148 Psyche [October 



behind the middle, apices separately rounding, surface minutely 

 alutaceous, finely punctate in rather obscure rows which fade at 

 tip so that the apical area becomes almost smooth and shining. 

 Abdomen above with four full dorsal segments, as well as the basal 

 lateral portion of another, exposed behind the elytral tips, this 

 uncovered surface being strongly shining and sparsely punctate. 

 The segmental edges have a peculiar laminate appearance, as if 

 folded over. The terminal segment is nearly semicircular in out- 

 line and strongly hairy. Underside very shining, sparsely and 

 finely punctured, the prosternal and abdominal apices tinged with 

 yellow. Legs rather slender, the femora and tibiae flattened, 

 front tibiae wider, denticulate and strongly hairy, all the tarsi 

 slender, hairy and with large simple claws. Length, if straightened 

 out, nearly 5.00 mm. 



Compared with the description of the Guatemalan specimen, 

 this insect is considerably larger, attaining a length of about 5.00 

 mm., against 3.25 of the southern form. The coloration is also 

 different and there are some diversities in sculpture and structure, 

 which, however, may perhaps be due to unlike interpretation. I 

 think that the funiculus has six joints in C. championi, though Dr. 

 Sharp, while admitting difficulty in counting, allows only five in 

 C. mollis. He makes no mention of a groove on the posterior half 

 of the head nor of a marginal prothoracic bead. 



NOTES ON THE EGG-PARASITES OF THE APPLE TREE 

 TENT-CATERPILLAR {MALACOSOMA AMERICANUMy 



By L. T. Williams, 

 Omaha, Nebraska. 



The object of the following observations during the spring and 

 summer of 1915 was to make a detailed study of the life-histories 

 of some of the egg-parasites of the apple-tree tent-caterpillar. 

 For reasons which will presently be stated this purpose was not 

 fulfilled; but as some new species were bred from the eggs, a sup- 

 posedly erroneous record of Ashmead's verified, and some other 



1 Contributions from the Entomological Laboratory of the Bussey Institution, Harvard 

 University, No. 117. 



