03 I On a new Species of BlepUarocerldae. 



rouiul and covered with a short dense pubescence, except the 

 last two joints, which are almost bare and in the male sli.ajhtly 

 larger than the others. Palpi apparently 4-)ointed, a little 

 shorter than tlie proboscis; first, third, and fourth joints 

 about equal in length, second twice as long ; a little paler in 

 colour at the base. Proboscis nearly twice as long as the 

 vertical diameter of the head. Front rather broader in 

 female than in male. Tliree large ocelli present, placed in an 

 equilateral triangle. Pubescence of eyes short, whitish, 

 rather dense. Thorax : ground-colour blackish grey ; meso- 

 notum with velvety black markings, consisting of a median 

 longitudinal band, bifurcated posteriorly, and two pairs of 

 lateral patches ; the posterior pair is sometimes more 

 brownish. Abdomen velvet-black, the incisures greyish 

 black. Wings clear, the " secondary venation " hardly 

 discernible even with a lens. H alter es d,&.x\i brown, the knob 

 elongate, black. Legs dark olive-brown, with a short black 

 ))ubescence. Claws of female longer and thinner than those 

 of the male ; in tiie male the claws of the fore and mid legs 

 bear several spines on the under side. Length of body 2'5— 

 3*5 mm. ; of wing 4*5 mm. 



Larva. — Much resembles those previously described and 

 figured; there are, however, only two joints in the antenna. 

 Each segment bears a median ventral sucker and a single 

 latcro-ventral prominence on each side hairy at its tip. On 

 the ventral side of the last segment are four nearly spherical 

 anal papillaj; the anal segment is not distinctly separated 

 from the preceding one. Each segment (except the cephalic 

 and the anal) bears a pair of tufts of gill- filaments on the 

 ventral surface near the anterior margin ; there are five 

 filaments in each tuft. Length of full-grown larva 6 mm. 



The young larvas do not seem to differ structurally from 

 the full-grown ones. 



Pupa. — Ancglus-&\\a])e(\. Two pairs of respiratory pro- 

 cesses on the dorsal surface of the head-segment. Tiiree 

 pairs of suckers on tiie lateral edge of the ventral surface, 

 situated close to the anterior margin of the second, third, and 

 fourth abdominal segments. Length 4 mm.; breadth :^'5 mm.; 

 height \2 mm, 



Tgj>e in the British Museum. 



EXPLANATION OF PLATE XX. 



Fi;/. 1. Female imago. 



Fii/. 2. Ilypopygium of male. 



Fiff. 3. Claws of male: a, front, l>, mid, r, hi:ul legs. 



Fiff. 4. Larva, dorsal view, {x 9.) 



Fi(/. 5. Pupa, dor.sal view ( x 0) ; 5 a, respiratory processes, side view. 



