10 PROCEEDINGS OF THE NATIONAL MUSEUM. tol. 60. 



30. LABROBIUS COSTARICENSIS (Brolemann). 



Lithobius vvlcani costaricenais Beolemann, Ann. Soc. Ent. France, 1905, 

 p. 339. 



Locality. — Costa Rica: El Reventado. 



81. LABROBIUS COBULCANUS. new species. 



Plate 1, figs. 6 and 7. 



This form is separated chiefly on the characters of the prosternum. 

 This differs from L. vulcani (Pocock) in lacking the stout outer 

 third tooth on each side of the prosternum. The prosternal margin 

 extends out horizontally considerably beyond the ectal tooth, much 

 as in L. minor Chamberlin ; the edge a little ectad of the outer tooth 

 is produced cephahid, the special ectal seta being borne upon the 

 prominence, as shown in figure 6. Articles of antennae, 33 to 39. 

 Ventral spines of penult legs, 0, 1, 3, 3, 1-0, 1, 3, 3, 2, with three 

 claws. Claw of female genital forceps entire; basal spines 2-{-2, 

 rather stout (fig. 7). Color, chestnut. 



Length, 16 mm. 



Locality. — Guatemala: Joyabaj, lower slope of Cobulco Mountain, 

 two females, both of which have lost their anal legs (O. F. Cook). 



Type.— Cat. No. 24124, U.S.N.M. 



Genus SOWUBIUS Chamberlin. 



32. SOWUBIUS STOLU (Pocock). 



Lithobius stolU Pocock, Biol, Centr, Amer., Chilopoda, 1895, p, 9, pi. 1, 



figs, 10-lOc, 

 Soiotibius stolli Chamberlin, Canad, Ent., 1912, p. 178. 



Locality. — Guatemala: Volcan de Agua, 



Genus SOTIMPIUS ChamberUn. 



33. SOTIMPIUS DECODONTUS (Pocock). 



Lithobius decodontus Pocock, Biol, Centr, Axuer., Chilopoda, 1895, p. 9, 



pi. 1, figs. 9-9&, 

 Sotiinpius decodontus Chamberlin, Canad, Ent.. 1912, p, 177, 



Locality. — Guatemala : Volcan de Acatenango. 



Order GEOPHILOMORPHA. 



Family SCHENDYLIDAE. 

 Genus SOGOLABIS Chamberlin. 



34. SOGOLABIS SCAPHEUS Chamberlin. 



Sogolabis scapheus Chamberlin, Psyche, 1920, vol. 27, p. 64. 



Locality. — Guatemala : Coban, 



The type of this species was taken actually at Washington. Dis- 

 trict of Columbia, but from soil about roots of the pacaya or salad 

 palm (Chamaedorea) at quarantine, im.ported from Coban. 



