144 ENTOMOLOGICAL NEWS. [November, 



medical journals by legitimate practitioners to the same effect, 

 but the honey bee might not be the most efficacious; in fact, each 

 species may be possessed of a different potentiality and better 

 adapted to the treatment of one disease than to that of another, 

 which might be readily determined by a little empirical experi- 

 menting, and quite probably the greatest remedial virtues would 

 be found in the species producing numb and paralyzing effects. 

 Treatment of this kind can best be conducted in a hospital, and 

 as Hymenoptera of the most desirable species are abundant in 

 many places on the coast and easily cultivated, the establishment 

 there of an enkentric sanitarium is not a future improbability, 

 and in connection with pure ocean air, hot or cold sea-water 

 baths and other adjuvants, could scarcely be else than meritori- 

 ously popular. 



DESCRIPTION OF THE PREPARATORY STAGES 

 OF DATANA CONTRACTA Walker. 



BY WM. BEUTENMULLER. 



Egg. — Same as that of Datana viinistra Dr. Laid in masses 

 of twenty-five to fifty, on the underside of leaf 



Young Larva. — I have made no record of this stage. 



After First Moult. — Head jet-black, shining, as is also the 

 cervical shield. Body brown, with four very pale yellow stripes 

 along each side and three beneath. Abdominal legs dull orange 

 with darker bands. Thoracic feet and anal clasps and plates jet- 

 black. 



After Second Moult. — Appearance yellow. Head same as 

 in the previous moult. Body more reddish brown, also the cer- 

 vical shield. The stripes are comparatively broad, the space 

 between being somewhat narrower. The feet are also reddish 

 brown, also the tips of the abdominal legs. 



After Third Moult. — Head and cervical shield jet-black, 

 shining. Body color pitchy brown, covered sparsely with sordid 

 white hairs. The stripes are now sordid white and equidistant, 

 and as broad as the intervening spaces, except the dorsal space, 

 which is the widest. Body beneath concolorous to the above, 

 with the three stripes much narrower than the intervening spaces. 

 On the 4th, 5th, loth and nth segments are two reddish brown 



