108 Analytical Notices of Books. 
immediate relation to Myrina will be readily conceived from the agree- 
ment of their principal characters, the distinctions between them being 
chiefly derived from differences in the proportional length of parts. In 
external habit it resembles Colias, a group referred to the Chilognathiform 
stirps ; the colour is spread over the surface in the same manner, and 
varies but little in the sexes; the margins are similar, and the metallic 
irrorations existingin Myrina are no longer observable ; the markings 
underneath likewise are simple. The form of the hinder wings and the 
direction of the tail indicate also an affinity to Gonepteryz ; but this re- 
semblance, being founded entirely on an artificial character, is not in- 
sisted on. The insectsin the East India Company’s collection referred 
to this genus are the Lorura Atymnus, (Papilio P. R. Atymnus, Fab.,) 
and a new species, Lorura Pita. 
Another new genus, PHZDRA, is proposed by Dr. Horsfield as a kind 
of appendix to the Vermiform stzrps, in which its true position is not at 
present satisfactorily ascertained. Its metamorphosis is yet unknown ; 
and the perfect insects referred to it possess a complication of characters, 
partaking of several genera, besides certain peculiarities of their own. 
In the structure of their antenne they agree, upon the whole, with Loz- 
ura; and the palpi, although shorter than in that genus, are constructed 
on the same plan : in the anterior feet of the male they resemble the in- 
dividuals of Thecla, strictly so called; but they differ from all the spe- 
cies of that genus and of Lyczna in the pulverulent covering of the under 
side of their wings, in their markings, and in the abrupt termination of 
the hinder pair. The first species enumerated, the Phedra Terricola, 
Horsf., (Hesperia R. Phedrus, 3, and Hesp. R. A’sopus, 2, Fab.,) 
was arranged by MM. Latreille and Godart in their fourth great subdivi- 
sion of the genus Polyommatus, comprising those with entire or slightly 
dentate wings; but although several of the insects of that section resem- 
ble it in the colour of the upper surface, they have nothing of the pecu- 
liarity which distinguishes the under side, and are all essentially different 
in ageneric point of view. A second species is the Phedra insularis, 
Horsf., which differs from the preceding, not merely in marking, but 
also in the form of its hinder wings, indicating a sectional division in this 
small group. In Ph. Terricola these organs are broad and obtuse, with 
an abrupt regularly transverse posterior margin, gradually rounded to- 
