526 ENTOMOLOGICAL NEWS. [September, 



stages ; dorsal yellow green blanket edged broadly with yellow ^ 

 then narrowly with black-green ; depressed dots (i), (4) and 

 (6) black ; dorsum of 3 to 5 purple. Horns all more or less 

 blue, the spines salmon-colored ; sides of the lateral horns dark 

 green, subventral ridge lighter with a white line. Joint 2 in 

 front pinkish, the cervical shield bisected into narrow, black 

 brown divergent bars. Head 3.5 mm. wide. The dorsum of 

 joints 2 to 5 is obliquely flattened, 11 to 13 sloping down; 

 subventral space small and contracted. Horns short, sessile, 

 all moderate and well spined except the subdorsals of 6 to 10 

 which are absent or represented by a few short spines. Head 

 well retracted in the hood of joint 2. Spiracles round, reddish, 

 that of 5 in the place of the lateral horn. Skin spines very 

 dense, enlarged at the bases, becoming granules subventrally. 

 Apices of the subdorsal horns bare or with a few large caltropes. 

 Horns all distinctly shorter than before. Length 24 to 32 mm. 

 Cocoon with the characters of the group, spun with a veil as 

 in 5". stimulea. The location, exposed on a branch, is foreign 

 to the habit of most Cochlidiidas inhabiting temperate coun- 

 tries, but is often seen in tropical forms. 



PARASITES. 



Berg records the Dipteron Systrophtis nitidus Wied as bred 

 frequently from the cocoons. Two specimens of this fly (de- 

 termined by Mr. Coquillett) emerged from my material. The 

 fly comes out by the lid of the cocoon and its hard pupa case 

 projects in the same way that that of the moth would have 

 done. The fly appears later than the moths, about the time 

 that the lar\^3e are in stage H, so that the egg is doubtless 

 deposited at this early period. 



EXPLANATION OF PLATE. 



Ten figures .showing the successive .stages of the larva of 

 Sibhie fnsca. The figures do not show the growth of the 

 larva, Ixring all drawn the .same size, the relative magnification 

 of each stage l)eing less than the preceding. Stage I is mag- 

 nified about 35 diameters and stage X about 2 diameters. The 

 larva: are not all drawn at tlie same period of the .stage, .some 

 (as fig, 9) being only .slightly grown in the stage and conse- 

 quently flat, others (as fig. 10) being well filled out. 



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