32 W. AVESCHK — THE LARVAL AND 



be seen with difficultj ; the scales are large, and taper somewhat suddenly 

 from a broad base to a point. 



The siphon is characteristic ; rather short and stoutj and four times as long- 

 as its base ; remarkably long strong spines reach halfway up ; between the 

 rows of spines are two plumes of stiff straight hairs which have some 

 pubescence on them ; the valves are small (PL I, fig. 16). 



The anal segment is short, only slightly longer than its base, with four 

 very long hyaline papillae, which are 4| times as long as the segment ; there 

 are some hairs on the dorsal edge which are longer than the papillae in sorne 

 specimens and shorter in others, and a moderate beard and some shorter hairs 

 on the ventral side, all simple. 



Length of larvte, which are very curved, 3 mm., siphon f mm. 



Pupa. 



This is rather characterless and light in colour ; the plume on the anal 

 segment is very small, with only a few simple hairs ; the trumpets are small 

 (PL I, figs. 17 & 18). 



Length of thorax 1^ mm. 



Described from three larvae and three pupae. 



[Larvae found in borrow-pits along the side of the railway from June to 

 middle of July. The behaviour of the larvae is peculiar. They very rarely 

 come to the surface of the water, but lie upon their backs at the bottom 

 with the anal gills widely expanded, or crawl sluggishly about upon the sides 

 of the jar.— W. M. G.] 



11. Culiciomyia freetownensis, Theo. 



Larva. 



Head moderate in size and rather dark in colour. Antennae all pale, with 

 the usual fan-shaped plume, the hairs being only moderately plumose and 

 the secondary hairs fewer and shorter ; with three short simple hairs and a 

 short spine at the tip. On the face, six plumes of moderate length (plumose) 

 may be seen from a dorsal view, and behind these a pair of small stellate 

 hairs, close to each other, lie on each side of the median line. 



Thorax much as in Culex pullatus^ Graham. 



The abdomen with large stellate subplumose hairs on segments 3 to 7;; 

 there being two hairs on each side of each segment, one near the dorsum and 

 the other lower down. Sub-siphonal plumes long, but containing few hairs ;. 

 siphonal plumes also thin ; the anal plumes are subpubescent, but this is^ 

 very difficult to see, and is more marked in some specimens than others. 

 Comb difficult to see laterally; from the dorsal view, it shows as a number 

 of curved spines. 



Siphon short and stout, scarcely three times the base in length, with, 



