10 CATALOGUE OF 



Genus 3. TARRAGA. 



Mas. Corpus ellipticuin, opacum, subtilissiino tuberculatum. Caput 

 paivuin. Oculi late disjunct!. Palpi graciles ; articulus 3us linearis, 

 2o vaUie lon-^ior. Antennie graciles, setaceae, submoniliformes, corporis 

 diniidio non longiurcs. Prothorax ft-re semicircularis, caput longe superans, 

 margiuo poslico siibangulato. Abdominis segmenta dorsalia laleribus 

 foliaciis ventreni late includentibus angulis posticis elongatis; lamina sub- 

 analis iruncata, Inlobata. Cerci breves, oblique asceudentes. Pedes breves, 

 robust! ; tibiarum spinaj brevissimae ; arolia obsoleta. 



Alalc. Body elliptical, dull, very minutely tuberculate, smooth and 

 sLining beneath. Head small, flat. Eyes wide apart. Palpi slender; 

 third joint linear, much longer than the second. Antenna slender, seta- 

 ceous, submoniliform, about half the length of the body ; first joint long; 

 second, third and fourth short; the following joints very small, successively 

 increasing in length. Piothorax nearly semicircular, extending much 

 beyond the head ; hind border sli<;htly angular. Mesothorax and meta- 

 thorax wiih the hind angles slightly elongated. Metathorax obliquely 

 covering most of the fiist abdominal scf^ment and the fore sides of the 

 second abdominal segment. Sides of the dorsal abdominal segments foli- 

 aceous, with elongated hind angles, extending much beyond the ventral 

 segments; subanal lamina truncated, bilobed. Cerci stout, short, ob- 

 liquely ascending. Legs short, stout; tibiis with very short spines; first 

 joint of the tarsi much longer than broad; fifth much longer than the 

 fourth; arolium obsolete. 



The structure of the abdomen of this genus distinguishes it from 

 Polyphaga. 



1. Tarraga guttiventris. 

 Mas. Ferriiginea ; prothorax maciilis duubus iiigricantihus glabris ; 

 pectus testacenm ; abdomen vitlis duubus nigricantibus subarcuatis ; 

 renter vitlis duabus nigris macularibus. 



Male. Ferruginous, paler beneath, Antennse black. Prothorax with 

 a smooth blackish spot on each side in the disk at one-third of the length 

 from the hind border. Pectus and trochanters testaceous. Abdomen with 

 two slightly curved blackish stripes, which conver>;e towards each other iu 

 front aud behind ; under side with two corresponding macular black stripes. 

 Length of the body 13 lines. 



a. Rio Janeiro, Presented by — Busk, Esq. 



Genus 4. SISAPONA. 



Fcem. Corpus ovatum, opacum, subtilissime hirsutum, antice con- 

 vexum. Caput transverse striatum. Oculi late disjunct!. Palporum 

 articulus 2us clavatus ; 3us subsecuriformis, 2o valde longior. Antenna; 

 selaceae, setuloste, corporis dimidio longiores. Prothorax fere semi- 

 circularis, caput paullo superans, lateribus subreflexis, margine postico 

 utrinque subsinuato. Abdominis segmenta dorsalia ventrem includentia, 

 angulis posticis elongatis acutis; lamina subanalis bilobata. Cerci breves, 

 lati. Pedes breves, validi ; femora anlica subtus spinosa; tursi robusti ; 

 arolia miniiua. 



