MOSQUITOES AND THEIR EXTERMINATION. 465 



sary just forward of the respiratory siphon with its powerful mouth 

 parts, and working the tail in first it would gradually swallow its 

 victim, shaking it now and then as a terrier would shake a rat. 



After losing many of the insects in this way, those that re- 

 mained were separated, and each individual was placed in a small 

 bottle by itself. Eventually, 1 succeeded in rearing a number of 



Fig. 15. E'lcorcthrii uiuleriuoodi. Coyuii.i.ETT MS. ORIGINAL Bkawing. 



males and females. The pupal stage of this insect varies from five 

 days and nine hours to six days and ten hours. The adult (see Fig. 

 15) resembles Anopheles in having maculated or spotted wings, but is 

 much larger and measures eleven millimeters in length. Its mouth 

 parts, however, are not adapted for biting. A full description of the 

 imago is soon to be recorded by Mr. D. W. Coquillett, of the National 

 Museum, by whom the name above mentioned was given. 



VOL. LXIII.^ — 30. 



