COLEOPTERA 201 



are probably derived from a single form should imagine a transition froi.n Mysticomenus 

 to Anckonymus agonoides. We have no such transition existing. BaTyndHs and Bary- 

 pristus, which would answer such a purpose in several respects, appear to ha ve only an 

 indirect relationship with either of the two forms. 



(i) Disenochus anontalus Blackburn. 



Disenochus anomahis Blackburn, 1. c. 



Distinguished from the allied species by the more ovate elytra, in conjunction with 

 a narrower head and thorax, and by the striae of the elytra being less deep and much 

 obliterated at the base, sides and apex. 



Hab. Maui : Haleakala, 5000 ft., March 1894, under logs in the forest, two speci- 

 mens (Perkins). Haleakala, 5000 ft., February 1S78 (Blackburn). 



(2) Disenochus brevipes, sp. nov. 



Niger, antennis, palpis pedibusque rufis ; robustus, capite lato, thorace transverse, 

 basin versus angustato, angulis posterioribus obtusis, elytris subovatis, sat profunde 

 striatis, striis omnibus integris, minus fortiter punctatis. Long. 10 mm. 



Head large, with large impressions between the eyes, mandibles thick. Thorax 

 broader than long, rounded at the sides and narrowed behind, front angles not at all 

 prominent, surface impunctate, depressed near the obtuse hind angles. Elytra large, 

 shoulders rounded, the sides but little sloped : rather deeply striate, and with the striae 

 distinctly punctured ; the interstices near the suture and base a little convex. 



Hae. Molokai (Perkins): 4500 ft., two specimens 15th and 18th June 1893; one 

 specimen at the same elevation in Sept. or Oct., all females. A fourth specimen, of the 

 male sex, found in the same locality iSth June 1893, is rather smaller and narrower. 



An Acariis or two were attached to one of the specimens. 



(3) Disenochus cephalotes, sp. nov. 



Niger, antennis palpisque rufis, pedibus rufo-piceis ; robustus, capite lato, thorace 

 baud transverso, basin versus angustato, angulis posterioribus obtusis, elytris subovatis, 

 sat profunde striatis, striis omnibus integris. Long. 9^ mm. 



\'ery near to D. brevipes, but with a rather narrower thorax, and less deeply striate 

 elytra, the striae not punctured. 



Hab. Maui (Perkins): West Maui mountains, 4000 ft., April 1894, one pair (J?). 



26 — 2 



