144 TRICHOPTERYGIDA. 
Trichopteryx fenestrata. 
Acratrichis fenestrata (Moritz), Motsch. Bull. Mosc. xl. part 2, p. 180°. 
Hab. Panama (Motschulsky +). 
Trichopteryx pusillima. 
Acratrichis pusillima, Motsch. Bull. Mosc. xli. part 2, p. 180. 
Hab. Panama, Obispo (Motschulsky 1). 
NEPHANES. 
Nephanes, Thomson, Skand. Col. i. p. 62 (1859), & iv. p. 100 (1862). 
Body oblong, pubescent. Head large, sessile, and prominent; eyes generally large. Thorax usually small, not 
dilated at the base. Scutellwm large, triangular. lytra truncate, generally short. Wangs long, lanceo- 
late, fringed with long black sete. Abdomen generally much exposed. -Antenne 11-jointed, with the two 
basal joints very large and the intermediate joints slender; club elongate, moniliform. Palpi: mawillary 
4-jointed, with the penultimate joint very large; apical joint long, acicular; Jabial long and slender, 
arising from elongate processes of the labium, 3-jointed, with the apical joint ovate-acuminate. Prosternum 
rather large; episterna large, triangular; epimera moderate, enclosing the coxal cavities. Mesosternum 
large, elevated between the cox; episterna very large, humeral; epimera very large, extending to the 
coxal cavities. Metasternum rather short, transverse, extending to the sides of the body; episterna 
narrow, concealed by the elytra, with their interior apical angles alone visible ; ep¢mera narrow, with their 
extremities alone visible beyond the metasternum. Venter composed of six segments ; 1-5 equal to each 
other in length, the apical segment much longer. Legs generally robust ; posterior coxee moderately lami- 
nated ; tibie armed with spurs; tarsi 3-jointed, with the two basal joints very small. 
This genus contains four described species, one from Europe and three from North 
or Central America. 
The two species described below are very dissimilar in appearance, but I have not 
been able to find any anatomical difference of sufficient importance to warrant their 
generic separation. For this reason I have placed WV. pudescens in the present genus, 
although in superficial appearance it differs very much from J. flaviventris and from 
every other species of Nephanes. 
Body clothed with scattered hairs. . . . . . . « flaviventris. 
Body clothed with dense pubescence . . . . . . . pubescens. 
1. Nephanes flaviventris. 
Elachys flaviventris, Motsch. Bull. Mosc. xli. part 2, p. 183°. 
Nephanes flaviventris, Matth. Trans. Am. Ent. Soc. vii. p. 142 *, 
Very short, convex, shining, brassy-castaneous, with the shoulders of the elytra rufous, clothed with short 
pale hair; head moderate ; eyes not prominent; thorax rather longer and broader than the head, widest 
at the middle, closely covered with small tubercles ; elytra very short, quadrate, rather shorter and not 
broader than the head and thorax, contracted towards the apex, the shoulders rufescent, deeply asperate in 
remote transverse rows; abdomen much exposed, flavescent; legs bright yellow; antenne dusky, with 
the two basal joints bright yellow. Length ;‘¢ lin. =0-50 millim. 
Hab. Nortu America, New York 1.—Guatemaa ?, San Gerénimo (Champion). 
