146 THE CANADIAN ENTOMOLOGIST. 



Mr. Wood-Mason found in July at Jubbulpore, E. India, a number of 

 larv£e on a sandy spot, which were determined by McLachlan, Proc. Ent. 

 Soc, 1879, p. 53, as possibly belonging to O. Saundersii. They show 

 not the slightest traces of wings, although the asymmetry of the caudal 

 appendages is quite apparent. Later winged specimens, being undoubt- 

 edly O. Saundersii, were captured ; all were males of the same uniform 

 brown color. The male sexual characters of alcoholic specimens are 

 described. The abdominal asymmetry is carried to an extreme ; not only 

 are the caudal appendages unequal on the two sides, but the tenth dorsal 

 and the ninth ventral segment also depart widely from symmetry, especi- 

 ally the former, which is incompletely divided by a deep angular notch 

 into two unequal and greatly dissimilar parts (Wood-Mason, 1. c, p. 632). 

 The wings are described and figured in detail. 



This is in fact all known about this species, except the communication 

 by Mr. Lucas, to be recorded later. I received from S. E. Borneo eight 

 specimens, collected in September and December. All are winged males. 

 Their different color induced me to name them as a new species, O. 

 Bomee?isis, especially as mine are well preserved in alcohol, and Wood- 

 Mason's, of the same uniform brown color, were also in alcohol. Thirty 

 years ago I twice studied the type of O. Saundersii, which was in good 

 condition, and also the type of E. Latreillii, Ramb. As I do not find 

 my notes, I believe it more prudent to unite the Borneo speci- 

 mens with O. Saundersii, the more so as Rambur's description agrees. 



Male imago: Length, with wings, 7-10 mill.; exp. of wings 11-16 

 mill. Head little longer than broad, behind the eyes rounded, about 

 semi-circular ; lightly convex above, hairy ; yellowish-orange, the front 

 part to behind the eyes dark reddish brown ; clypeus pale ; labrum pale, 

 with a large brown middle-spot ; max. palpi brown, articulations pale, the 

 two apical joints a little longer than the three basals together ; these are 

 equal, as long as broad ; apical joint ovoid, a little longer than the pre- 

 ceding one ; labial palpi similar in color, apical joint ovoid, larger and a 

 little longer than the two basals together. Antennae much longer than the 

 head, reaching the metathorax, densely hairy, 19-jointed (only one speci- 

 men has so many joints), brown, articulations paler; basal joint blackish, 

 ahttle thicker, cylindrical; 2nd very short, 3rd longer than ist, ob-conical; 

 the next two or three joints equal, shorter than 3rd ; all the rest as long 

 and thick as 3rd. Prothorax much narrower than the head, longer than 

 broad, with a transversal sulcus after the apical third, where the sides are 



