CHAMBERLIN : WEST INDIAN CHILOPODA AND DIPLOPODA. 245 



208a. ZiGWADESMUS BRUNNEUS, sp. nov. 



Type— M. C. Z. 4,528. 9 . Parahjpc— M. C. Z. 4,529. Trini- 

 dad : near Port of Spain. Roland Thaxter. 



The general color above is dull brown, becoming somewhat darker 

 in going cephalad. The keels and an area immediately above them 

 are pale, while a light spot occurs a little higher on each side of the 

 prozonite. The pleural region also brownish, darker below each keel 

 and along caudal border of segment. Head brown, uniform or nearly 

 so, or vertex a little lighter, the labrum not pale. Legs light brown, 

 the antennae somewhat darker. 



Anterior margin of first plate almost evenly convex, slightly flat- 

 tened caudad of each antenna; caudal margin trisinuate, the plate 

 subacutely narrowed at each side. 



A slight lateral serration detectable on second, third, and fourth 

 keels near anterior end. Keels from fifth caudad much reduced. 

 Caudal processes of nineteenth plate very small, almost mucro-like; 

 those of two preceding plates moderate, subconical and acute, equal 

 or nearly so. 



The Cauda much exceeds the anal valves, its ventral edge nearly 

 straight, the apical cones extending ventrad of caudad. 



Length (female type), about 35 mm.; width, 4.5 mm. 



Strongylosomidae. 



209. Orthomorpha coarctata (Saussure). 



Polydesmus coarclata Saussure, Mem. Soc. phys. Geneve, 1860, p. 39, f. 18. 



Strongylosoma poeyi Bollman, Ent. Amer., 1887, 3, p. 82. ' 



Strongylosoma coarctatutn Focock, Journ. Linn. soc. London, 1894, 24, p. 512. ^ 



Habitat. — Cuba:^ Havana (W. M.^ Wheeler). Sierra de Caballos 

 (T. Barbour, W. S. Brooks). Grand Cayman. Jamaica: Li- 

 guanea Plain (C. T. Brues), Port Antonio (A. E. Wight). Haiti: 

 Port au Prince, Momance, Cape Haitien, Grand Riviere, Emery, 

 Manneville, Jacmel, Petionville, Diquini (W. M. Mann). Porto 

 Rico: Rio Piedras (R. Cotton). Dominica (G. A. Ramage).^ 

 Grenada: St. Georges. Barbados.^ Union.- Tobago: Richmond 

 Bay, near Plymouth (H. L. Clark). Trinidad: Port of Spain (R. 

 Thaxter). 



