502 ENTOMOLOGICAL NEWS. * [june, 



apex, in male black with marginal yellow spots. Beneath light yellow in 

 female, black' in male. Legs yellow with black points at base of spines. 



Genitalia: Female, last ventral segment very much produced, reaching 

 nearly half the length of the pygofer, tapering to a rounded point. 

 Pygofer broad with a black spot near apex and a few short yellow bristles. 

 Ovipositor equalling pygofer, black, with pale tip. 



Male, valve triangular with an acute median tooth. Plates narrow 

 elongate with the tips curving dorsad in two large hooks, which in normal 

 position would be included between the edges of the pygofer. In all 

 specimens in hand, however, the plates are bent backward on venter, 

 exposing their inner face, and one specimen still in the position of com- 

 plete coitus shows the plates caught upon the point of the greatly elong- 

 ated female ventral segment and pushed over against the abdomen. In 

 all specimens in hand it would appear that the position given the plates 

 during copulation had been retained when the specimens were killed. 



Described from five females and four males collected in 

 Washington, D. C, June, 1897, by Mr. J. S. Hine, who states 

 that they were very abundant upon an introduced species of 

 maple. It seems strange that the species should have been 

 so long overlooked if a native form ; and, as suggested by Mr. 

 Hine, it may be an introduced species brought with some 

 of the exotic plants. If so it would still seem to have escaped 

 the vigilance of the descriptive entomologist, as it can not be 

 referred to any described species. 



How a little Tineid Larva lives on what is left of a big 

 Cecropia Caterpillar. 



By Henry Skinner and Alfred F. Satterthwait. 



Mr, H. W. Wenzel, while looking for Pselaphidae and Scyd- 

 menidse, can't go by other natural history objects, as his is a 

 case of atavism. His father and grandfather were naturalists, 

 and he has two sons entltusia.stically following in their father's 

 footsteps. While collecting these minute Coleoptera, he also 

 collected for us a goodly number of cecropia cocoons. These 

 cocoons were sorted over and divided into the heavy ones and 

 light weight ones. The heavy ones contained living cecropia 

 chry.salids and Ophiou viacrurum cocoons, and the light ones 

 larva killed by fungi, (lij)tcrous and hymenoptcrous i)ara.sitcs 

 or by other causes. We were surprised to find in the inner 



