MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 421 



puncture is clearly out of line it is not counted. This method was 

 taken into consideration in the key in the case of the species not repre- 

 sented by specimens at hand. All references to this character are 

 corrected to this method. 



Musicodenis apparently cannot be retained even as a subgenus, at 

 least as far as our one species is concerned. Dr. Cameron expressed 

 to me his opinion that it is a synonym of Belonuchus and I concur 

 in this opinion. 



The record of Musicoderus cephalotes Sharp from Jamaica by 

 Gowdey, 1926, is probably a misidentification. Until the specimens 

 can be reexamined, it must be regarded as a doubtful record. 



Of West Indian specimens I have examined 256, which I assign to 

 16 species of which 7 are believed to be new. 



KEY TO WEST INDIAN SPECIES OF BELONUCHUS 



1. Elytra bright rufous or testaceous with head and itronotum black 2 



Elytra black, bluish, or body rufescent throughout 4 



2. Abdomen bicolored 3 



Abdomen unicolorous 11. mundus 



3. Abdomen rufotestaceous, apex black 14. rufipennis 



Abdomen black, apex rufotestaceous 12. satyrus 



4. Apex of abdomen abruptly paler 5 



Abdomen unicolorous 10 



5. Dorsal series of pronotum with five punctures 6 



Dorsal series of pronotum with less than five punctures 9 



6. Apical segment alone paler 5. amplus 



Two or more apical segments paler 7 



7. Head and pronotum bluish 6. coelestinus 



Head and pronotum black or piceous 8 



8. Length 7 mm. or less 9. bugnioni 



Length about 10 mm 8. agilis 



9. Pronotum with single pair of dorsal punctures 7. cognatus 



Pronotum with dorsal series of three punctures is 



10. Front of head with a longitudinal depression 12 



Front of head without longitudinal depression 11 



11. Front of head with broad concavity 3. trinitatis 



Front of head entirely without depressions 10. danforthi 



12. Dorsal series of pronotum with four punctures 2. oakleyi 



Dorsal series of pronotum with five punctures 13 



13. Abdomen (and sometimes other parts) rufous 14 



Abdomen black or piceocastaneous 15 



14. Pronotum distinctly narrowed posteriorly 16. antiguae 



Pronotum not distinctly narrowed posteriorly 13. dominicus 



15. Punctures of elytra generally separated by about their diameter or more_ 16 

 Punctures of elytra separated by much less than their diameter. 



1. hispaniolus 



''One specimen in tiie present collection runs out at this point in the Ivey. It wns lalcen 

 by the Plant Quarantine Service at New York from boats that had come last from I'iilia. 

 Inasmuch as there is considerable chance of error in assuming that Cuba is the actual 

 home of the species, it Is not named or described here. 



