LARVAL AND PUPAL STAGES, MYZORHYNCHUS BANCROFTI. 173 



Taylor was working with a species of which, except for the 

 female, little else was loiown. He is further of opinion that, 

 now we are in a position to compare larval forms of both 

 mosquitoes, and having already made a comparison with the 

 brief intelligence he could glean from Theobold's Monograph 

 of the Culicidse of the World (iii, p. 86), relating to larval 

 barbirostris, there is every reason for rejecting Taylor's 

 synonymy on the differences observed in frontal hairs 

 (p. 18 I.e. fig. 4f) and palmate hairs alone. Theobold's 

 descriptions are unfortunateh^ too brief, nor has the writer 

 been able to obtain any other literature on the subject of 

 larval forms of M. barbirostris. Nevertheless, it is only 

 reasonable to conclude on the transmutation hypothesis 

 that, when obvious differences are manifested in two larvae, 

 the imagines resulting from these forms will be more or less 

 different. 



