240 ENTOMOLOGICAL SOCIETY 



(J l . Genital plate longer than the genital segment, simple, gradually 

 narrowing apicallv, front margin convex, posterior margin concave, tip 

 subtruncate and pointing posteriorly; forceps distinctly lower and much 

 narrower than the plate, straight, hardly narrowing apicallv, tip subacute, 

 black. 



9- Genital segment about as long as the three preceding ventral seg 

 ments together, upper plate higher than the lower plate, gradually nar 

 rowing posteriorly and produced in a long, straight and acute point? lower 

 plate distinctly shorter than the upper plate, gradually narrowing poster 

 iorly and acute at the tip which points upwards. 



Originally found by myself on the Island of Key West, Fla., 

 in April, 1887, but subsequently (in 1903) bred in great numbers 

 from larval cases found at the same place and at Cayamas, Cuba, 

 on the leaves and young shoots of Piscidia erytJirina. 



Type. No. 8146, U. S. National Museum. 



3. THE SUMAC PSYLLID.E OF THE UNITED STATES. 

 (GENUS Calophya Fr. Lrew, subfamily Psyllinae.) 



This genus, fotuided upon a single Kuropean species, is easily 

 recognizable by the peculiar formation of the head ; the vertex is, 

 at its anteriorly half, longitudinally convex, and therefore ante 

 riorly inverted : the frontal cones or lobes which are of varying 1 



J j O 



length but always shorter than the vertex, thus appear to be in 

 serted on the underside of the head and they form a distinct angle 

 with the vertex. Anterior ocellus not or barely visible from 

 above. Antennae short and stout, at most as long as the width 

 of the head. Wings of varying shape, either smooth or indis 

 tinctly sculptured, transparent or opaque; cubitus very short, 

 pterostigma present, long but narrow, first marginal cell decid 

 edly larger than the second ; genital plate of male more or less 

 oval in outline. 



The species are of small, rather stout form and live, so far as 

 known, exclusively on various species of Rhus (sumac). Out- 

 eastern species hibernate as full-grown larvae or pupae on the 

 stems of their food-plants, and there is but one generation each 

 year.* 



*The development of the two species occurring near Washington. 

 D. C., was carefully studied by Mr. Theo. Pergande many years ago, and 

 some fine drawings illustrating the various stages were made by Dr. Marx. 

 For some reason unknown to me the box containing most of the type 

 specimens of our species of Calopsylla, as well as the drawings and the 

 manuscript referring to the descriptions of the earlier stages, could not 

 be found after the death of Dr. C. V. Riley. Such of the figures as are 

 still in my care are herewith published without further comment. 



