1895.] HEMIPTEEA-HOMOPTEBAOFTHEISLANDOFST.TINCENT. 81 



sometimes marked with a few brown specks. Pronotnm short, 

 longer than the vertex, transversely rugose and impressed, bluntly- 

 rounded in front, the posterior margin short and subtruncate. 

 ScuteDum bluntly triangular, hardly acuminate, with a few im- 

 pressed dots scattered over the surface. Wing-covers almost 

 transparent, a little curved, the veins thick and pale yellow, the 

 general surface a little dusky, with a darker streak behind the pale 

 yellow costa, the veins long and regular. Wings a Uttle smoky, 

 with brown veins. Legs pale dull yellow, with the tarsal joints 

 and nails brown. Sternum and venter dark, often black in the 

 male, with the sutures and margins pale ; genital segments of the 

 female pale yellowish ; tergura mostly black, with a band of 

 yellow next the tip, and the edges of the segments pale ; genital 

 valve triangular, subacute at tip, the two following pieces uniting 

 to form a long, subconical segment with a rounded tip, and armed 

 with stiff, brov\Ti bristles. 



Length to tip of wing-covers 3|-3^ mm. ; width of pronotum 

 1| mm. 



Xumerous specimens of this species were collected on the island 

 by Mr. Smith. Both of the foregoing species belong to a little 

 group of forms w^hich abound on the marshes and low meadows of 

 the Southern United States, and which deviate more or less in 

 venation and form of wing-covers fi'om the types of DeltocejiJialu^. 

 They can hardly be referred to Cicadula. 



Agallia rsTCLATA, sp. nov. 



Form of Agallia quadrijjunctata, Prov. Mostly bro\^"n above, 

 and black beneath. Vertex short and blunt, pale yellowish, with a 

 large black dot each side, a brown interrupted stripe near the eyes, 

 a line A\-ideniug anteriorly on the middle, the anterior margin and 

 a line rnnning inward to the ocellus, also brown ; front suboval, 

 convex, with a divided fulvous margin above, the lateral margins 

 and two short stripes near the clypeus also tawny ; the middle line 

 of cheeks, interruptedly, a triangular border at base of tylus, and 

 the rostrum pale testaceous. Pronotum moderately short, with 

 the sides very oblique and the anterior margin bluntly curved, 

 coarsely punctate ; the colour yellowish with a brown transversely 

 oval line on the middle, this is divided by a dagger-shaped stripe 

 which has an oblique streak each side of it, each side of the oval 

 ring two oblique lines are protracted towards the outer margin, also 

 brown, the posterior margin is often black. Scutellum black, long 

 and acute, pale towards the tip, each basal angle with an ivory- 

 yellow dot. Sternum and pleui'al pieces black, the latter margined 

 with pale fulvous. Legs pale testaceous, striped with dark brown, 

 the tarsi banded with piceous. Wing-covers mostly brownish, 

 testaceous on the outer half of corium and entire membrane, the 

 veins dark brown ; clavus margined on both sides with pale 

 testaceous, which is more or less interrupted by the brown of the 

 areoles ; middle of corium partly crossed by a brown band which 



Pkoc. Zool. Soc— 1895, IS^o. VI. 6 



