AEDES AUREOSTRIATA 857 



tube. Chitinous plate of ninth segment narrow, saddle-shaped, widely open below, 

 with long spines along Its posterior border, a large simple hair at the posterior 

 inferior border (corresponding to the digitate hair in H. Walkeri). Ventral group 

 of hairs springing from a diamond-shaped plate. Dorsal group of two pairs, one 

 compound, with short branches, the other pair simple and of great length. Anal 

 papillae narrowly conical, one-third the length of the longest dorsal hairs. Pupa, 

 siphons long and narrow. Terminal appendages ovate, nearly equally divided by 

 mid rib. 



Obseevations. — The first specimen of this fine species was sent by Colonel Los- 

 combe in September, 1905. Recently three larvae were found among a number of 

 H. Walkeri larvae collected by Miss Maclaverty from Bromelias, and sent to me 

 alive. They were isolated and developed into adult insects. The pupa stage In both 

 this species and H. Walkeri is unusually long — 4 days. The chief points of differ- 

 ence between the two species are to be found in the characters of the frontal hairs, 

 hair tufts and siphons. The chitinous covering of the thorax and abdomen of H. 

 aureostriata is entirely devoid of the spicules so conspicuous in H. Walkeri, which 

 give the latter its dark appearance. 



Obioinai, Desceiption of Howabdina inequalis : 



Near H. aureostriata, Gbm. (Can. Ent., May, 1906), but with somewhat broader 

 thoracic lines. The face hairs of the larva are as follows : Anteantennal hair 5- to 8- 

 rayed, upper epistomal hair double, lower about 10-rayed. The compound hair of 

 the dorsal group in the terminal segment Is about 6-rayed. In H. aureostriata the 

 upper epistomal hair Is usually single, and the compound hair of the dorsal group 

 on the terminal segment Is 10-12-rayed. The most notable differences are to be 

 observed in the anal gills, those of H. inequalis being broadly lanceolate and pig- 

 mented, the lower pair only one-half the length of the upper pair, which are one- 

 third the length of the longest hairs of the ventral hair group, while in S. aureo- 

 striata they are nearly equal in size, narrow, slender and transparent, and about as 

 long as the hairs of the ventral tuft. The larvae collected from hollow trees (chiefly 

 Anona palustris, L.) by the seashore, Kingston, have long, slender, pale red bodies, 

 covered with rayed hairs; a pair of large air vessels in the thorax are seen as two 

 conspicuous silvery spots. The females are troublesome blood-suckers in the woods. 

 Length of adult, 2.5 mm. 



Descbiption of Female, Male, and Labva of Aedes aukeosteiata: 



Female: — Proboscis moderate, rather slender, subcylindrical, uniform; 

 labellae conically tapered ; vestiture black ; setse minute, curved, black, those on 

 labellae more prominently outstanding. Palpi very small, one-sixth the length 

 of the proboscis ; vestiture black, setae rather long. Antennas filiform, the joints 

 subequal, rugose, coarsely pilose, blackish ; second joint slightly swollen towards 

 apex, pale yellow at base; tori subspherical, with a cup-shaped apical excava- 

 tion, luteous, brownish within; hairs of whorls sparse, rather long, black. 

 Clypeus elliptical, prominent, blackish-brown, nude. Eyes black. Occiput 

 clothed with broad scales, a median stripe of narrower curved ones, black, a 

 golden-yellow median line, sides and cheeks yellowish silvery-white scaled 

 and inclosing a large black patch near ocular margin; bristles along margins 

 of eyes coarse, black, those projecting on vertex pale golden. 



Prothoraclc lobes elliptical, remote dorsally, brown, with a patch of broad 

 silvery-white scales in the middle and some black setae. Mesonotum pale 

 brown, clothed with narrow, curved, dark bronzy-brown scales, six narrow 

 subparallel lines of golden-yellow scales, the outer pair marginal, the median 

 pair converging slightly and extending from anterior margin to near ante- 

 scutellar space, followed by a single line extending over antescutellar space, a 

 line on either side of antescutellar space continued forward to beyond middle 

 of disk, marginal lines extending from roots of wings nearly to apex ; bristles 

 over roots of wings sparse, rather long, black. Scutellum trilobate, brown, 

 clothed with flat deep brown scales, middle lobe with a central line of golden- 

 yellow scales, each lobe with a group of black bristles. Postnotum elliptical, 

 dark brown, nude. Pleurae brownish, coxae luteous, with patches of broad flat 

 white scales and rows of pale bristles. 

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