genera and species of the group of PsjjUidce. 



463 



nonnibil vesicati. Antennae longse, filiformes ; articuli 

 primus et secundus crassi ; tertius longissimus ; quartus 

 ad octavum usque longitudine fere sequales ; nonus pree- 

 cedente brevior ; decimus subfusiformis. Oculis desuper 

 visi semiglobosi, laterales. Tborax : pronotum angustum, 

 ad margines laterales latissimum, prope quos fovea 

 parva sive punctura cernenda ; mesonofcum modice con- 

 ■vexum ; dorsulum irregulare, bexagonum. Elytra elon- 

 gata, apice rotundata ; stigma elongatum ; radius nervo 

 marginali ante apicem incurrens ; cubiti furcee elongatse. 



Head : crown down tbe centre more tban balf tbe 

 breadtb between tbe eyes ; lateral margin in front of 

 eacb eye produced into a sbort angular tootli ; anterior 

 margin more or less concave. Face lobes long, stout, 

 somewbat vesicate. Antennae long, filiform ; 1st and 

 2nd joints stout ; 3rd long=est ; 4 — 8 almost of equal 

 length ; 9tb shorter tban tbe former ; lOtb slightly fusi- 

 form. Eyes, viewed from above, hemispherical, placed 

 on tbe sides of tbe head. Thorax: pronotum narrow, 

 widest at tbe lateral margins, within which is a small 

 fovea or puncture ; mesonotum moderately convex ; dor- 

 sulum of an irregular hexagonal shape. Elytra elongate, 

 rounded at the apex ; stigma elongate ; radius joining 

 the marginal nerve before the apex ; cubitus furcations 

 elongate. 



Crciis longipennis. (PI. XIX., figs. 3 — 3c')« 

 Livia lonqipennis, Walker, List Hom., B. M., part 4, 



p. 9io, $ . 

 Psylla livioides, Walker, Ins. Saund. Horn., p. Ill, $ . 

 Rufus. Caput deflexum, angulum cum corpore sat 

 magnum fingens. Vertex rufus ; longitudo media 

 dimidio inter oculos spatio longior, Canalicula diagonal! 

 utrumque in medium ducta ; margo lateralis ante oculum 

 utrinque in dentem brevem, augularem, productus; margo 

 posterior concavus, externe rotundatus ; margo anterior 

 angulatus. Lobifacialesrufi, elongati, crassi, nonnibil vesi- 

 ciformes, marginibus internus ante apicem baud divari- 

 cantibus, pilis longiusculis tenuibus, sericis, albis, dense 

 obsiti. Antennae rufse, filiformes, pilis tenuibus, suberectis, 

 parcius vestitse; articuli primus et secundus breves, crassi; 

 primus secundo duplo crassior et fere sesqui longior ; 

 tertius longissimus, tertia parte longior quam quartus ; 

 articuli quartus etc. ad octavum longitudine paene 



