1877.] 37 



THREE NEW SPECIES of LONGICORN COLEOPTEBA FROM JAPAN. 

 BY H. W. BATES, P.L.S. 



I have been favoured by Mr. Greorge Lewis witli tlie opportunity 

 of describing the following three interesting new species of Longicorns 

 from Japan, which increase the total number recorded from those 

 islands to 21i. 



Allotej^us, nov. gen. 



kSub-fam. Phoracanthince. 

 Corpus elongatiim, angusiam, supra planatum. Caput hreve ; ocidis p)rominulis 

 profunde emarginatis. Tuhera antennifera vix elevata, ohtttsa. Antennm ( ^ 1) 

 corpore paulo longiores, setacem, articuUs 2—7 stibtus longe ciliatis, articulo 4^0 

 jjrcecedenti et sequenti paulo breviori, tertio supra canaliculato, 3—6 apicibus intus 

 breviter spinosis. Thorax oblongus, medio paululum dilatatus, supra quadri- 

 tuberusus. Elgtra omnino punctata, apice utrinque juxta suturam emarginata et 

 bispinosa. Femora modice clavata ; tibice posticce haud canaliculatcB ; coxm antica 

 rotundatcB, haud exsertcB ; prosternum et mesosternum sublata, plana. 



A genus in some degree intermediate between Lacordaire's 

 " Groupes " Fhoracantlildes and Sphcerionides ; agreeing with the 

 latter in facies, but in most of its characters with the former, which 

 consists solely of American species. 



AlLOTR^US SPHiERIOIflNUS, 11. Sp. 

 Elongatus, sparsim piibescens, vix nitidus, testaceo-rufus, anfennis pedibusque 

 nigris ; supra crebre at discrete ptmctatus, thoracis spatio dorsali Icevi, nitido ; 

 elytrorum apice prope suturam breviter emarginato et bispinosa. Long. 7 Hn. 



Leptoxenus, nov. gen. 



(Suh-familcB Elifjmoderminarum affinis) 



Corpus lineare. Tubera antennifera vix elevata. Antenna ( $) corpore 

 paulo longiores, filiformes, midcB, teretes, articulo tertio quinto breviori, quarto 

 paulo longiori. Thorax breviter cylindrictis, elytris angustior, lateribus utrinque 

 unituberosus, dorso inmqualis. Elytra valde elongata, apice rotundata tit in speciebus 

 ■nonnullis generis Ibidion figurata. Pedes graciles, femora vix incrassata,tarsorum 

 articulo primo valde elongato. Coxcb anticm exsertee, prosternum mesostertiumque 

 angusta. 



This genus, like AUotrceus, resembles Tropical American much 

 more than Old World forms. It scarcely comes within the definition 

 of Lacoi'daire's Groupe Eliginodermides, owing to its depressed 

 antenniferous tubers. 



Leptoxenus Ibidiiformis, n. sp. 

 Sub-fam, Pogonocherincs. 

 Linearis, subopacus,fulvo-testaceus, thorace plagis duabus dorsalibus atrofuscig, 

 elytris fasciis trihus pallide-testaeeofuscis, apice fasciaque obliqua flexuosa ante 

 apicem albo-testaceis. Long. 6i lin. 



