1895. PROCEEDINGS OF THE NATIONAL MUSEUM. 125 



TRITHEMIS FERRUGARIA, Rambur. 



Lihellula ferrugar'm, Rambur, Nevropt., 13.82,1842. 

 Triihemis ferrugaria , KlKUY, Cat. Odou., p. 19, 1890. 



Locality. — Seven males and two females, from Kllimaujaro. 



Male. — Vertex, froiis, iiasus, and occiput reddish brown. Tij) of ver- 

 tex sliglitly concave from side to side. Frous very similar to that of 

 LlbcUnJa crythrmt, Brulle; deeply grooved on tlie median line, forming 

 a well-marked tubercle on either side, which is separated from the ver- 

 tex by a transverse groove. Ehinarium, labrum, labium, and rear of 

 head ocher brown. 



Thorax brown. Hind margin of prothorax more or less bilobed. 



Feet light brown or reddish, spines black. 



Abdomen trigonal, not inflated at the base when viewed from above, 

 and but little when viewed from the side, gradually tapering to the 

 apex; brown (probably red- 

 dish in life), marked with 

 black as follows: A line on 

 the dorsal carina of the mid- 

 dle third of 3 (and sometimes 



of 2), of the basal half of 4-7 i,i„.4. rig. 



and of the greater part of 8; trithemis ferrugaria. 



a median dorsal spot or Ime (4)S,dev,ewi,reen,taha, male-, (S) side v.ew of l^ist two abdomlnslseg- 

 i. J? ri '"<="''' a'"' ''ulvar lamina, female. 



on the greater part ot 9; a 



line on the middle of the lateral carin;i^ of 3-8. Venter black. Some- 

 times a black spot on sides of 2. Two and three with the usual median 

 transverse carina each. 



Genitalia of 2 a little prominent, very similar to those of erythra'a, 

 Brulle. Anterior lamina short, margin entire, straight. Hamule with 

 the internal branch rather slender, simple, curved inward and back- 

 ward, apex acute; external branch longer, thicker, somewhat lamellate, 

 directed backward, concave from side to side anteriorly; apex broad, 

 moderately acute, extreme tip being on the postero external side and 

 directed outward. Genital lobe projecting as far ventrally as the 

 external hanuilar branch, apex rounded. 



Superior appendages reddish, a little longer than 0; straight, dilated 

 on tlic inner and lower sides before the apex, which is acute, and bear- 

 ing on tlie lower surface 8-10 black denticles. Inferior appendage 

 J-ji shorter, about half as wide at its base as it is long, tapering grad- 

 ually to the apex, which is slightly ui^curved, ending in the usual two 

 denticles, which reach beyond the last denticle on the superiors. 



Wings hyaline; reticulation reddish brown near the anterior margin, 

 becoming blackish posteriorly. Pterostigma light brown. Mem- 

 branule gray. Front wings with a yellowish tinge at extreme base. 

 Hind Avings with a ferrugineous basal spot, extending outward to the 

 arculus and from the anterior margin nearly to the posterior. Sectors 



