208 Mr. M, Burr's Observations on 



iitrinq\ie atqne apice in dentem jjioductum, deiite apicali obtiisangulo, 

 lateribusque acntis ; $ baud perspicuum. Forcipis braccbia ^ 

 basi remota, valida, recta, margine interne medio dente forti armata, 

 elongata, apicem versus acuminata, leviter incur\-a ; 5 ^^-^i sub- 

 contigua, validiora, inerniia, recta, conica. ^ 9 • 



s ? 



Long, corporis . . . 7-7'5 mm. 6'25 mm. 



„ forcipis . . . 1-75-2 „ 1-25 „ 



Hal. Diego Suarez {Alluaml, 4-90, Mus. Paris). 



Tliis species is allied to L. ridcns and L. fygidiafa, but 

 (lifters in the distribution of colours, absence of wings, by 

 the shape of the pygidium, whicii has the form of a trans- 

 verse plate, produced posteriorly into a blunt point, while 

 the lateral edges are angular, so that the organ assumes 

 the shape of tlie 3-pointed lobe, whereas L. ijygidiata has 

 4 points. In the larva the pygidium is straight, conical 

 and pointed. 



Labia insularis, sp, n. 



L. amcenee vicina. Colore fusco, pallido-variegato. Caput nigrum ; 

 antenntB 13-segmentatfe, segnientis 1-5, 10, 11 pallida?, 6-9, 12, 

 13 nigra?. Pronotum nigrum, lateribus anguste fnlvo-marginatis. 

 Elytra magna, nigra, vitta magna lata flava media ornata. AIbr 

 (sfepe abbreviata?) fiava?, macula fusca ornat*. Femora fusca, genubus 

 pallidis ; tibise pallida?, medio fusco-annulatie ; tarsi toti pallidi. 

 Abdomen nigrum, vel rufo-nigrum, plicis lateralibus distinctis ; seg- 

 nientum dorsale angustuni, supra insertionem forcipis utrinque 

 tuberculatum. Pygidium tegre distinguendum, ^ breve, conicum. 

 Forcipis braccbia : ^ basi remota, rufa vel liava, margine interno 

 prope basin dente parvo acuto armata, subrecta, sensim incurva, 

 ajiice attingentia ; $ sa?pe colore fusciori, rufo, subcontigua, breviora, 

 valida, conica, apice decussata. (^ 9 • 



6 ? 



Long, corporis . . . 5-7'25 mm. 6'75-7 mm. 



„ forcipis . . . 1-1-2 „ 1-1-25 „ 



Ifab. Madagascar, ' Region du sud-est, pays Androy, 

 Imanombo," ix, 1901 (Oh. Alhuiud, Mus. Paris); DiEGO 

 Suarez {Gh. Alhiaud, iv-96, Mus. Paris). 



Allied to L. avicena, Stal, but differs in colour, and the 

 shape of the pygidium and forceps; very variable in colour, 

 but the females appears to be, as a rule, darker than the 

 males. Of the two forms, the males are most numerous 

 of the wingless, and the females of the winged forms. The 



