396 E. BERGROTH 



oculos macula basali flavida notato, bucculis albidis, fere percurrentibus, sed 

 retrorsum sensim humilioribus; antennae dimidio corpori (incl. elytris) subaeque 

 longae, subglabrae, obscure testaceae, articulo primo plus minusve fusco-notato, 

 apice secundi et tertii plerumque fusco, quarto toto fusco-nigro, secundo tertio 

 tertia parte vel interdum fere dimidio longiore, quarto secundo paullo breviore 

 vel subaequilongo et quam tertio semper longiore; rostrum fuscum, articulo 

 primo bucculis subaeque longo. Pronotum longitudine sua minus quam duplo 

 latius, testaceum, sat fortiter modice dense fusco-punctatum, fascia subapicali 

 et maculis quattuor transversis basalibus (interdum subconfluentibus) nigris, 

 marginibus lateralibus subrectis, raro post medium paullo sinuatis. Scutellum 

 testaceum, fusco-punctatum, carina media longitudinali nigra, apice pallida. 

 Pectus fuscum vel nigricans, fascia apicali utrinque abbreviata prosterni, mar- 

 gine postico pleurarum, acetabulis orificiisque albidis vel testaceis. Elytra 

 apicem abdominis aliquantum superantia, albida, pellucida, dense fusco-irrorata, 

 sed limbo costali retrorsum dilatato corii et limbo exteriore membranae imma- 

 culatis, margine apicali corii piceo-nigro, plerumque bis pallidointerrupto, mar- 

 gine costali ad basin per spatium breve recto et albo-ciliato, deinde leviter 

 rotundato-ampliato. Abdomen subtus in mare nigrum, macula transversa api- 

 cali segmenti sexti et interdum etiam margine apicali medio segmentorum 

 duorum praecedentium margineque laterali ventris flavidis, segmento genitali 

 toto nigro, medio impresso; ventre feminae flavotestaceo, basi et vitta lata 

 sublaterali nigris. Pedes testacei, femoribus seriatim nigro-maculatis aut ple- 

 rumque, apice flavido excepto, omnino piceo-nigris, tibiis apice (posticis etiam 

 basi), apice articuli tarsorum primi ac tertio, basi exepta, fuscis. Long. (incl. 

 tegm.) 3 — 4 mm. 



Belongs to StAl's group hh and Horvath's group 10 (13). 



Masatierra and Masafuera. Numerous specimens from both islands. 



2. Gen. et sp.? 



Masatierra. 



A single larva belonging to StAl's group Rhyparochromaria. It is pale 

 testaceous suffused with brownish in many places, abdominal tergum with three 

 transverse black spots enclosing the secretory openings, pleurae dark brown, 

 a spot at basal angles of propleurae and a percurrent vitta near lateral margins 

 of metapleurae whitish, antennae, rostrum, and legs pale testaceous, apical 

 half of third and the whole fourth antennal joint, a broad basal and narrow 

 subapical ring to femora, and a broad tibial ring (nearer to apex than tho base) 

 fuscous. Head a little broader than long, antennae longer than half the body, 

 pilose (especially the 2d joint), first joint passing apex of head by about half 

 its length, second more than half as long again as second, third as long as 

 first, fourth almost as long as second, rostrum extended to base of venter, 

 first joint reaching base of head, longer than first antennal joint. Pronotum 

 twice as broad as long, a little narrower at apex than at base, lateral margins 

 straight, shortly rounded at apex, basal margin straight in front of the scutel- 

 lum, which is about half the length of the elytral pads and separated from 

 them by a fine suture. Front femora moderately incrassated with a spine 

 beneath near the apex. Length 4 mm. 



