Sept. igoo.] Dyar : LiFE-HisTORY OF Lacosoma Chiridota. 170 



brown. Skin smooth, segments 3-annulate, setae short and pale but 

 distinct and with enlarged tips ; i, ii and those of the cervical shield 

 and head are especially short and paddle -shaped. Toward the end 

 of the stage the larva enlarges the net, spinning cross threads nearly 

 up to the anchors, strung with frass. 



Stage II. — Head .5 mm. As before, the dorsal setje with en- 

 larged tips. Dorsal half of body brown with several fine, pale lines ; 

 subventral region whitish. Shape normal, the cervical shield large, 

 not cornified ; anal end tapering, not truncate ; segments 3-annulate, 

 annulet i large ; feet short, dark brown. 



Stage III. — Head .8 mm., pale brown, dotted and with two nar- 

 row pale yellowish lines that continue the addorsal lines of the body ; 

 a spot circled by pale on each side of the apex of the clypeus ; setae 

 pale, the upper ones with bulbous tips. Body striped longitudinally 

 with brown and pale yellowish ; a geminate brown dorsal line ; a 

 broad subdorsal one, continuous with the brown sides of the head ; 

 subventral ridge prominent, pale ; all with sparse pale granules. Joint 

 2 is as wide as the head, the posterior half of the body widened later- 

 ally ; joint 13 small; subventral region brown, contracted. Setse 

 short, pale. Net 10 x 13 mm. in size (Plate VI, fig. 4). At the 

 end of this stage larva cut a "slit from the edge of the leaf to the 

 eaten part under the net, being the first indication of a tendency to 

 form a case. The larva also fastened the leaf firmly to the twig. 



Stage IV. — Head 1.2 mm. , pale yellow, thickly dotted with brown, 

 leaving yellow lines on the sutures and in a vertical band on the face 

 of each lobe. Body yellow, dotted with brown, forming four irregular 

 and broken lines between the yellow dorsal line and substigmatal 

 fold, a little heavier on the thorax and obscurely appearing to meet 

 around the posterior end of the body. Anal plate large, yellow ; cer- 

 vical shield striped like the body. Tubercles small, dark, in pale 

 areas ; iv and v in line, somewhat approximate, with swollen apices. 

 Segments annulate, granular from the primary tubercles. Subventral 

 region dark brown, retracted and invisible from above. 



Stage V. — Head 2.1 mm., greenish yellow with dark brown 

 mottlings in vertical streaks, leaving irregular pale areas. Body yellow, 

 lined longitudinally with brown ; addorsal, subdorsal and lateral lines, 

 the intervening yellow lines narrow and somewhat oblique, the brown 

 dark only on the anterior third and posterior tip of the body, fainter 

 luteous centrally ; subventral ridge rather prominent, subventer dark 



