94 [September, 



In a specimen of Nezara viridula, L., var. torquaia, ¥., from Madeira, given to 

 me by Mr. Wollaston, the left antenna is reduced to two joints : the first is nearly 

 normal, but instead of the remaining four, it has, anchylosed to it, a subfusiform 

 pubescent joint about as long, but twice as thick, as itself. In a species of Ni/sius 

 from St. Helena (H. SanctcB-Helence, not yet described), the right antenna has the 

 first two joints about the usual length, but rather thicker ; the remaining two are 

 represented, however, by a single joint, rather shorter than the normal ultimate one ; 

 its basal half is not thicker or darker than the second joint, but the other and larger 

 half is clavate and black, like the normal fourth joint. In anotlier Nysius from 

 St. Helena, which I cannot separate from N. thymi, the second joint of the left 

 antenna is about one-third longer than usual ; the normal third is absent, and the 

 actual third resembles the normal fourth in length, but instead of being equally 

 thick throughout, is narrow for about the basal one-fourth, and then suddenly in- 

 crassated. In this last case, it would seem as if the third joint had been divided 

 between the second and fourth, the second taking the larger share. — F. Buchanan 

 Whith, Perth : August, 1877. 



Description of Psylla visci, Curtis. — Psylla visci, Curt., B. E., xii, 565, 5a ; 



Forst., Verb. Ver. Eheinl., v, 71, 4? ; Scott, Tr. Ent. Soc, 550, 20 (1876).— Green, 



yellowish or brownish-yellow. 3Iesonotum, down the central portion, with brown 



streaks, varying in intensity according to the colour of the insect. Face — lobes 



slightly longer than the crown down the centre, apex narrow but rounded, divergence 



not equal to the base of either. Elytra transparent, with a more or less distinct 



longitudinal brownish tinge between the nerves, but not extending to them ; length 



equal to about 2j times the breadth ; costal stigma wide at base. 



Head — crown pale yellow or brownish -yellow ; posterior margin concave ; fovesB 



deep ; breadth between the eyes more than twice the length down the centre. 



Face — lobes' green or pale yellow or brownish-yellow, slightly longer than the 



crown down the centre, sparingly clothed with pale hairs ; base broad, apex 



narrow, but rounded, outer margin perceptibly concave, inner margin almost 



straight, divergence not so great as the base of either. Antennm pale yellow, 



joints 3 — 8 brown at the apex, 9, 10 black, 4th about three-fourths the length 



of the 3rd. 



Thorax — pronotum generally yellowish or bone-white with two minute brown 

 punctures adjoining the lateral margins. Mesonotum : anterior portion yellow- 

 ish, in front reddish, or brown with a moi-e or less defined pale space in front ; 

 central portion with broad, longitudinal, brown, sometimes reddish-brown, 

 streaks ; or entirely dark brown with four narrow, yellowish streaks placed one 

 on each side of the centre, and another more remote ; posterior portion yellowish 

 or sometimes faintly brownish in the centre. Elytra transparent ; length equal 

 to about 2^ times the breadth, with a more or less distinct, longitudinal, brownish 

 tinge between the nerves, but not extending to them ; nerves fine, brown ; 

 costal margin finely ciliate, costal stigma wide at the base, narrowing gradually 

 to the apex ; dorsal margin, next the apex of the clavus, with a short black 

 streak, within which, on the disc, is a small dark bi'own or fuscous spot ; radius, 

 as far as in a line with the apex of the stigma, parallel with the costal margin, 

 from thence to the apex slightly rccui'ved, ftpper arm of tlie cubitus somewhat 



