ARTHROPOD FAUNA OF THE WEST INDIES. 499 



anterior legs thickened, and with their basal segments inferiorly 

 subcarinate. The anterior lamina of the copulatory foot evenly- 

 cordate. 



Number of segments about 40-42. 



$ . Length up to 36 mm., width 4 mm. 



6 ' „ „ 31 mm., „ 3 mm. 



Locality. Grenada {H. H. Smith). 



Ehinocricus monilicornis {PoratJi). 



Spirobolus monilicornis, Porath, Bih. Sv. Vet.-Akad. Handl. iv. no. 7> 

 p. 31 (18/6). 



Spirobolus Heilprini, Bollman, P. Ac. Philad. 1889, p. 127. 



? Spirobolus virescens, Daday ,Term.fusetek, xiv. p. 140, pi. vii. figs. 8-10. 



Colour greenish black, with the hinder border of the segments 

 widely flavous or ferruginous ; coUum entirely bordered with 

 same pale colour ; antennae, feet, and caudal process also flavous 

 or ferruginous. 



Body tolerably slender. 



Head with nearly complete sulcus; pores 2 + 2. Antennce 

 short, scarcely reaching the border of the collum. Eyes 

 distinct, suborbicular, separated by a space greater than two 

 diameters. 



Collum laterally widely rounded, lightly marginate. 



Second segment not excavated beneath. The rest of the seg- 

 ments transversely bisulcate above; the ordinary sulcus complete, 

 and in front of it a second sulcus, which takes its origin on a 

 level with the pores. The anterior part of the segments strigose, 

 the posterior part striolate below, the striolse becoming shorter 

 towards the dorsum. 



The pores small, situated just behind, but in a loop of the 

 sulcus ; sterna transversely striate. 



Scohina present. 



Anal tergite produced into an acutely angled process, which 

 projects beyond the summit of the anal valves ; valves compressed, 

 not marginate ; sternite angled. 



Legs short. 



S . Coxa of the 3rd, 4th, and 5th legs produced into a con- 

 spicuous triangular process. 



Copulatory feet almost exactly as in the following species. 



Number of segments 44-45 in male, 48 in female. 



Length up to about 45 mm. 



