l66 RESEARCHES IN HELMINTHOLOGV AND PARASITOLOGY. 



under logs in the forests in the vicinity of Philadelphia, I detected 

 another species of the above, which may be distinguished as follows: 

 Anoplophrya Melo. — Oval or ovoid, scarcely twice the length of 

 the breadth, with the narrower pole mucronate ; nucleus axial, 

 cylindrical, sigmoid, about two-thirds the length of the body ; con- 

 tractile vesicles, usually one or two or none, large. Length 0.048 

 ram. to 0.08 nmi. : breadth 0.032 to 0.04 mm. Pairs in state of 

 transverse division 0.08 by 0.036 mm. to 0.084 b)' 0.04 mm. In- 

 habiting the body cavity of Lumhricusf . (Drawing.) 



[September, 1882. No. 499. See Bibliography.] 



On the Tobacco-worm, cti. — Prof. Leidy exhibited a collection of 

 tobacco-worms, the larvse of Sphinx Carolina, which he had obtained 

 two days ago from a tobacco field near Columbus, N. J., where 

 they were very abundant and had proved a great pest in the culti- 

 vation of tobacco. The worms collected presented a number of 

 well-marked varieties, which were supposed to be all of the same 

 species. The principal ones were indicated as follows : 



r. Pea-green or yellowish-green, more or less finel}' hairy, with 

 lateral oblique white bands bordered above with black dots, which 

 extend to the dorsal m.edian line ; head bright pea-green, dorso- 

 caudal spine red. This is the most common variety. 



2. Pea-green, smooth, with lateral oblique white bands joined in 

 front below by horizontal white bands, .so as to form a series of 

 V-like marks, the apex of each joining the lower limb of the one 

 in advance ; head green, dorso-caudal .spine black. 



3. Grass-green, smooth, with lateral white V-like marks as in 

 No. 2, the oblique bands bordered above by blackish or brownish ; 

 upper part, especially in front, more or less dotted with white : 

 head green, with a pair of black bands on each side : dorso-caudal 

 spine black. 



4. Yellowish-green annulated with narrow black lines, with lat- 

 eral white V-like marks, the oblique bands bordered above with 

 black ; head bright pea-green, dorso-caudal spine red. 



5. Dull green, with more or less brown dorsally, and dotted with 

 white, the dots more or less tuberculate, but otherwi.se smooth, 

 with lateral white V-like marks, the oblique band bordered above 

 with brown a.scending to the dor.sal median line; head green, with a 

 lateral pair of black bands ; dorso-caudal spine black. 



6. Chocolate-brown to nearly black, smooth, with white dots 

 dorsally and anteriorly, with lateral white V-like marks; head shin- 

 ing black on each side, dorso-caudal spine shining black. 



