194 BULLETIN 46, UNITED STATES NATIONAL MUSEUM.- 



6. Spirobolus zonipus, sp. nov. 



Diagnosis. — Belated to Spirobolus facatus Karsch, but the anterior 

 part of segments with a transverse sulcus ; segments visibly divided ; 

 legs shorter; greenishblack, legs brown, joints ringed with paler. 



Type. — Female, IT. S. Nat. Museum. 



Habitat. — Paramaribo, Surinam. 



Description. — Dark greenish black, posterior border of segments yel- 

 lowish ; antenna?, dark ; legs brownish, last tarsal joint pale, others ringed. 

 Eather slender, anterior segments scarcely attenuated. Vertex smooth, 

 sulcus deep, subcontinuous with clypeal; clypens not deeply einargi- 

 nate, sulcus small, foveola? 2+2. Antenna? short and thick, reaching 

 second segment. Ocelli 40-45, in 7 series ; patch subtriangular. Seg- 

 ment smooth, sparsely punctate; anterior part with a transverse sul- 

 cus which ends in under pore, not striate beneath; posterior .part with 

 short stria? beneath. Sides of first segment rounded, not acute, a mar- 

 ginal salens. Eepugnatorial pore small, placed on anterior part; sul- 

 cus bent. Anal segment produced into a wide, flat, obtusely angled 

 mucro, which passes beyond valves; anal valves scarcely margined, 

 not punctate; anal scale large, obtusely angled. Legs not quite ex- 

 tending beyond sides of body. Segments 46-48. Length, 43-50 mm ; 

 width, 4-5" 11 ". 



Described from several females most of which are broken ; they were 

 found in the vial containing S. surinamensis, without any locality. 



7. Spirobolus dugesi, sp. nov. 



Diagnosis. — Belated to Spirobolus Icetus Karsch, but the segments 

 very plainly segmented; stria? not extending beyond the length of legs; 

 shining bluish black. 



Type.— Male, U. S. Nat. Museum. 



Habitat. — Guanajuato, Mexico ; Duges. 



Description. — Dark shining bluish black, posterior border of seg- 

 ments paler ; antenna? and legs reddish brown. Slender, anterior seg- 

 ments scarcely attenuated. Vertex smooth, sulcus very shallow; cly- 

 peus moderately emarginate, foveola? 2+2, sulcus shallow, extending to 

 opposite bases of antenna?; between antenna? are two oblique sulci 

 (^\); antenna? short, clavate, reaching second segment. Ocelli only 

 represented by a black area, in which are indistinct traces of ocelli; 

 colored area subcircular, partly covered by first segment. Segments 

 rather deeply divided, smooth; stria? of posterior part not extending 

 beyond length of legs. Lateral border of first segment rounded, a very 

 short marginal sulcus. Spine of anal segment large and long, tip 

 slightly recurved ; anal valves produced in under spine, very strongly 

 margined, a margin extending around anal scale; anal scale large, ob- 

 tusely angled. Eepugnatorial pore rather small, deep set; behind them 

 is a deep sulcus on posterior part of segments. Legs short, not extend- 

 ing beyond sides of body. 



