490 MR. E. I. POCOCK ON THE 



Head smooth ; pores 2 + 2 : aBtennse short; eyes very widely 

 separated ; collum laterally rounded. 



Segments with complete and strong transverse sulcus ; the area 

 behind it slightly elevated, almost entirely smooth ; strongly 

 striate below ; no stria in front of the sulcus. Scohina absent. 

 Tores conspicuous, just in front of the sulcus, but in a loop of it. 

 Sterna striate. Anal tergite obtusely angled behind, not sur- 

 passing the valves ; valves convex and not compressed; sternite 

 triangular. 



Legs short, wdth one seta beneath the segments. 



Number of segments 40-42. 



Length up to 33 mm., width 4 mm. 



Locality. Mandeville, Jamaica, 1950 feet alt. {T. D. Cocherell). 



Of the species enumerated in this paper, R. mandevillei is 

 allied to B. Ramagei in being without the scobina and without 

 a stria in front of the complete transverse sulcus. The two 

 forms, however, differ strongly in colouring, and in JR,. Ramagei 

 the anal tergite is acutely angled behind. 



Ehinoceicus Gossei, sp. n. (PI. XXXVIII. fig. 2.) 



Colour (dry example) mostly pale greenish yellow, the area of 

 the tergites behind the sulcus ferruginous (probably olivaceous 

 or nearly black and banded with red when fresh) ; antennae and 

 legs pale, but showing signs of infuscation. 



Head smooth, polished, the sulcus weak; labral pores 2 + 2. 

 Antennce very short, shorter than the face and not extending to 

 the hinder border of the collum. Eyes consisting of about 33 

 ocelli arranged in about 6 transverse series, the ocelli not con- 

 tiguous ; distance between the eyes -greater than four diameters. 



Collum smooth above, evenly rounded at the sides, with a faint 

 marginal sulcus, not extending so low as the second tergite ; 

 second tergite flat beneath. The rest of the tergites smooth 

 above and at the sides, the longitudinal sulci extending only a 

 very short distance up the side ; the transverse sulcus complete 

 or obsolete above ; the pores situated just in front of it. Scohina 

 apparently absent *. 



Anal somite short ; the tergite produced into a rounded angular 

 process which covers but does not project beyond the valves ; 

 margin of valves compressed or scarcely at all compressed; 

 sternite triangular, the apex more or less rounded. 



* At least, it is not present upon the 11th and 18th segments. 



