487 



subcqual. others successively shorter, last two quadrate, chil) with three 

 closely fused joints, ovate, funicular joints 5 and beyond and the club 

 joints with rows of elongate sensoria, a few also on 3 and 4; man- 

 dibles short and stout, tridentate, the two upper teeth I)lunt, tlie lower 

 one more produced and somewhat acute; lal)ial i)ali)i .^jointed, third 

 joint about as long' as tlie other two, second sliort and oblique; maxil- 

 lary palpi 4-joinled. the last joint about as long as tlie other three 

 expanded subo\al witli one side straight. 



Thorax more than one and a half as long as wide; pronotum 

 quadrate, with a transverse median ridge upon wbicli are two pencils 

 of long erect blackish bristles, impressed behind the ridge ; mesonotum 

 oblong, slightly narrowed behind, rounded in front, excavated behind, 

 a short furrow in the bottom of the excavation, lateral margins abruptly 

 deflexed at an acute angle and the extreme edge then reflexed, a row 

 of erect silvery cilia in the furrow thus formed, there is tlnis a profound 

 furrow between the disc of the mesonotum and the prepectoral plate 

 and the large elongate tegula ; axillary furrows confluent in front, the 

 scutellum therefore not reaching the mesonotum ; a brush of about three 

 close-set rows of erect silvery cilia on the mesosternum along the 

 sternopleural suture. 



With one pair of rudimentary wings about as long as the scutellum, 

 consisting of a basal chitinous portion bearing a stout erect blackish 

 bristle and an apical hyaline portion of about the same length with a 

 longitudinal sul)median vein, ciliate witli erect silvery cilia. 



Legs slender, anterior femora slightly thicker; plantar surface of 

 middle tarsi with a sliallow groove, basitarsus swollen with the margin 

 of the groove ciliate with very fine hairs but very little different from 

 those of the general surface of the joint, without the spines character- 

 istic of the Eiipclmimic, a minute black dot on either side of the plantar 

 surface of the basitarsus and the second tarsal joint a little before the 

 apex, a single fine bristle on either side of the plantar surface of the 

 second and following tarsal joints near the apex, apex of middle 

 tibiae within bearing a row of short stout black spines, the calcar a little 

 longer than the basitarsi ; tarsi of hind legs bearing two feeble calcaria. 



Abdomen with the first tergite deeply excised, 2d-4th decreasingly 

 sinuate. 



The genus runs to Charitopiis in Aslimead's tallies of Bitpchiiinae 

 but would seem to differ by the excavated mesonotum as well as the 

 rudimentary wings in the female. From Eupclminus the absence of 

 plantar spines on the mic'dle tarsi, the more elongate and less excavated 

 mesonotum, the less elongate axillae, and the excised tergitcs and other 

 characters abundantly separate it. 



The two species referable to this genus are distinguishal)le thus: 



Tegulae, prepectoral plates, and sides of mesonotum metallic, 

 pronotal bristles about as long as the pronotum C. siveseyi 



Tegulae, prepectoral plates, and sides of mesonotum yellowi.sh, 

 pronotal bristles shorter C. tcrryi n. sp. 



