NEMATUS IMPERFECTUS. 105 



van Yollenlioven does not belong to the caprea group. It is to be 

 noted that Thomson places pallicercus between N. miniatus, Htg., and 

 N. croceus, Fall., which is scarcely its natural position. 



38. NEMATUS IMPERFECTUS. 

 PI. I, fig. 3, ? ; PL XIX, fig. 3, Saw. 



Nematus imperfectus, Zaddach, Schr. Ges. Konig., xvi, 80 (1875); 



Andre, Species, i, 187 ; Cat., 

 14 * 20. 



Shining, covered with very short white pile ; pale yellowish-white, 

 the head and thorax rufescent, the vertex, sternum, three almost con- 

 fluent marks on mesonotum, metanotum, and back of abdomen to the 

 eighth segment, black ; apex of posterior tibiae and tarsi fuscous. Wings 

 hyaline, costa and stigma clear white, the last with its outer border 

 brown. Mesonotum and pleurae faintly punctured. The sheath of saw 

 blackish, shortly projecting, the cerci are pale, fuscous at the tip. Over 

 each of the four anterior femora is a short thin black line. 



Length 3 3| lines. 



This insect differs from N. caprece in the pale yellow 

 colour of the abdomen and legs and reddish thorax, 

 as also in the clear white stigma, which is fuscous at 

 the apex, this being never the case with those speci- 

 mens of caprece which have that part of the wing 

 white. In the form of the head, and generally in its 

 body form, it agrees with N. canaliculaius, but the 

 colour is paler and more bleached, the antennas appa- 

 rently are longer in proportion to the size of the 

 abdomen, the head is scarcely so rounded inwardly 

 behind, the sides of the abdomen and belly are free 

 from black markings, while the saw does not project 

 so much, and is very different in form. Zaddach 

 states that all his types had not the thorax punctured, 

 while those which were not punctured varied other- 

 wise from the specimens which I have described 

 above. 



In one of my specimens the abdomen is pale at the 

 junction of the segments, and has all the femora lined 

 above with black. The other two have only the four 

 anterior so marked, and the black mark on the 

 sternum is spotted with red. The <? is yet unknown. 



