474 
Mr. W. Warren on new 
LVIII. — Descriptions of some new Genera of Pyralidse. 
By W. Warren, M.A., F.E.S. 
In the course of rearrangement of the collection of Pyralidae 
in the British Museum the formation of many new genera 
was found to be a matter of necessity. Three only of these, 
Thliptoceras, Eurycraspeda , and Callinaias ) have as yet been 
published, and will be found in Col. Swinhoe’s paper in the 
Trans. Ent. Soc. for 1890. In view of the approaching publi- 
cation of a new volume of the ‘ Illustrations of Typical 
Specimens of Lepidoptera Heterocera in the Collection of the 
British Museum,’ it has now become necessary to expedite 
the appearance of the descriptions of a few more of these new 
genera, to which reference will have to be made in the forth- 
coming work, and these (nineteen in number) are herewith 
characterized. Diagnoses of the remainder will be published 
at the earliest opportunity. 
Parasarama. 
In point of structure, markings, and general appearance 
identical with Sarama , Moore; distinguished at once by the 
absence of the antennal processes which occur in the males 
of that genus. 
Type P . cuproviridalis $ , Moore ( Locastra , M.), = Locas- 
tra margarita $ , Butler. 
Opsibotys. 
In place of the old generic term Botys — the original type of 
which is the Geometer now known as Lythria purpuraria — 
it is proposed to substitute the term Opsibotys (i. e. Botys in 
appearance) for all those species of Lederer’s first division, 
viz. those with porrect, rostriform, labial palpi, which are left 
when all other separable genera have been removed. 
Type O.fuscalis , Schiff. ( Pyralis ). 
Rhectothyris. 
Superficially very much like LedereFs genus Trithyris ; 
distinguished by entirely different labial palpi. In Rhecto- 
thyris these are shortly rostriform, porrect, while in Trithyris , 
Led., they are upeurved close in front of the face. Fore 
wings very elongate, being four times as long as broad, with 
the hind margin very oblique and slightly bulging in the 
middle ; wings crossed by two broken hyaline fasciae. 
Type R. gratiosalisj Wlk. ( Samea ?). 
