170 [January, 



brown lunule ; a narrow brown band crossing the wing from just beyond 

 the middle of the costa to the first median branch, and appai'ently con- 

 tinued irregularly inwards by two brown dashes between the first and 

 second, and the second and third median nervules ; a brown sub-apical 

 dash ; a fine black lunule on the abdominal fold below the middle ; a 

 black spot at the anal angle, and a small black dot just above it ; a se- 

 cond black spot near the margin, between the second and third median 

 branches ; extreme marginal edge and tails brown. 



Body. White. 



Habitat : White Nile. 



In the collection of the British Museum. 



ON SOME ABERRANT GENERA OF FSOCINA. 



BT DB. H. A. HAOEN. 



(Concluded from page 1-52). 



B. ^lis superiorihis non Icpidotls. 



a. Prothorace transversa, ohlongo, tripartito, non ohtecto. 



Genus Embidopsocus, new genus. 



Head flattened, triangular, broad. Eyes small, rounded. Ocelli 

 placed somewhat close together. Palpi and labrum as in Psocus. An- 

 tennae slender, short ; the two basal joints short, cylindrical ; the thread 

 more slender, crisped ; about 15-jointed ; not ciliated. Pro-thorax 

 transverse, narrower than the head, three times longer than broad, well 

 evident, and on the same level with the head and meso-thorax ; a tra- 

 pezoidal part in the middle, and a rounded part on each side. Meso- 

 thorax cordiform, flattened. Abdomen long, oval, flattened. Superior 

 wings flat in repose, not roof-shaped ; scarcely longer than the abdomen, 

 slender at the base, afterwards dilated, the apex semi-circular ; the 

 membrane is very thin and weak, as in Termes and Embia ; neuration 

 very simple, but the veins strong ; the costa visible as far as the middle, 

 where it unites with the sub-costa, which is prolonged from that point 

 into a branch divided somewhat obliquely towards the apex ; median 

 vein running to the apex, slightly curved downwards, slightly separated 

 from the sub-costa; there is also a small oblique vein at the base of the 

 posterior margin ; all the rest of the wing (even the margin) without 

 veins. Inferior wings slightly shorter than the superior, similar in 

 form ; I see but one weak vein, extending from the base to the apex, more 

 towards the anterior margin. Legs short, the posterior not extending 

 beyond the abdomen; femora enlarged, compressed; tibijc slender; 

 tarsi short, the joints nearly equal, the basal slightly larger and stronger 

 than the others. 



