GYMNOGNATHUS. 337 
2. Gymnognathus claudia, sp.n. (Tab. XI. figg. 8, 8a.) 
é @. Pygidium rounded ; anal sternite long-bidentate. Black, pronotum and elytron rufescent-brown, first 
antennal segment, femora, and bases of tibiee rufous. Head and rostrum with broad greyish-yellow 
mesial vitta which is continued to base of pronotum., An oblique, lateral, subventral, luteous-grey 
vitta on anterior half of prothorax; a small grey spot in front of dorsal carina halfway between 
mesial vitta and basal angle. Scutellum yellowish-grey. Elytron with grey lines: a line running 
from base of third interspace oblique towards suture, being connected before middle of suture by a 
transverse bar with the line of the other elytron, the line then turning obliquely laterad, ending on 
disc at apical third; at base this line continued along basal margin to scutellum as well as towards 
shoulder, turning backwards for a short distance before reaching shoulder-angle ; a basal spot below 
shoulder; an angular sutural mark before apical declivity, sometimes continued to lateral margin ; 
a small lateral marginal spot in middle. Pygidium with thin greyish-white or luteous lateral line 
and a short basal mesial line. Underside greyish-white, the pubescence condensed to distinct spots 
laterally on abdomen. 
Rostrum half as long again as broad, rather deeply impressed as far as the yellowish vitta extends. Pro- 
thorax somewhat longer than basally broad; dise slightly depressed longitudinally in middle; angle of 
carina a little over 90°, with the tip rounded off; basal lateral carina forming equal angles with the 
dorsal and lateral carinz. 
Length 6-7 millim. 
The shoulder-line of the elytron is sometimes connected with the dorsal line and with the infra-humeral spot. 
Hab. Nicaracua, Chontales (Belt); Payama, Bugaba, Volcan de Chiriqui [type] 
(Champion). 
A series. Nearest to G. tenuis, Jord. (1895), from Brazil, but with the rostrum 
shorter and the pattern different. 
3. Gymnognathus polius, sp. n. (Tab. XI. fig. 9.) 
3 Q. Like G. claudia, but rostrum shorter, more broadly impressed, with conspicuous mesial carina. Pro- 
thorax shorter, more convex above, vitta broader. Pattern of elytra different from that of G. claudia: 
basal margin from scutellum to shoulder broadly grey, suture of the same colour from base to apical 
declivity, the grey pubescence becoming more sparse behind, the sutural area extending laterad to fourth 
interspace, sending out a spur in middle and a thinner line before apical declivity, the line reaching 
lateral margin ; an oblique supra-humeral vitta extending obliquely towards sutural area, which it mostly 
reaches, isolating a rufescent patch of the eround-colour; a small lateral marginal grey spot in middle. 
Abdomen with much less distinct white lateral spots than in G. claudia. 
Length 8 millim. 
Hab. Panama, Bugaba, Chiriqui (Champion). 
Three females, one broken male. 
4. Gymnognathus femoralis. (Tab. XI. fig. 10.) 
Gymnognathus femoralis, Jordan, Nov. Zool. iv. p. 175. n. 5 (1897) °. 
Two specimens, which are not in perfect condition. They differ from the Colombian examples in having 
the white lateral spots of the pronotum vestigial, the sutural luteous area of the elytra extending to 
the basal edge (there being no brown space around the scutellum), and the lateral spurs of that area 
shorter. 
Hab. Nicaraava, Chontales (Belt); Panama, Bugaba (Champion).—CouomBia, Rio 
Dagua! (Rosenberg, in Mus. Tring). 
