630 K. JORDAN 



pronotum interrupted (or nearly so) in tlie middle, the fulvous 

 tomentum of the elytra somewhat more extended, the black 

 mark within the fulvous sides of the pronotum larger, and the 

 second joint of the antennae more obviously read ; but as the 

 Javan individuals are by no means constant in respect to these 

 characters, I leave the Sumatran specimens under the name 

 of grisescens. 



Ilab. Si-Rambé, Sumatra (Modigliani) ; a series. 



18. Acorynus sulcicollis, spec nov. 



c/'9. Similis A. nigrescenti et A. distinguendo (1895). An- 

 tennae brunneae^ basi rufae; clava nigro-brunnea ; articulis 3°-8*' 

 gradat'im decrescentibus, 8** dimidio noni paulo longiore. Prothorax 

 supra sidco antemediano transverso sat pro/undo dislincto notatus^ 

 laeviSj, viltà mediana aequilata in sidco paulo angustiare^ puncto 

 indistincto ulrinque in sulco sito lateribusque — duabus maculis 

 nigris plus minusve confluis exceptis — luteo-griseis; carina an- 

 tebasali in latere magis prolongata quam in specie distinguendus 

 dicta. Elytra ut in specie grisescens dicta signata, femora 4 antica 

 infra rufa ( Z')^ vel nigra ( ? )j griseo-annulata; tibiae triente apicali 

 excepto rufae„ inlermediae apice ( c/') dente armatae; tarsi rufi,, ar- 

 ticulis apice nigro-brunneis. 



Agrees in size closely with .1. distinguendus, while in the 

 pattern of the upperside it is almost the same as grisescens; 

 differs, however, from both species in the pronotum being trans- 

 versely sulcate before the middle; from grisescens it is, moreover, 

 distinguished by the 8"' antennal joint being shorter than the 

 7"' (while in grisescens the 8"* is longer and obviously broader 

 than the 7"'), and in the male by the middle tibiae being armed 

 with a hook at the tip. 



JIab. Si-Rambé, Sumatra (Modigliani); a number of both sexes. 



19. Acorynus lineolatus (1894), Jordan, Novit. Zool. I, p. 0^0, 

 n. 47 (Perak). 



The median vitta of tlie jironotum is rather widely interrupted, 

 and the disc of tiie pronotum less rugosely punctureil than in 

 Perak specimens. 



Ilab. Si-Rambé, Siniiatra (Modigliani); a series. 



