INSECUTOR INSCITI^ MENSTRUUS 65 



is without perceptible sculpture (Fig. 2). Actual count of 

 the eggs in one cluster gave 182 eggs. 



It may be pointed out that in both types of egg the free end, 

 which, owing to the position of the egg-mass projects down- 

 ward into the water, corresponds to that end of the ordinary 

 Culex tgg which is next the water when the egg-raft is afloat. 

 It is the end of the egg which is burst open by the young larva 

 in hatching, which thus gains direct access to its proper medium. 



It has been already stated that the spiny type of egg be- 

 longs to a distinct species. Professor Moore finally succeeded 

 in establishing this in December, 1915, by confining a female 

 which laid eggs of this type. This female was sent to us and 

 proved to be a species apparently new, described herewith : 



Mansonia humeralis, new species. 



Female. Occiput deep brown, clothed anteriorly and in a 

 median line with narrow-curved brownish-golden scales, the 

 eye-margins and cheeks with small lanceolate white scales ; 

 upright forked scales rather sparse, very slender, black. Pro- 

 boscis clothed with black and yellowish white scales inter- 

 mixed, the white scales predominating at middle but not fonn- 

 ing a distinct ring; scales roughened on basal half. Palpi 

 over one-fourth the length of the proboscis, clothed with out- 

 standing scales, black and yellowish white ones about evenly 

 intermixed. Antennae black, the joints with white basal rings ; 

 tori brown and black, with a few white scales ; second joint 

 with some outstanding white scales. 



Mesonotum deep brown, laterally the integument from 

 humeri to near roots of wings broadly yellow-brown, medianly 

 deep brown and with three slightly pruinose depressed longi- 

 tudinal stripes bounded by the seta-bearing ridges ; vestiture 

 of slender curved scales, the yellow-brown side-areas and 

 slightly beyond them to roots of wings, as well as the ante- 

 scutellar area, clothed rather densely with golden scales, the 

 region above the roots of the wings with a patch of deep 

 brown scales, a few fine golden scales on median zone ; bristles 

 coarse, black. Scutellum deep brown, clothed with golden 



