Vol. XXVJ ENTOMOLOGICAL NEWS. 259 



Brachystethus vicinus Sign. Of this species, not recorded here- 

 tofore from British Guiana, there are one from Bartica and three 

 from Mallali in the lot. 



Edessa vitulus Fabr. One example from Mallali. 



Edessa sp. One example of a large form from Mallali. 



Edessa rufomarginata De G. Mallali, two specimens. 



Edessa parvula Dallas. Three specimens from Bartica of a 

 species which agrees exactly with specimens so identified by Van 

 Duzee. Not heretofore known from the Guianas. 



Cataulax subvittatus Walker. This species heretofore apparently 

 known only from Northern Brazil is now recorded from Bartica, 

 whence one example 'has been received. 



Family ALYDIDAE Reuter. 

 (= Coreidae, Subfamily Alydinae L. & S.) 



Hyalymenus dentatus Fabr. One only from Bartica. 



Hyalymenus vespiformis Fabr. Bartica, one example. 



Hyalymenus tarsatus Fabr. Of this common form, there are 

 seven from Bartica and four from Mallali. 



Megalotomus pallescens Stal. Of this species, apparently not yet 

 recognized from the Guianas, there is one example from Bartica. 



Trachelium tesselatum Dist. Not uncommon in Bartica and 

 Mallali. 



Cydamus inauratus Dist. One specimen from Bartica and one 

 from Mallali. 



Bactrodosoma parallelum Stal. This species seemingly known 

 previously only from Brazil, is represented by four specimens from 

 Bartica. 



Leptocorisa tipuloides De G. Bartica and Mallali, common. 



Pachylis hector Stal. Mallali, four adults and one nymph. Ap- 

 parently not previously known from British Guiana, its southern- 

 most record being Panama. 



Nematopus Indus Linne. Bartica and Mallali, very common. 



Holymenia intermedia Burmeister. One example of this un- 

 common form from Bartica. 



Anisoscelis gradadia Distant. Mallali, one specimen. This form 

 has not been previously recorded from British Guiana. 



Spartocera granulata Stal. One from Mallali a new record for 

 British Guiana. 



Margus obscurator Fabr. Bartica, one example. Although this 

 species ranges from Mexico to Chile, there are apparently no 

 records of it from the Guianas. 



Namacus annulicornis Stal. Two specimens from Bartica, which 

 agree with a Mexican specimen of this species in my collection. 

 This locality greatly extends the range of the species and is the 

 first record from the Guianas. 



