August, '16] JONES: ANASA ANDRESII 433 



Third Nymphal Stage. — Differs from second stage in that dorsal 

 surface of head, thorax, and abdomen is for the most part light grayish 

 green, pruinose. Flattening of second and third antennal joints not so 

 apparent as in preceding stages. Length about 5 mm. 



Fourth Nymphal Stage.— General color darker than in third 

 stage. Third and fourth joints of antenna? slightly flattened. Con- 

 nexivum more pronounced than in preceding stages. Length about 

 7 mm. 



Fifth Nymp'hal J-tage.^ — General color darker gray than in fourth 

 stage, largely due to greater abundance of tubercles on surface of body. 

 Dorsal surface of abdomen also differs from that of fourth stage in 

 having two marginal black spots on each of first six segments, and 

 black on anterior margin of seventh segment. Joints of antennae all 

 cylindrical. Length about 9 mm. 



Adult. — The following description has been made from mounted 

 specimens: 



General color of dorsal surface dark brown, the ventral surface some- 

 what lighter, of a grayish brown. Ground color yellowish brown. 

 Surface of body and appendages (except dorsal surface of abdomen, 

 membranous portion of primaries, and all of secondaries) thickly 

 spotted with small black tubercles from which arise short setae. Outer 

 edges and median dorsal line of prothorax light yellowish brown. 

 Anterior third of dorsal surface of connexivum of abdominal segments 

 2 to 6, inclusive, light yellowish brown. The remaining, dark portions 

 of the upper surface of the connexivum of segments 3 to 6, inclusive, 

 have spots of the same color in their centers. Spine above base of 

 antenna not prominent, scarcely 0.25 mm. in length. 



Average length of ten males 13.4 mm., ranging from 12.5 mm. to 

 14 mm. Average width of prothorax 4.2 mm., ranging from 3.75 mm. 

 to 4.25 mm. 



Average length of ten females 15.7 mm., ranging from 15 mm. to 

 16.5 mm. Average width of prothorax 5.2 mm., ranging from 4.75 

 mm. to 5.5 mm. 



The sexes may be separated, as in the case of tristis and armigera, 

 by the difference in the ventral surface of the terminal segments of the 

 abdomen. 



Life-History 



The period of incubation of the egg was found to vary at Baton 

 Rouge from seven to eleven days during June, July, August and Sep- 

 tember, in a well ventilated insectarj'^ and in outdoor cages, eight and 

 nine daj's being the usual length of time during June and July. 



The length of the nymphal stages varied considerably, depending 

 no doubt upon the temperature and moisture conditions, and upon 



