MORGAN HEBARD 25 



Supra-anal plate transverse, free margin evenly convex, dorsal surface unspecial- 

 ized. Subgenital plate extending the same distance caudad as the supra-anal plate, 

 surface evenly convex, free margin with convexity greatest dextrad, where the 

 production is a little the greatest; dextral style situated at that point, a minute 

 knob no longer than broad ; minute sinistral style situated in the same relative posi- 

 tion sinistrad, two-thirds as large as dextral style but otherwise similar. Limbs 

 and armament of same type as described from .4. asema, but in the present species 

 showing the following decided reduction. V'entro-cephalic margins of cephalic 

 femora lacking the proximal heavy spines; cephalic margins of median and caudal 

 femora with a single spine or sometimes with one or more of these margins entirely 

 unarmed. '° \'entro-caudaI margins of limbs unarmed. 



Allotype. — 9 ; same data as type. [United States National 

 Museum.] 



Agrees with type in ambisexual characters, differing in the following respects. 

 Form very slightly but appreciably more robust. Tegmina reaching very slightly 

 beyond apex of abdomen. Supra-anal and subgenital plates typical for genus, as 

 described under asema. 



Measurements {in millimeters) 



& 



Type . 



Allotype 4.6 1.2 1.7 3.8 1.4 



Very little size variation is shown by the present series. The sexes have the 

 tegminal length ranging from 3.8 to 4.3 mm. The males have the body length from 

 3.8 to 4, the females from 4.4 to 4.8 mm. 



Coloration. — Dorsal surface and antennae immaculate, shining, ochraceous- 

 tawn>-. Head deep ochraceous-tawny, eyes blackish chestnut brown. Tegmina 

 entirely unicolorous, moderately transparent, ochraceous-tawny. Wings suffused 

 with prout's brown, this heavy in the brief area of the costal veins and cephalic 

 portion of the appendicular field, weakest in the medio-discoidal area and in the 

 radiate field, which shows no trace of iridescence. Underparts and limbs pale, the 

 ventral surface of the abdomen palest, ochraceous-buff tinged with tawny. 



Intensification and recession in the present series is slight; the darker individuals 

 have the antennae much darker, prout's brown, while the underparts are uniformly 

 ochraceous-tawny. 



In addition to the t\'pe and allotype, the following specimens are 

 considered paratypes. 



Rio Trinidad, Panama, \', 5, to VI, 10,. 191 1 and 1912, (Busck), i cf, 4 9. 



Tabernilla, Canal Zone, Pan., V, 17 and VI, 8, 1907, (Busck), I cf, I 9. 



Cabima, Pan., \', 18 to 21, 191 1, (Busck), 2cf, I 9. 



^^ As has been noted elsewhere, reduction in the armament of the limbs in a species of 

 the Blattidae appears to be accompanied by irregularity in the spines which remain. 

 This is true for the present species and is generally met with in the species of the genus 

 Blaberus. 



MENf. .\M. ENT. SOC, 4. 



