Entomology of the Illinois River. 



169 



The recorded occuii'ences of this species at Havana 

 throughout the year may be tabulated as follows: 



RECORD OF PARAPONYX OBSGURALIS FOR THE YEAR/ 



La/rva [Fig. 1-5].— Length 15-20 mm., breadth 2-2.5 

 mm. Whitish, slightly tinted with yellowish testaceous, 

 surface subopaque, covered with minute shining points 

 when seen under the microscope; provided with the usual 

 piliferous tubercles, which bear light brown hairs, and 

 with ten long branching filamentous respiratory append- 

 ages on each of the middle segments, transparent white 

 in color, their bases tinted with yellowish. The branches 

 of the anterior supra- and infrastigmals arise from the 

 anterior side of the main stem, while those on the 



*In this and succeeding tables, the dates of recorded occurrence of the species are 

 given, each being followed, in the column headed by the letter of the station where 

 found, by the initial of the stage (E, egg; Y, young larva; L, older larva: P, pupa: I, 

 imago) and a number indicating its abundance (1, rare; 2, infrequent: 3, common; 4, 

 abundant; 5, excessively abundant). The last column is for breeding-cage results and 

 miscellaneous locations. 



