46 THE BLATTIDAE OF PANAMA 



ratio. Ventro-caudal margin of cephalic femora armed throughout 

 its length with (three or four and one distal) well-spaced heavy 

 spines. Other ventral femoral margins well supplied with heavy 

 elongate spines. Ventral surface of four proximal tarsal joints 

 supplied distad with minute simple pulvilli. Tarsal claws unspe- 

 cialized. Moderately well-developed arolia present. 

 Chromatonotus heterus''^ new species (Plate III, figure 5.) 



The present insect differs decidedly from the other species of the 

 genus in the distinctive development of the pronotal color pattern 

 and in the relatively shorter tegmina and wings. The male will 

 doubtless show distinctive genitalic features, as do the males of 

 the two species for which this sex is known. . 



In linear arrangement we would place this species first in the 

 genus, followed by injuscatus (Bruner), notatus (Brunner) and 

 lamprus here described. 



The pronotal color pattern in this insect, though less clearly 

 defined, shows a striking similarity to that of Euthlastohlatta abor- 

 tiva (Caudell). 



Type. — 9; Chorrera, Panama. May 11, 1912. (A. Busck.) 

 [United States National Museum.] 



In addition to the generic characters given, we would note the following. Size 

 slightly smaller than in lamprus, form much as in that species.' Interocular space 

 very slightly greater than width between antennal sockets; ocellar spots very 

 small, with area weakly defined, even smaller than in this sex of lamprus. En- 

 larged fifth (distal) joint of maxillary palpus very slightly longer than third joint, 

 decidedly longer than fourth joint. Tegmina and wings proportionately not as 

 elongate as in lamprus \ wings with greatest width of anterior field about one-fourth 

 its length, short costal veins strongly enlarged distad (eleven), intercalated triangle 

 nearly as wide as deep. Supra-anal and subgenital plates as in this sex of lamprus. 



Head blackish carob brown. Proximal antennal joint, ocellar spots, mouth- 

 parts and maxillary palpi buffy; remaining portions of antennae chestnut brown. 

 Limbs ochraceous-buff tinged with tawny. Ventral surface of abdomen cinnamon 

 brown, deepening to chestnut brown laterad. Pronotum shining, margined nar- 

 rowly cephalad (though not as narrowly as in lamprus) and more broadly lat- 

 erad with ochraceous-bufif, this pale coloration crossing the dark remaining portions 

 of the pronotum as a narrow band just before the caudal margin; leaving the very 

 large meso-cephalic area and caudal margin blackish carob brown, the margins of 

 these dark areas suffused, not sharply defined. Tegmina translucent, evenly and 

 weakly tinged with buckthorn brown. Wings translucent, very weakly tinged 

 with buckthorn brown; costal veins buckthorn brown. Dorsal surface, including 



'^ From €T6pos = different. 



