500 ME. R. I. POCOCK OK THE 



Locality. Barbadoes {H. W. Feilden) ; Cape Hayti. 



I can find no valid reason for separating S. monilicornis from 

 M. Seilprini. 



The species seems to be tolerably widely spread. R. moni- 

 licornis was recorded from Brazil aud i2. Seilprini from 

 Bermuda. In addition to the specimens already mentioned from 

 Barbadoes, the British Museum has others, all apparently 

 co-specific, from Georgetown, Demerara {J. J. QuelcJi), and 

 Bermuda (' Challenger '). 



Ehestocrictjs consociattjs, sp. n. (PL XXXVIII. fig. 7.) 



Closely allied to the preceding. 



Colour much darker ; segments black, with the hinder border 

 only flavous or ferruginous, and only about the posterior third 

 of the anal tergite pale coloured ; antennae and legs lurid. The 

 transverse sulcus complete dorsally on all the segments, except 

 the first and last ; the second sulcus always clearly defined in 

 front of it, so that each segment is evidently transversely bisul- 

 cate dorsally. 



In the male the coxae of the 3rd-5th legs are much less 

 noticeably enlarged than in R. monilicornis, and the legs of the 

 rest of the body are considerably larger — i. e. they are about as 

 long as the face. 



Number of segments M. 



Length up to 35 mm., width 3 mm. 



Locality. Union Island. 



Ehifocricus letjcostigma, sp. n. (PI. XXXVIII. fig. 8.) 



Spirobolus paraensis, Pocock, Ann. Mag. Nat. Hist. (6) ii. p. 4/9 (not 

 paraensis of Humb. 8f Sauss.). 



Allied to JR. monilicornis. 



Colour black ; a flavous spot marking each pore and a large 

 fulvous spot upon the middle of the dorsal surface on the anterior 

 half of the segments ; legs and antennae flavous or fulvous ; anal 

 valves posteriorly ferruginous ; sterna fulvous. 



Head transversely striolate ; pores 24-2. LJyes large, orbicular, 

 separated by a space about equal to three diameters. Antennce 

 jiist surpassing the collum. 



Collum evenly rounded laterally, with a marginal sulcus ; the 

 rest of the segments smooth above ; the vertex crossed by two 

 sulci as in monilicornis, but the anterior sulcus rises some distance 

 below the pore ; the area in front of the main sulcus obliquely 



