12 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.61. 



MICROSPIROBOLUS EREMUS. new species. 



Plate 4, figs. 7-10. 



Deep brown or black, a narrow pale ferruginous caudal border 

 on each segment and the covered portion of prozonite also paler, the 

 pale bands sometimes expanding in ventral region adjacent to legs. 

 In the lighter colored specimens the repugnatorial glands show as a 

 lateral series of black spots, particularly in the posterior half of the 

 bodj^ Legs ferruginous or brick red. 



Head smooth. Labral pores 4+4. Eyes widely separated, sub- 

 circular; ocelli in four or five transverse series in which the ocelli 

 are but weakly convex and often indistinct. 



Collum narrowly rounded beneath on each side; deeply margined 

 below and up the anterior border to level of eye. 



Segments striate only beneath, elsewhere wholly smooth. The 

 segmental suture sharply impressed throughout, widely but weakly 

 angled opposite the pore which is somewhat less than half-way from 

 the suture to caudal margin. 



Anal tergite broadly rounded behind, a little surpassing the valves. 

 Anal valves wholly smooth, not compressed or margined. Anal 

 scale broadl}^ triangular. 



With conspicuous subconical processes on coxae of third to fifth 

 pairs of legs in the male, the coxae of sixth and ninth pairs not 

 produced (see pi. 4, figs. 9, 10). 



For gonopods see plate 4, figures 7 and 8. Posterior pair very 

 small. 



Number of segments, 44-46. 



Locality. — Cuba : Soledad. Ten specimens taken in 1917-18 by 

 Thomas Barbour. 



Type.— Cd.t. No. 5032, M. C. Z. ; paratypes. Cat. No. 5033, M. C. Z. 



AOCROSPIROBOLUS MIMUS, new species. 



Plate 5, figs. 4, 5. 



Segments typically black or nearly so dorsally but paler, tes- 

 taceous, caudad of suture below level of pores and especially ven- 

 trally, and with a narrow pale caudal border as in eremus. Legs 

 ferruginous. 



Eyes widely separated, with ocelli in five series; as for example, 

 8, 7, 7, 4, 3 : Clypeal foveolae 3+3 or 4+4.' 



Collum rounded and margined below as in the eremus. 



Segmental suture distinct throughout, excised opposite the pore. 

 Segments striate beneath and also with short striae running from 

 suture a little ways caudad part way up the side. 



Anal tergite rounded behind, equalling the valves. Anal valvcf 

 weakly margined and with a few weak longitudinal striae ectad of 



