465 



DESCRIPTION or A NEW TORTRICID FROM CALIFORNIA. 



By L<)Ki> Walsingham. 

 SEMASIA Stub. 



Semasia bucephaloides. sp. n. 



Antennw, grayish. 



Palpi, stout, i)rojectinfj more than the leugth of the head beyond it ; grayish-white, 

 sprinkhid, especially at the sides, with gray scales. 



Head, grayish-white, sprinkled, especially at the sides, with gray scales. 



Thorax, grayish-white above, brownish-ochreons at the sides. 



Fore-wings, grayish-white, much suffused and sprinkled with gray scales ; a brownish- 

 ochreous, elongate, ill-defined patch, extending from the basal fourth to beyond 

 the middle of the wing, parallel to the costa, along the upper edge of the coll ; at 

 one-third from the base, scarcely attaining the dorsal margin, but crossing the 

 fold, is a patch of scattered, dark umber scales on a brownish-ochreous ground; 

 a similar iiatch, but less conspicuous, is situated immediately above the anal 

 angle, bordering the edge of the ocelloid patch ; this is whitish-ochroous, shaded 

 around its edges with brownish-ochreous scales, and containing two short longi- 

 tudinal streaks of dark umber scales on its upper half; above the ocelloid patch 

 the apical portion of the wing is also whitish-ochreons, suffused with brownish- 

 ochreous ; the only other marking noticeable, with the exception of some gray 

 raottlings on the costa, is a small whitish patch about the end of the cell, fol- 

 lowed by some pale brownish-ochreous scales; cilia, white along their middle, 

 irregularly bordered and interrupted with gray and brownish-gray. 



Hind-wings, very pale brownish ochreous; cilia, white, with a reduplicated grayish 

 line along the base and another at their ends. 



Abdomen, dull grayish. 



ie^s, anterior pair whitish, speckled with gray on their inner side; tarsi and tibi;e 

 annulated with gray ; posterior pair with the tibia* aud tarsi speckled with i)aie 

 gray on the outer side. 



Exj} : al: 30mm. 



Hab: Little Shasta, Siskiyou County, Cal., September, 1871. 



Typt 9 ^U8. Whm. 



EXTRACTS FROM CORRESPONDENCE. 



Experiments with Bacterial Cultures against Insects. 



I send you to-day specimens of diseased larv;e of I'lnsia. For several weeks I have 

 been investigating the bacterial trouble and find it easily communicable by spraying, 

 and that healthy worms fed on leaves sprayed with exceedingly dilute culture rap- 

 idly die. 



It occurs to me that there is a chance to save our second-crop (February, March, 

 April) cabbage by spraying the first brood of Avorms (December, January) with cul- 

 ture solution of this bacterium. The culture could be sent to large growers in De- 

 cember, with directions, using a Vermorel nozzle and Knapsack pump. Perhaps by 

 colonizing worms planting of May 10 and spraying them these spots would prove 

 centers of infection. 



I am now trying the spray upon the " Horn worm of Tobacco" .and the "Dia- 

 mond back " worm, and as soon as I can do so shall try tlie Cotton Caterpillar. I do 

 hope that this will prove a discovery of practical value, for the cabbage crop here is 

 very large.— [J. C. Neal, Florida Experjraewtal Station, Lake City, Florida, May 21, 

 189L 



