194 Journal New York Entomological Society. [Voi. xix. 



which I associate with the type were also found hy Mr. Davis at 

 Cornelia, Ga., at an elevation of about 1.500 ft. All three were 

 taken in July, 1910. 



The greatest difference between this species and ilwracicus is in 

 the posterior tarsi which in the latter have the first joint as long as 

 half the tibia and much longer than all the remaining joints together, 

 while in ihoracicus the first joint is as long as one-third the tibia 

 and equal to all the following joints together. The most obvious 

 differences are in the pale head and partly pale antennae and the much 

 smaller body. 



THE EFFECTS OF PARASITIC CASTRATION IN 

 MEMBRACID^. 



By Ignaz Matausch, 

 roselle, x. j. 



(With Plate \'I.) ^• 



In an article published in the December number, 1909, of this 

 periodical I described as " gynandromorphs " some anomalous forms 

 of a small species of Telamona found on the sweet gum {Liquidam- 

 bar styraciflua). Professor W. M. Wheeler suggested at the time 

 (in littcris) that these anomalies might be due to the presence of 

 parasites and therefore represent conditions similar to those found 

 by Giard in Typhlocyba.^ 



Having had little experience in microscopic dissection, I asked 

 Dr. A. Petrunkevitch to examine some of the specimens. He very 

 courteously complied with my request, and in one of them found 

 19 small larvae. Another specimen which he returned to me with 

 onlv the ventral abdominal wall removed and showing the larv;e in 

 position, is represented in PI. VI, Fig. i. It shows five parasites 

 very clearlv and a sixth partly concealed. One of these was removed 

 and is shown in Fig. 2. The larv^-e lie on the abdomen, with their 

 own abdomens directed towards the dorsal and their thorax and ven- 

 tral surface towards the ventral side of their host. Unfortunately I 



' Sur la castration parasitaire de Typhlocyba par une larve d'Hymenop- 

 tere (Aphelopus malaleucus Dalm.) et par une larve de Diptere (Atelonevra 

 spuria Meig.), C. R. Acad. Sci., CIX, 1889. p. 708. 



