28 W. WESCHE— THE LARVAL AND 



The abdomen is haired in the same manner as the thorax ; the hairs being- 

 stiff and short, stout at the end, and o£ a dark colour, give this larva quite a 

 spiny appearance. Comb with a single row of about eight very long scales, 

 but the exact number is uncertain (PI. Ill, figs. 9 & 10). 



The siphon is short and stout, being less than J o£ the length o£ the 

 abdomen ; and less than 2 J times as long as the base ; the spines are incon- 

 spicuous and difficult to see, but are exceedingly close to each other and run 

 in a curve for about half the length ; there are long double hairs laterally ; 

 valves very small (PI. Ill, fig. 8) . 



The anal segment is as long as it is broad, with four stout papilla3 which 

 are a trifle longer than the segment and subequal (papillse short and subequal) ; 

 in the two larvse examined they have a spotted appearance, but this may 

 be accidental. There are eight long simple hairs on the dorsal edge; ventral 

 beard thin, consisting of 12-lG very long hairs. 



Length of larva 3J mm. 



Pupa. 



With short tubes; the hairs at the base of the thorax are well marked, 

 forming a series of plumes ; the plumes on the seventh segment are also 

 noticeable ; but the most characteristic thing is the ciliated anal plate (PL III, 

 fig. G), the rib or thickening of which is also unusually chitinous (PL III, 

 fig. 5). A second pupa is figured to show the variation in the shape of the 

 thorax (PL III, fig. 11). 



Length of thorax less than 2 mm. 



Described from four larvae and two pupae. 



[Larvae found in the water contained in the butt end of a large bamboo, 

 <3arly in June. The bamboo was cut through with a saw between the internal 

 discs. These larvae developed very slowly in the glass jar. Larvae of 

 Scutomyia marshalli, Theo., were also present. — W. M. G.] 



6. Stegomyia apicoargentea, Theo. 



Larva. 



Head rather small, very chitinous and semiglobular, so that the brushes do 

 not usually show, when they are looked at from the dorsal side. Antennae 

 simple, without a plume, and with only a few short hairs at the tip ; all the 

 part is dark, but is of a lighter tinge at the end. 



Thorax with the usual plumes, but these are of simple hairs — at the most 

 there may be a little secondary pubescence on the lower part of some, and a 

 few may be seen with very careful focussing to be subpubescent. 



There are short double and triple hairs on the sides of the abdominal seg- 

 ments, and there are longer double hairs on the ventral surface, all simple. 

 The siphonal and sub-siphonal plumes are also simple. 



The comb is very difficult to make out from a lateral view, but by propping 

 up the larva on a much twisted and bent piece of metal I was able to count a 

 row of ten, rather peculiarly shaped scales (PL V, fiirs. 11 & 12). 



