40 W. WESCHE— THE LARVAL AND 



Eyes strongh^ defined ; under part snbtrianoular at the corner ; accessory 

 posterior pigment spot large and black in some specimens — variable. 



Thorax well differentiated, with the usual plumes ; in some individuals the 

 hairs appear to have lost their pubescence. One specimen shows a sym- 

 metrical pattern on the ventral surface like Pyretoplioriis (PI. YI, fig. 1). 



Abdomen rather long and thin ; plumes on first two segments rather short ; 

 weak stellate hairs on all other segments — very light in colour. Comb large, 

 consisting of a patch of 40-50 scales o£ moderate size (PI. IV, fig. 10). 

 Siphonal plumes fairly large, with plumose hairs ; sub-siphonal plumes 

 similarly haired, and also large. Anal plume consists of a simple triple hair 

 of moderate length. 



The siphon is nearly two-thirds of the length of the abdomen — six units 

 to ten ; it is thin and tapering, a little more than eight times the base in 

 length ; the spines run for just over one-sixth of the length ; there are some 

 minute hairs which appear to be variable ; the valves are small (PL IV, 

 %-10). 



Anal segment long, a little less than twice its base in length ; papillae thin 

 and pointed, compressed at base, unequal ; the longer are slightly shorter 

 than the segment. There are long hairs on the dorsal edge. The beard is 

 inserted on a shield right in the mouth of the segment, and is longer than 

 the papillge. 



Larva 4 mm. long, siphon IJ mm. 



Pupa. 



The pupa has a comparatively small body, long trumpets, and more hairs 

 on the segments than usual ; the plume on the seventh segment is thick but 

 of only simple or subplumose hairs ; the plates are without any ciliation at 

 their edges (PL IV, fig. 11). 



Length of thorax 1^ mm. 



Described from five larvse and one 23upa. 



[Egg-raft found upon water in a tin can containing vegetable matter, 

 in September. The rafts were sharp-pointed and composed of 80 to 120 

 small black cylindrical eggs. — W. M. G.] 



19. Culex dissimilis, Theo: 



Larva. 



Head of fair size, light in colour. Antenna? like ihat of Culex albovirc/atus, 

 Graham, with a big plume and branched hairs at the tip. The mouth-parts 

 have been dissected out and are separately described in the explanation of 

 the plate (PL IV, figs. 2-9). Plumes on the face large, and with the 

 secondary pubescence rather long. 



Thorax markod, with all the plumes big and with very plumose hairs. 



