516 ME. GUT A. K. MARSHALL ON COLEOPTEEA 



almost plane, bare, shiny, and impunctate. Legs elongate, especially the anterior 

 pairs, the hind pair reaching the apex of the 4th ventral segment, femoral tooth 

 triangular and denticulate ; front tibias with an obtuse internal tooth a little behind 

 the middle. 



Length 11^-12, width i\-i\ mm. 



Utakwa Hiver; 3 d" , 2 ? . {Including the tyj^es of the species.) 

 Allied to A. exornatus Chev., but readily distinguished by the parenthesis-like 

 markings on the elytra. The latter species, moreover, has the prothorax much more 

 coarsely and distantly punctate, with a broad central impressed line containing a 

 white stripe ; further, the second joint of the funicle is much longer than the first, 

 and the third and fourth are subequal. 



Alcidks exoekatus. 



Alcides exornatus Clievrolat, Naturaliste, 1880, p. 333. 

 Utakwa Eiver ; 1 $ . 



Alcides elegans. 



Alcides elegans Guerin, Voy. ' Coquille,' ii. pt. 2, 1838, Zool. p. 12-1'j pi. vi. fig. 6. 

 Mimika River ; 1 j , 6 ? . 



Alcides PBiEUSTus. 



Alcides prceustus Guerin, Voy. 'Coquille/ ii. pt. 2, 1838, Zool. p. 123. 

 Mimika Eiver ; 2 d , 2 ? . 



Alcides peofluens. 



Alcides projl.uens Pascoe, Ann. Mus. Civ. Genova, (2) ii. 1885^ p. 239. 

 Launch Camp, Setakwa Eiver (C Boden Kloss); 1 ? . 



Alcides incomptus, sp. n. 



cj . Niger, nitidus, setulis parvis depressis brunneis minus dense obsitus, protliorace in dorso 

 area magna subconica denudata, metasterno et abdomine et pedibus ferrugineis, coxis 

 omnibus et femoribus anticis in dimidio apicaU nigris; rostro fere recto nitidissimo ; funiculi 

 articulis duobus basalibus longitudine sequalibus, primo crassiore; prothorace subconieo, 

 antice leviter constricto, undique coufertim punctato ; elytris subcylindricis ad humeros 

 prothorace paulo latioribus, lateribus leviter sinuatis, interstitiis in parte discoidali Isevibus 

 subtiliter punctatis, alibi ruguloso-granulatis ; tibiis anticis in medio intus augulatis, 

 femorum dentibus non crenulatis, femoribus posticis segmentum ventris tertium nou 

 superantibus. 



Colour black, shiny, rather sparsely clothed above and on the sternum with very 

 short recumbent golden-brown setae, the prothorax with a subconical discal area 



