little-known Neotropical Scorpions. 477 



Tail with the median keels on segments 1-4 absent, as in 

 H. lunatus ; the interior-lateral keels distinct and finely 

 grannlar, the superior and sujDerior-lateral keels and the spaces 

 between them distinctly granular ; superior edges, lateral and 

 inferior surface of fifth caudal SL'gmciit, and vesicle granular. 



C/iehe: humerus with superior and anterior granular 

 crests; brachium smooth, puncture I, without distinct crests, 

 the inferior crests on the anterior side alone being weakly 

 granular ; hand smooth, narrow, barely as wide as brachium, 

 its width less than length of underhand and a little loss tiiaii 

 half the length of the movable finger; fingers in contact 

 throughout, neither lobate nor sinuate. 



Pectinal teeth 12-15. 



c?. — Like the female, but with the upperside of the trunk 

 more granular; the frontal area only smooth in the middle; 

 sterna also finely shagreened throughout. Chelai as in female. 



Pectinal teeth 15-17. 

 ? . — Total length 30 milliin., carapace 4*5, tail 19. 



Loc. Eten (sea-level), Peru (P. 0. Simons). Several 

 adult males and females. 



Subspecies vittatus, nov. 

 (Mountain form.) 



Kearly allied to the typical form, but much blacker, the terga 

 being black and marked with five longitudinal yellow bands, 

 the black patches being much larger than in //, leopardus. 

 The inferior-lateral crests of the tail are smoother than ni 

 the typical form and the tail niuie robust. Male unknown. 



Pectinal teeth 14-16. 



Total length 40 millim., carapace 5, tail 'lb. 



Loc. Banos, 3UU0 m., near Oajainarca in Peru (/'. (J. 

 Siinonx). 



Synopsis of the Species. 



(t. Last iibdoiiiiiial s-e^nuent and antfrior three caudal seg- 

 ments furuislied beluw \\\t\\fuur lieels. 

 (/'. .Sii|)erior-laterai edged of littli caudal segment >.mootli. carituitics. 

 b\ SuperiiM-lateral edged, of fifth caudal s.ginent 



granular macuiafu.^. 



b. Last abdominal sternum and anterior three caudal s g- 

 ment.N with median keels absent. 

 a^. Jiraeiuuiu without crests above, not wider than 

 hand ; tiugers in contact tiu'ougliout in the adults 



of liiith .-exes, neither sinuate nor lobale k-njmidus. 



b- . IJraciiium strongly crested, narrower than hand; 



hngers ligiitly or strongly siinnite. 



«'. Snuill, ;i() 40 mm. in adult: pectimil teeth ll-l') 



(d $^» Inind not granular, hngers more strongly 



lobate; width of hand in adult otdy about half 



the length of the carapace luimtuA. 



