Ill 



being equal to the length of the mesoscutellum. The metascutell is a 



verj (transversely) narrow piece, nearly obsolete. 



The pleurites, or pieces of the flanks, are very narrow and oblique. 

 Above them are inserted (he rudirnentarj wings, which are minute tubercles ; 

 the posterior pair about half as long as the anterior pair. The Hanks of the 

 prothoracic ring, including the coxse and trochantines, are as large as those 

 of the two posterior segments. Tin- flanks of the mesothorax 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 up the episterna and epimera collectively 

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

 (coxae and trochantines collectively). The coxse are moderately wide, while 

 the trochantines are very narrow, being almost linear. 



The thorax of Hybernia differs in the mesoscutum being slightly longer, 

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

 lozenge-shaped. The metascutum is much smaller than in Anisopteryx, the 

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

 short, transversely linear, and very wide. 



In Phigaiia nevadata Gr. & 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 differ in size in different individuals. The patagia are 

 nearly as large as -usual. The specimen from which the following descrip- 

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



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

 the eyes than in the male; but the difference between the two sexes is, in this 

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

 nium are much as in Hybernia. The elypeus is nearly square, being as long 

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

 palpi are better developed than in the other genera mentioned; and the max- 

 illa- are very short, as in the other genera, scarcely reaching beyond the tips 

 of t he palpi. 



The thorax is much larger than in the two other genera mentioned. The 

 two halves of the prothoracic scutum are rather smaller than in the male, but 

 well developed. The mesoscutum is much longer than in the two other 

 genera, being fully half as long as wide, and rather deeply excavated posteri- 

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



