114 



MB. It. M'LACHLAN ON NEW FORMS, ETC., 



Abdomen blackish fuscous, clearer beneath, clothed with black hairs : 

 last segment above fringed with long, blackish, curved hairs : inferior 

 appendices very large, longer than broad, yellow, concave internally, 

 the superior margin rounded, apical margin deeply excised, superior 

 angle produced into an incurvated tooth turned inwards, these ap- 

 pendices clothed externally and fringed with long blackish hairs ; 

 penis subobtuse, the point visible below the app. inf. (PL II. 

 fig. 5.) 



Anterior and posterior wings uniformly fuliginous, subdiaphanous, 

 clothed, but not densely, with short brownish pubescence, which 

 becomes somewhat golden on the costal margin of the anterior wings ; 

 and in these wings the pterostigma is indicated by a narrow yellow 

 space; fringes brownish-grey, becoming pale grey towards the anal 

 angle of the posterior; veins fuscous. 

 I have one male, from California, sent by Mr. Henry Edwards. 

 It differs from JV. griseola by the uniform smoky colour of the 

 wings, and in the form of the appendices. 



Nosoptjs, gen. nov. 



Calcaria 1, 4, 4. Antennarum articulus basalis elongatus, hir- 

 sutus. Palpi maxillares parvi, ad frontem arete applicati : 

 labiales valde elongati, compresso-dilatati, squamati ; articulo 

 basali parvo, 2° elongato, dilatato, 3° ad apicem acuminato. 

 Pedes antici tibia brevissima calcare singulo uncinato in- 

 structa, tarsorum articulus basalis valde dilatatus, intus sul- 

 catus, infra dense cerato-squamatus : intermedii posticique 

 graciles. Alas antics ovales, hirsutae ; cellula discoidali oc- 

 clusa, angustata, cellula thyridii perelongata; cellulis sep- 

 tem apicalibus : posticae in medio dilatatae ; cellula discoi- 

 dali parva, occlusa ( o* ). 



Head densely clothed with long hairs; antennae not so long as the 

 wings, moderately stout, the apical half subserrate internally, basal 

 joint nearly twice the length of the head, strong, hirsute, the suc- 

 ceeding joints short and transverse ; eyes small and round ; maxil- 

 lary palpi very small, somewhat clavate, directed upwards and lying 

 closely applied against the face, clothed externally with long and 

 strong hairs ; labial palpi very large and long, densely clothed with 

 scales, the basal joint short, second very long, compressed and di- 

 lated, third about as long as the second, and equally broad at the 

 base, but gradually acuminate to the apex. Legs: anterior pair ab- 

 normally constructed as follows : — the coxa elongate, and ordinary ; 

 the trochanter small and cup-shaped ; femur long, moderately slender, 

 gradually diminishing from base to apex ; tibia very short, sub- 



