164 MISCELLANEOUS PAPERS. 



body, which are regularly distributed in longitudinal rows, there 

 being 6 conspicuous rows in all, 4 dorsal and 2 lateral. Measure- 

 ments when not more than 2 hours old : Length of body, 0.G18 mm. ; 

 width, 0.290 mm.; antenna, 0.270 mm.; lateral spines, 0.0T2 mm. 

 Not more than 24 hours old : Length of body, 0.G90 mm. ; width, 

 0.309 mm. ; antenna, 0.290 mm. ; lateral spines, 0.072 mm. 



The young from eggs diifer from the above (those born alive) in 

 that the general color is a dark green, with black spinal markings 

 and with black rings around the cornicles. 



After frst molt and Jf.8-72 hours old. — General color citron-yellow. 

 Eyes brownish red. Antennae as before molt, except that there is 

 now a slight constriction near the distal end of the third segment, 

 where it later divides into 2 distinct segments; also, the circular 

 sensorium of the distal end of the third is on a tubercle or short stalk- 

 like process, and at the apex of the thickened base of the fourth seg- 

 ment is another circular sensorium. Five dark lines occur around the 

 openings of the inconspicuous cornicles. Markings as before. Meas- 

 urements : Length of body, 1.05 mm. ; width, 0.49 mm. 



After second molt and GOSJ^ hours old. — General color canary- 

 yellow. Eyes brownish red. There are still only 4 distinct segments 

 of the antenna?, and the constriction of the third segment is more dis- 

 tinct. Cornicles more distinct than in the earlier stages. Measure- 

 ments: Length of bodj^, 1.45 mm.; width, 0.56 mm.; antenna, 

 0.43 mm. 



After third molt and 12^-11^8 hours old. — General color canary- 

 3'ellow. Eyes brownish red. The constriction of the third antennal 

 segment becomes more distinct. Cornicles more distinct and almost 

 as fully developed as in the adult. Measurements : Length of body, 

 1.96 mm. ; width, 0.74 mm. ; antenna, 0.63 mm. ; abdominal bristles, 

 0.127 mm. 



Adult loingless viviparous female. — General color canary-yellow. 

 Eyes brownish red. Antennae of the same general tint as the body, 

 excepting the last segment, which is darkened; 5-segmented and 

 sparsely hairy, but the few hairs or bristles present conspicuous. 

 Beak short, not extending farther than the coxae of the middle pair 

 of legs. Six conspicuous bristles project forward from the front of 

 the head and between the bases of the antennae. Several less con- 

 spicuous hairs are found below those just mentioned. Dorsally are 

 4 longitudinal curving rows of black transverse markings, 2 rows 

 on each side of the median line. Ten longitudinal rows of erect 

 tubercular bristles are present on the dorsal and clorso-lateral sides 

 of the thorax and abdomen. Cornicles short truncated cones, incon- 

 spicuous except for the dark ring around the opening. Measure- 

 ments : Length of body, 1.818 mm. ; width, 0.763 mm. ; antenna, I, 



