chamberlin: west ixdiax chilopoda and diplopoda. 187 



95. RmxocRicus rarior, sp. nov. 



Type — M.C.Z.4:,U2. Haiti: Grand Riviere. W.M.Mann. 



Belonging in that relatively small group of West Indian species 

 having no scobina. It differs from the other Haitian species of the 

 group, R. mandevillei, among other features, in having the suture 

 dorsally obscure instead of deep and complete. The head and coUum 

 are ferruginous. The anal scutum is shining black with narrow flavous 

 caudal border. The anal valves are dusky over a ferruginous ground. 

 The other segments are black with narrow ferruginous caudal border 

 which above does not extend to the suture but attains or extends 

 beyond it down low on the sides. Legs and antennae ferruginous. 



CoUum widely rounded below. Weakly margined about the lower 

 anterior corner. Failing much of attaining the lower margin of the 

 second tergite which is not excavated below. 



Sutures straight, not at all or only very weakly curved opposite 

 the pores. 



Number of segments, forty-se^'en. 



Length about 45 mm.; width, 4 mm. 



96. Rhixocricus excisus Karsch. 



Zeits. naturw'iss., 1881, ser. 3, 6, p. 73; Pocock, Journ. Linn. 33?. London, 

 1894, 24, p. 491.1 



Habitat. — Jamaica.^ 



97. Rhinocricus newtoxianus, sp. nov. 



Type.— M. C. Z. 4,343. Paratypes.~M. C. Z. 4,344. Jamaica: 

 Newton, January, 1912. C. T. Brues. 



This species is like R. parens and R. holomelanus in having the pos- 

 terior border of some of the anterior somites bisinuate above the 

 scobina, but aside from being a very much smaller species differs 

 strikingly in color as well as in structural details. In coloration it 

 much resembles R. heteroscopus, having a series of black transverse 

 bands across the dorsum, each band in front of the suture, on each 

 side of which there is a sharply marked longitudinal pale stripe with 

 below dark vertical stripes narrowing ventrad as in the species men- 



