March, '03] ENTOMOLOGICAL NEWS. 85 



elongate, widest at second segment and strongly narrowed posteriorly 

 almost pointed ; densely punctured like thorax, the punctures larger 

 apically. Each segment having a very narrow posterior, smooth, de- 

 pressed ferruginous border ; which is partly concealed by the hair bands 

 which extend over it. Apical segment with oblique sides and subtrun- 

 cate apex. Ventral surface of abdomen coarsely punctured at base, 

 finely at apex. Last ventral broadly rounded and emarginate. Legs 

 black, coarsely punctured, tarsi piceous. Middle tibiae with one spur and 

 bispinose outwardly at tip. \Yings nearly hyaline, nervures black. Mar- 

 ginal cell as long as first discoidal, rounded at tip, where it is not con- 

 tiguous with costal margin ; bearing a very weak appendage at tip. Sec- 

 ond submarginal cell one-half longer than first, narrowed nearly one-half 

 toward marginal, and receiving the recurrent nervures at its basal fourth 

 and apical fifth. Posterior wings hyaline, nervures piceous. 



Described from a female specimen collected at Austin, Tex., 

 May 1 8, 1900. It greatly resembles in form and character of 

 markings certain species of wasps of the genus Nysson. 



Morpho Thoosa (sp. nov.). 



Description of a new variety of Morpho polyphemus Dby. Hew. from 



Mexico, 



BY ELLISON A. SMYTH, JR. 



Va. Polytechnic Institute: Blacksburg, Va. 



Extent five and three-sixteenth inches : general color and 

 markings as in M. polyphemus, of w 7 hich it is possibly a coast 

 variety. 



Upper surface : Satiny white, with a pearly lustre noticeably greener 

 than in polyphemus and the forewings fuller in outline ; apex, to depth 

 of half an inch blackish-brown ; this color extends one and one-eighth 

 inches along costal margin, and one and three eighth inches along exter- 

 nal margin where it ends in two spots ; costal margin from base of wing 

 to end of cell, brown ; extremity of cell crossed by the usual black bar 

 following and covering the disco-cellular nervules, wider and darker than 

 the maximum in polyphemus. Hind wings with extremities of nervules 

 lined in black, forming a series of marginal dashes ; a submarginal row 

 of larger, rounded spots (not lunulate as in polyphemus) in the inter- 

 nervular spaces, about three-eighths of an inch from margin. Anal angle 

 lacks the buff spot constant vn polyphemus. 



Under surface: The dark apical border of forewings shows faintly 

 through, being distinct only at marginal endings of subcostal and dis- 

 coidal nervules ; a faint brown bar crosses end of cell, lighter in its 

 centre, and a brown curved bar through middle of cell, from subcostal 

 to median nerves (this is sometimes absent in polypheninf, though dis- 



