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beiin^ equal to tlie l(Migtli of Il)e mesosciitelluin. The metascutelluni is a 

 very (transversely) narrow piece, nearly obsolete. 



The i)lenrites, or pieces of the flanks, are very narrow and oblique. 

 Above them an; inserted the rndinientary wings, which are minute tubercles; 

 the posterior p;iir al)ont half as long as the anterior pair. The flanks of the 

 protlioracic ring, including the co.xte and trochantines, are as large as those 

 of the two posterior segments. The Hanks of the niesothorax are so much like 

 those of the metathorax that a description of one will answer for both. The 

 episterna are long and moderately wide, while the epimera are very narrow, 

 almost linear. The pieces making u[) the episterna and epimera collectively 

 are of the same width, and nearly as long as the basal segments of the legs 

 (coXtB and trochantines collectively). Tlie coxte are moderately wide, while 

 the trochantines are very narrow, being almost linear. 



The thorax of Hi/hen/ia dliYevii in the mesoscutuin being slightly longer, 

 the hinder edge not being excavated, while the scutellum is not distinctly 

 lozenge-shaped. The metascutum is much smaller than in Anisoj^teryx, the 

 two halves being much more widely separated, while the scutellum is very 

 short, transversely linear, and very wide. 



In PhigaUd vevadnta G. & R., the wings of the female are much larger, 

 the pads being either nearly as long as the thorax or longer and wider in 

 proportion. They ditfer in size in diiierent individuals. The patagia are 

 nearly as large as usual. The s])ecimen frt)m which the following descrip- 

 tion is made is one in which the wings are not (piite as long as the thorax. 



The head of the female is a little smallei', and much narrower between 

 the eyes than in the male: but tiie diiierence between the two sexes is, in this 

 respect, not so great as in the two other genera. The occiput and epicra- 

 nium are much as in Hybenna. The clypens is nearly square, being as long 

 as wide, not narrowing much in front, and very full on the surface. The 

 pal})i are better developed than in the other genera mentioned ; and (he max- 

 illa^ are very shoii, as in the oilier genera, scarcely reaching beyond the tips 

 of the palpi. 



The Ihonix is mucli lni-gcr1han in the two other genera mentioned. The 

 two halves of the prothoracic scudnn ;ire rather snuiUer than in the male, but 

 well developeil. The meso.sculum is much longer than in the two other 

 genera, being fully half us long as wide, and rather deeply excavated ])osteri- 

 orly to receive the scutellum, which is about one-third as long as wide, being 



