310 Mr. T. V. Wollaston on the CoUoptera of St. Helena. 



chandise, is of course totally unconnected with the true fauna 

 of the island. It has been established equally in the Madeiran, 

 Canarian, and Cape Verde groups. 



Genus 13. Attagenus. 

 Latreille, Hist. Nat. iii. 121 (1802). 



15. Attagenus glorioscB^ . 



Anthretius Gloriosa, Fab., Syst. Eleu. i. 107 (1801). 

 uEthriostoma gloriom, Motsch., Etud. Ent. 146 (1858). 

 Attogenus Glorioscp, WolL, Ann. Nat. Hist. vii. 301 (1861). 



Of this prettily fasciated Attagenus — Avhich has acquired, 

 through the medium of commerce, an almost cosmopolitan 

 range — two examples, now before me, were captured \>j Mr. 

 Melliss at St. Helena. The species has established itself like- 

 wise in the island of Ascension — where it was taken, during 

 April 1860, by the late Mr. Bewicke ; and it is reported also 

 from India, Eastern Africa, and America. 



Fam. 7. Histeridae. 



Genus 14. Tribalus. 



Erichson, in Klug, Jahrb. i. 164 (1834). 



16. Tribalus 4-strmtus, n. sp. 



T. rotundato-ovaHs, piceo-niger, nitidus, ubique (in disco levius) 

 punctatus ; fronte mimitius punctulata, subsemicirculari, anguHs 

 anticis subrectis, oculis parvis, simplici (nee transversim cari- 

 nata); elytrorum striis 4 dorsalibus sat profundis, punctatis, 

 usque ad medium ductis, suturali nulla sed ad basim ipsam bre- 

 viter arcuatim conspicua, humerali tenui obliqua ; pygidio per- 

 peadiculari ; antennis pedibusque piceis ; tibiis anticis leviter 

 circa 5- vel 6-denticulatis. 



Long. corp. lin. vix 1|. 



The rather small size and entirely punctulated surface of 

 this little Ilisterid, combined with its semicircular wncarinated 

 forehead, and the fact of its elytra being totally free from a 

 sutural stria (which is only traceable as a very short subscu- 

 tellar arcuated impression), affiliate it with the small group 

 of species which constitute the genus Tribalus] but k seems 

 to differ {inter alia) from the whole of them in having fotir 

 very distinct dorsal punctured striae continued to about the 

 middle of each elytron. Apart from other characters, its 

 piceous-black hue, subrufescent limbs, and perpendicular py- 

 gidium will serve additionally to distinguish it. The single 

 example from which the above diagnosis has been compiled 



