MONOGRAPH OF WEST LNDIAJST STAPHYLINIDAE 377 



the coxae and united with the hj^pomera ; front coxae very large, ex- 

 scrtcd; middle coxal cavities confluent; posterior coxae contiguous, 

 ^'conical"; abdomen strongly margined, first and second sternites ab- 

 sent, third longitudinally carinate at base ; tarsi 5-segmented, middle 

 tibia not spinose on outer side. 



Remarks. — This genus contains some of the largest staphylinids 

 known from the West Indies. It is readily distinguished from all 

 o Liter West Indian genera by the enormously expanded anterior tarsi. 



Many of the species are very difficult to distinguish by external 

 characters, but the median lobe of the male aedeagus provides satis- 

 factory characters. These may often be observed in undissected speci- 

 mens, but the removal of the aedeagus and the mounting of it sep- 

 arjitely are very easy and much to be recommended. 



I have examined 86 examples of tliis genus and assign them to 13 

 species, of which 9 are new. One other species described from the West 

 Indies is not available to me. 



KEY TO WEST INDIAN SPECIES OF PINOPHILUS 



1. Prouotum with dense gronnd sculpture 2 



Pronotum shining, without ground sculpture 7 



2. Ground sculpture of minute punctulae 3 



Ground sculpture of minute reticulations 6 



3. Head with three distinct sizes of punctures between the eyes 4 



Head with only very large and very small punctures between the 



eyes 8. bierigi 



4. Eighth sternite of male broadly truncate 5 



Eighth sternite of male somewhat produced and then narrowly truncate. 



11. aguayoi 



5. Punctures along midline of pronotum often separated by neai'ly their dia- 



meter 9. flavipes 



Punctures never separated by more than half their diameter. 



10. hispaniolus 



6. Pronotum impunctate along midline 12. insig'niventi'is 



Pronotum without impunctate median band 13. schwarzi 



7. Elytra red ; length 6.5 mm 1. vermif ormis 



Elytra black; length 12 to 18 mm 8 



8. Pronotum as broad as or broader than long, coarsely punctate 9 



Pronotum longer than broad, finely punctate 11 



9. Elytral intervals flat, only slightly rugose 5. subterraneus 



Elytral intervals convex, strongly rugose 10 



10. Intervals near basal angles of pronotum with numerous or dense punctulae. 



7. jamaiceusis 

 Intervals at most with scattered punctulae 6. darlingtoni 



11. Sides of pronotum parallel 4. trinitatis 



Pronotum distinctly broader in front 12 



12. Pronotum very sparsely punctate except near midline 3. cubanus 



Pronotum moderately densely punctate, a little more sparsely at sides. 



2. danforthi 



449008—42 25 



