BY E. MEYRICK. 1109 



HYDROCAMPIDAE. 



Tetrernia, n.g. 



Forehead vertical ; ocelli present j tongue well-developed. An- 

 tennae J, in g filiform, moderately ciliated (1). Labial palpi 

 moderate, curved, ascending, slender^ with appressed scales, second 

 joint slightly roughened in front, terminal joint moderate, tolerably 

 pointed. Maxillary palpi rudimentary. Posterior tibiae with 

 middle-spui's nearly equal, (terminal spurs absent, possibly broken, 

 only one posterior leg being present), all tarsi very long. Fore- 

 wings in ^ with a small glandular swelling near base, a small 

 costal projecting tuft of hairs at J, and small basal tuft on inner 

 margin ; vein 1 simple, 3, 4, 5 closely approximated at bfise, 6 

 and 7 approximated at base, 9, 1 0, and 1 1 rising out of 8. Hind- 

 wings 1 ; veins 4 and 5 stalked from near 3, 7 out of 6 near 

 origin, anastomosing with 8 to middle. 



The neuration is to be regarded as the distinguishing character- 

 istic of this genus. 



Tet7\ teminiiis, n.sp. 



(J. 13 mm. Head, palpi, antennae, and thorax pale whitish- 

 yellowish. (Abdomen absent.) Legs whitish, anterior pair with 

 apex of joints black. Forewings elongate-triangular, narrow at 

 base, costa posteriorly gently arched, apex obtuse, hindmargin 

 obliquely rounded ; ochreous-yellow ; a suffused dark fuscous 

 streak along costa from base to beyond middle ; an obscure white 

 posteriorly dilated suffusion in disc above middle, extending from 

 near base to f, posterior edge parallel to hindmargin ; a quadrate 

 yellowish spot in middle of disc, interrupting this suffusion, mar- 

 gined on both sides and above with dark fuscous; an evenly broad 

 curved white black-margined fascia at I, parallel to hindmargin, 

 not quite reaching costa or inner margin ; an interrupted black 

 hindmarginal line : cilia whitish, with a grey line. Hindwings 

 ochreous-yellow ; basal half white, bounded by a nearly straight 



