( I'-t ) 



Ilab. Cochabamba, Bolivia (St. Germain leg!) : 1 ? . 



Agrees wnth G. clat/iratus &ud robustus in the short and robust body, but differs 

 from all tlie allied species of Gymnognatkxs in the very short rostrum, the convex 

 front of the head, which is devoid of keels, the non-dentate end of the abdomen, 

 and in the pattern of the npperside. The colour of the head is in germaini nearly 

 as in clatkratus, bohlsi, and ornatus; these three species have, however, a longer 

 and obviously carinate rostrum, and a bidentate pygidinm and bidentate ventral 

 anal segment. 



3, Gymnognathus daguanus sp. nov. 



Caput rubrnm,utrinqne snpra et infra ocnlnm albo-vittatnm, fronte irregulariter 

 mnlticarinata. Rostrum apicem versus dilatatuni, latitudine dimidio vix longius, 

 punctato-rugosum, carina mediana laevi in impressione sita ; hac imj)rcssionc in 

 basi sat jirofunda utrinc[U(' carina determinata ; lateribus cannula instructis, pone 

 acetabulum antennarum dilatatis, ante dilatatiouem setis densis vestitam sinnatis. 



Antennae S prothoracis basin attingentes, articulis 1° — 7° tenuibus, ajncibus 

 pamm incrassatis, 1° et 2° subaequalibus, 3° longo septimo i)lus dimidio longiore, 

 8° dilatato complanato septimo breviore ; clava lata infra hirsuta ut in ilor.^onotato 

 fere structa ; ? prothoracis medium superantes, articulis z" tertio dimidio vix 

 breviore, T et 8° brevibus, hoc latitudine panlo longiore, clava hand hirsuta. 



Prothorax latitudine parnm longior, subtilissime transverse rugulosus ; carina 

 dorso iusensim flexuosa lateraliter medium hand attiugente, aiigulo ejus obliquo 

 vix rotundato ; vitta tenni mediana j)oue cariuam gnttiformi, duabus lineolis obli(]uis 

 brevibus .antebasalibus ad carinam cum vitta mediana connexis ; vitta laterali ad 

 angulum basalem prothoracis ubi latiore incipiente, oblicpie versus medium disci 

 ducta, subarcuata, ad carinam lateralem tenuiter dilatata, griseo-albis signatus. 



Elytra dorso sat late depressa, interspatio quinto postice subcariuiformi, plaga 

 communi triangulari basali scntellum hand taugente e lineolis composita, in iiiter- 

 .spatio tertio et in sutura interrupta, in interspatio quinto subinterrupta ; liueola 

 posthumerali in stria septima, linea longa snbmediana in quinta, anguloqno communi 

 postnK'diana in sutura interrupta apice versus basin directo, griseo-albis, plaga basali 

 parum liitosa. 



Pygidinm apice truncatum, basi ntrinqite macula minutissima (saepe absente) 

 alba notatum. 



Prosternnm vitta laterali obliqua griseo-alba ; mesosternum macula laterali 

 griseo-alba ; metasternum duabus maculis (basali et apicali) sat magnis flavidis. 

 Abdomen utrinque serie macnlarum lateralium, altera serie versus medium sita 

 macularum obsoletiarnm grisc^o-albarum signatum. Segmentum anale fortiter 

 bispinosnm. Pedes nigri, sparsim griseo-pubescentes. 



Long, rostr. 2 ; proth. 3 ; elytr. Si : lat. 3 mm. 



Holj.\{. Dagua, Columbia (W. Kosenberg leg.) ; 2 (?(?, 2? ?. Type S. 



This form must probably be separated generically from the other species 

 standing under Gymnognatkus on account of the jieculiar structure of its rostrum. 

 The latter is laterally behind the antennae deeply sinuate, and the portion behind 

 this sinus is clothed with stiff short hairs which i)rojoct into the sinus. The antennai- 

 vary in length in the two males before me. The lateral oblique band of the 

 pronotnm is anteriorly somewhat dilated and rounded. 



