86 



attingente. Pronotum longitudine circiter dimidio latius, margini- 

 bus lateralibus anticis subrectis, angulis lateralibus obtusis, nonni- 

 hil eminulis, carina longitudinali média parum perspicua. Femora 

 antica inermia, média subtus apicem versus spinulis perpaucis 

 armata, postica leviter (Ç) vel fortius (rf) incrassata, basin versus 

 leniter curvata, tota sat dense minute granulata, subtus biseriatim 

 spinosa, spinis flavidis apice nigris, spinis mediis seriei interna? in 

 mare majoribus, verruciformibus vel fere mammiformibus, apice 

 nigro-apiculatis, tibiis posticis femoribus et trochanleribus unitis 

 suba?quilongis ($) vel paullo longioribus (çf), rectis (Ç) vel levis- 

 sime incurvis (çf), compressis, subtus in dimidio basali leviter dila- 

 tatis, per totam longitudinem denticulatis, dentibus nonnullis 

 majoribus intermixtis. Segmentum génitale maris utrinque impres- 

 sum, medio apicem versus compressum, margine apicali rotundato. 

 Long. : cf 14-15 mill., $ 16 mill. 



Argentina (Ghaco de Santiago del Esters, Rio Salado). 



Differs from A. hœmaticus Stàl, to which it is allied, by smaller 

 size, shorter hind tibia?, and the brown-banded pleuree, from this 

 and ail other species by the shorter rostrum. 



DERSAGRENA SURFOVEOLATA Rerg. 



This fine insect I possess from the same locality as the preceding 

 species. Berg placed it in Athaumastus, but it appertains to the 

 genus Dersagrena Kirk. (Dalcera Sign.). In Dersagrena the body is 

 sericeously pubescent, the third antennal joint is about twice as 

 long as the second, and the latéral margins of the prothorax are 

 obtuse, only very feebly carinate. In Athaumastus Mayr the body 

 is glabrous, the third antennal joint is but little longer than the 

 second, and the pronotal latéral margins are narrowly expanded 

 and distinctly reflected. Dalcera flaviventris Berg is certainly not a 

 Delcera. 



DASYNUS OCCIPITALIS n. sp. 



Pallide fulvo-testaceus, pleuris maxima parte et vitta lata subla- 

 terali ventris livido-testaceis, macula transversa basali verticis 

 ocellos attingente et extus paullum superante, fascia pone apicem 

 pronoti latera non attingente, fascia obliqua pleurarum (in meta- 

 pleura abbreviata), antennis, tibiis tarsisque nigris, macula magna 

 transversa basali pronoti, hemelytris (margine costali et apicali 

 corii basique clavi exceptis), fascia angusta basali segmentorum 

 ventralium plus minusve distincta medio late interrupta et latera 

 non attingente apiceque femorum superne fuscis, pronoto, corio 

 clavoque sat dense concoloriter punctatis, scutello, subtilius fusco- 



