs and antennae. It is dark 

 wine-color, nearly black. Habrodesmus Icetus is a rare species appar- 

 ently confined to the darkest forests. It is exceedingly quick and 

 agile, very graceful in form and brilliantly colored. The legs are 

 orange and pink, and the segments have the posterior margin yellow, 

 shading through orange and brown to black on the remainder of the 



In gardens at Monrovia Orthomorpha vicaria (Karsch) is not un- 



Family Stylodesmid.e. 

 The type of this family^s a bizzare creature named Stylodesmus hor- 

 ridus. The generic name alludes to the fact that the pores are borne 

 on long stalks placed near the lateral margins of the broad, decurved 

 carinas. The pore-formula is the usual one, 5, 7, 9, 10, 12, 13, 15-19. 

 The whole dorsal surface of the animal is setose and coal-black. There 

 is almost always an incrustation of dirt which furnishes a completely 

 protective coloration. The head is completely concealed under the 

 flabelliform, anteriorly lobed, first segment, and the last segment is 

 reduced, included in, and concealed by the penultimate. The most 

 striking feature is that each of the segments except the last bears 

 dorsally a pair of long slender processes. Those of the anterior and 

 posterior segments are close together and show a tendency to unite at 

 the base. These processes are also rough and setose, and almost 

 always so incrusted with dirt as to appear several times their actual 

 size. If segments of Stylodesmus had been found in fossil condition 

 they would probably have been looked upon as allied to some of the 



