248 SMITHSONIAN MISCELLANEOUS COLLECTIONS [voL. 48 
Females 
t.. Abdomen “without ‘conspicuous! lateral’ tufts:).< i: cr). 2s os aed e eee eee Bs 
Abdomen ged-tuited) 9552 55/. siesid hapetea ureters ot Ae cea hae ee ee oer 2. 
2; Hind tagsi; rigged” yoithe whitex.ec goin Oy cist eee bales hemorrhoidalis Fab. 
Parsi wither white 2 isos ac ane vac RS dere pele eee ee lynchi n. n. 
3, 0~At deast ‘the: hind tatst-white-markedny.).. J2).0.¢ 07. sie ee ee 4. 
Hind tarsi without white, abdomen mostly purple and coppery-bronze, 
superbus n. sp. 
4. All | the” tarsi-white-marked: (2.22. tc. , frou aa oa bes ce ee ee eee 5. 
Middle and hind tarsi white-marked................ guadeloupensis n. sp. 
Hind) tarsi: only -white-marked!..). ¢o.1 70. ics aces Stee ere haitiensis n. sp. 
5. Segments 2 and 3 of front and middle tarsi white....................... Wh 
Segments 2, 3 and 4 of front and middle tarsi white.:................ 6. 
Segments 2, 3, 4 and 5 of front and middle tarsi white..grandiosus Will. 
6; Abdomen beneath entirely -colden.2 4. ne seamen dete longipes Theob. 
Abdomen beneath with blue median area...............0000008 rutila Coq. 
7. horax\ marked “with: contrasting scolars:ia.)..14ete seer rece eet 8. 
Thiorax -etéen-scaled or the! disGasivre eae itees calor trimdadensis n. sp. 
8. Thorax with well-defined yellowish median and iateral stripes, 
: septentrionalis n. sp. 
@horacic"sifipes blie Os5s tas aeretelenare Be ee ioe Aue moctezuma n. sp. 
In the following descriptions the legs are assumed to be in their 
natural positions, the front legs directed forward, the others pos- 
teriorly. The measurements are for the body exclusive of head- 
appendages. The locality records given are all from the specimens 
on which the descriptions are based. 
MEGARHINUS RUTILA Coquillett 
The original description was obviously drawn up from material 
in part belonging to the form characterized here as M. septentrio- 
nalis. The seven specimens of rutila in the collection are more or 
less faded, and, all but the type (a male), badly damaged. The 
thoracic pattern is as in septentrionalis; the ground color is brown 
with coppery lustre, the light median and lateral stripes show a trace 
of pale blue but it is hardly possible to say what the original colors 
may have been. 
Male.—The abdomen is deep blue above without the change to 
purple towards the tip noticeable in the following species. The 
seventh segment has the hind angles touched with gold and the 
eighth shows a couple of bright mauve spots. Beneath the median 
area is dark blue, the lateral stripes golden—these last are broad- 
ened on the seventh segment, leaving only a narrow stripe of blue, 
while the eighth segment is all blue. Lateral hairs pale yellow on 
all but the eighth and ninth segments, where they are dark. 
