P. CAMERON. HYMENOPÏERA I. 



spines fringing the fore tarsi are bright rufous; the upper part of the apical transverse cubital 

 nervure is roundly curved outwardly. 



3. Dielis Iiumboldti sp. nov. 



Humboldt Bay, June. 



Length 12 mm. Q. 



This species lias the hair colouration of D. de-Meijerei, thick white hair on the occiput 

 and collar and on the apices of the abdominal segments, but may be knovvn from it by the 

 2 nd radial cellule projecting largely beyond the cubital, the wings, too, being dark fuscous 

 violaceous. From de-Meijerei and also from albicollis it may further be known by the almost 

 smooth, not punctured scutellums and metanotum. Vertex and upper part of front almost 

 impunctate; the lower half of the latter strongly punctured. Mesonotum not very strongly 

 or closely punctured, the centre at the apex smooth. Scutellum smooth, except for a trans- 

 verse row of punctures at the base and apex. Post-scutellum very sparsely punctured. Base 

 of metanotum almost impunctate except at the sides at the apex. Abdomen almost impunctate 

 on the basai segments, their apices fringed with white hair; the last segment with stiff black, 

 mixed with dark rufous hair. The 2 nd radial cellule is wide; its length along the costa about 

 one third more than the width of the apex; the nervure at the apex roundly curved outwardly. 

 This is a more slenderly built species than albicollis or manokwariensis. The wings are as 

 dark coloured as in albicollis. 



4. Dielis sp. cf. 



Humboldt Bay, June. 

 A cf (13 mm.) does not appear to be the other sex of the 3 species I hâve described. 

 The radius projects far more beyond the apex of the cubital cellule than it does in any of 

 them, it being also more regularly, broadly, uniformly curved, and turned towards the apex 

 of the wing from below. The sides of the clypeus and the apices of the abdominal segments 

 are clear yellow as are also the outer edge of the tibiae. 



Ceropalidae. 

 Macromeris Lep. 



1. Macromeris iridipeimis Smith. 

 Journ. Linn. Soc. 1859, 156. 

 Manokwari, June. cf. 

 M. iridipeimis is considered by BlNGHAM, Fauna of India, Hymen. I, 105, to be a 

 form of violacea Lep. with the hind femora serrate beneath in cf. 



