30 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.60. 



processes of the latter. Anal smooth or but little roughened in caudal 

 portion. The processes short, their apices acute and upturned (pi. 12, 

 fig. 7). 



Anal scale as shown in plate 12, figure 8. 



Gonopods as represented in plate 12, figures 9 and 10. 



Number of segments, 50. 



Length, 4 mm. ; width, 4 mm. 



Locality. — Guatemala: Trece Aguas, 1 male (O. F. Cook, June 7, 

 1907). 



Type.—Q.^t. No. 837, U.S.N.M. 



Genus SPIROBOLUS Brandt. 



70. SPIROBOLUS HOPLOMERUS Pocock. 



Spirobolus hopJomerits Pocock, Biol. Centr.-Amer., Diplop.. 1908, p. 76, pi. 

 7, fig. 5. 



Locality. — Guatemala. 



71. SPIROBOLUS STOLLI Pocock. 



Spiroiolua stolli Pocock, Biol. Centr.-Amer., Diplop., 1908, p. 77, pi. 7, figs. 

 3-3e, 4, 



Locality. — Guatemala : Pachuta. 



72. SPIROBOLUS EXIMIUS Porat. 



Spirobolvs eximins Porat, Ann. Soc. Ent., Belg., 1888, a'oI. 32, p. 248. 

 Locality. — Guatemala. 



OXOBOLUS, new genus. 



Body large and robust, typically about eight times longer than 

 thick, narrowing a little forward and more strongly caudad. Clypeal 

 foveolae 2+2 or 2+3. CoUum acutely narrowed down each side, the 

 angle narrowly rounded. Anterior border raised as far dorsad as 

 level of lower edge of eye, opposite which the margin is sinuate. 

 Repugnatorial pore above middle of side and lying in front of the 

 principal sulcus or suture. No scobina present. Anal valves 

 strongly compressed. Anal scale transverse, the caudal edge straight 

 or nearly so. 



In the male the seventh legs have the coxae much enlarged and 

 these flattened anterocaudally, carrying the legs consiiicuously far- 

 ther ventrad than in the more anterior pairs; the coxae and the three 

 following joints strongly compressed ventrally, their mesal edges 

 forming a more strongly chitinous ridge. The sixth legs in male 

 with similar chitinous ridges. Coxae of fourth and fifth legs strongly 

 compressed anterocaudally and produced ventrad ; the coxae of third 

 legs similarly extended ventrad but scarcely compressed. 



