314 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



c'. Occipital margin not angulated medially; sucking apparatus thickened, 

 with only short tip slender and with basal prongs bifurcated; prester- 

 num short, not reaching to occiput; a large median pterothoracic 

 sternite of more or less horse-shoe shape; abdomen very large 



(1.19X1.06) abdominalis 



b'. Sides of frons strongly rounded; temples expanded laterally; occipital 



margin strongly sinuate; sucking apparatus slender, tapering from base 



to tip and with basal prongs very slender but widening distally. 



c. Head larger (0.57X0.63); eye obsolete; propulsion sclerite short and 



thickened; prosternum short, with sides uniformly convex; ptero- 



thorax short (0.37), with sides constricted medially; numerous short, 



stout setae on legs pinguis 



c'. Head small (0.55X0.61); eye prominent; propulsion sclerite long and 

 slender; prosternum long, with sides constricted medially; pterothorax 

 long (0.43), with sides strongly and uniformly convex . doratophorum 

 a'. Frons transverse, or almost so. 



b. Anterior portion of head, anterior to transverse carina, more or less uni- 

 formly colored, with no concave line across front (see (fig. 80) ; eye 

 prominent. 

 c. Frons narrow, not more than 0.32; sucking apparatus long and very 

 slender, with slender supporting filaments from sides of basal prongs 

 extending almost to tip of stylet; no sternal setae in gular area, 

 d. Temples wide (0.58), strongly swollen laterally; occipital margin 

 strongly sinuate; head 0.03 longer at occiput than at temples; 



prothorax not extending under head complexus 



d' . Temples narrow (0.54), very slightly swollen laterally, and with a 

 slight constriction at eye; prothorax extending far under head; 

 occipital margin less sinuate; less than 0.01 difference between 



length of head at temples and occiput bolivianus 



c'. Frons wide (0.34 to 0.35) ; sucking apparatus short and heavy, 



especially posterior half; a row of 4 to 5 short setae on each side of 



gular area; prothorax scarcely extending beneath head. 



d. Heavy, deeply colored temporal carinae, curving backward from in 



front of eye almost to prosternum, where they are fused to base of 



sclerite which extends to basal prongs of sucking apparatus 



(see fig. 8a) fasciatus 



d' . No temporal carinae, merely marginal carinae, broken by eye. 



oenonae 

 b' . Anterior portion of head, in front of transverse carina, with a strongly 

 concave line across frons, the area in front of which is almost hyaline, 

 behind it strongly pigmented (see fig. 3/) ; median mesothoracic and 

 lateral metathoracic sternites; temples uniformly convex; eye obsolete; 

 length 2.25; head 0.49X0.53; frons 0.33 simplex 



SECTION C 



a. Frons deeply concave, with rounded lateral angles and without submarginal, 

 concave transverse line; line of five setae on each side of gular area. 

 b. Size large, body 2.54; head 0.61X0.63; frons 0.44; transverse carina wide, 

 deeply colored and extending to lateral margins of head; prominent 

 submarginal, transverse, sinuate, occipital carina, deeply colored; 

 heavy lateral, submarginal carinae on prothorax and heavy marginal 

 carinae on pterothorax; mandibles short and thickened; joints of sub- 

 marginal, abdominal carinae scarcely swollen multicarinae 



