78 J-ouRNAL New York Entomological Society, [^oi. xxviii. 



Explanation of Plate IV. 

 Genitalia of Conotilachelus brevisetis Champion. 



Fig. I. The female parts: a, space where the area is somewhat contracted, 

 corresponding with the space b in fig. 5 ; an, anal orifice ; ovd, the common 

 oviduct; spt, spermatheca with its gland; ut, bursa. 

 • Figs. 2, 3, 4, 5 and 6. The male parts. 



Fig. 2. Profile of the adsegus with the sac indrawn, but with tegmen 

 extended. 



Fig. 3. Tegmen dissected off the median lobe. 



Fig. 4. Apical portion of the median lobe, showing median orifice for the 

 protrusion of the sac and transfer apparatus. 



Fig. 5. Apical portion of median lobe, profile with sac extended. 



Fig. 6. Face of transfer apparatus. 



In figures 2 to 6 the lettering is uniform, as follows : b, contracted part of 

 the sac ; c, hinge or volet ; cm, connecting membrane ; d, membranous bulge 

 accommodating the transfer apparatus when the sac is retracted ; e, outer shield 

 of transfer apparatus; ej, ejaculatory duct; fo, functional orifice; is, the sac; 

 ml, median lobe; mo, median orifice; nis, strut of median lobe; ia, transfer 

 apparatus ; tg, tegmen ; tgl, tegminal lobe. 



THE TRUE KATYDID NEARLY EXTINCT IN NEW 



YORK CITY. 



By Wm. T. Davis, 

 New Brighton, Staten Island, N. Y. 



The true katydid, Pferophylla camellifolia Fabr., is either extinct 

 or nearly so on Staten Island, a borough of New York City. It used 

 to be very common there, and as late as August 14, 1908, the writer 

 noted it " quite numerous and very noisy in the tall trees in the 

 Egbertville ravine" near the central part of the Island. There are 

 still considerable forested areas on Staten Island that would seem 

 to be as suitable for the insect as similar places on Long Island and 

 in New Jersey, and indeed it used to frequent these very same trees. 

 Why it has died out is not known, except ppssibly the air is no 

 longer as pure as formerly, for there are now numerous factories 

 along Arthur Kill, the smoke from which may have affected the 

 foliage on which it feeds. However, it is no longer present even on 

 the ocean side of the Island. In our investigation that carried us 



