Males ; Typical males have the subanal shields directly pos- 

 terior of the adanal shields^ the lateral grooves are clear and 

 uniform, reaching almost to the eyes; scutal punctations are 

 either entirely absent, or number up to twelve superficial, un- 

 obtrusive punctations either scattered or more or less localized 

 on the scutal surface; the appearance of the scutum is bright 

 and shiny; the posteromedian groove is narrov and long, extending 

 from the central festoon to the scutal midlength; the paramedian 

 grooves are distinct, wider, and somewhat deeper, either as long 

 as or shorter than the posteromedian groove; the area in which 

 these grooves lie is usually depressed. The size is medium to 

 large, the typical color is intensely black; the legs are red- 

 dish or yellowish brown and may be somewhat lighter on the an- 

 terior surface. The posterior margin of the scutum is quite 

 rectangular, the scutal surface is usually arched. 



The specimen illvistrated (Figure 158) indicates the maximum 

 amount of punctation found in furrows or on the scutal surface; 

 the punctations in the grooves of this specimen are especially 

 numerous. A parma is either present or absent} if present it is 

 small and inconspicvujus. 



Subanal shields vary in size and shape from small to moderate 

 size. 



The leg segments may have pale rings but these do not con- 

 trast greatly with the basic color of the segments. 



The following variations have been seen; Lateral groove on 

 one side not so distinct as on the other side; or indistinct on 

 both sides beyond the posterior third (these are most confusing 

 specimens), in which case the lateral grooves continue anterior- 

 ly as a row of contiguous punctations. Linear scutal depressions 

 extending anteriorly from the posterior grooves frequently mar 

 the scutal gloss. The scutal color may be vario\is shades of 

 brown. In greatly engorged specimens, the subanal shields are 

 displaced from their typically posterior position to a lateral 

 position, external of the central axis of the adanal shields; 

 such specimens should not be confused with H. dromedarii or H. 

 impeltatum . " "" 



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