476 BULLETIN 18 2, UNITED STATES NATIONAL MUSEUM 



15. Elytra paler near apex (or outer apical angle) 16 



Elytra paler near base 5. humeralis 



16. Antennal grooves punctate 17 



Antennal grooves impunotate 3. fuscipennis 



17. Outer apical diagonal half of elytra testaceous *" 



Apex of elytra indefinitely paler 4. attenuatus 



1, XANTHOLINUS OAKLEYI, new species 



Description. — Head black, pronotum and abdomen rufopiceous to 

 riifocastaneons, elytra uniform castaneoiis or piceocastaneous. Head 

 over one-sixth longer than wide, distinctly but narrowly cordate in- 

 cluding mandible; antennal grooves strong, impunctate except for a 

 single apical puncture; without additional post-antennal grooves or 

 ocular grooves; with scattered umbilicate punctures of uneven size 

 leaving a smooth median area; without ground sculpture. Pro7\otum. 

 three-eighths longer than wide, widest in anterior third, evenly nar- 

 rowed posteriorly to rounded base; with median smooth area outlined 

 by two series of nine punctures, with lateral series of six or seven 

 punctures but almost no others; without ground sculpture. Elytra 

 not very coarsely or densely punctate, nearly all the ]:)unctures ar- 

 ranged in series; the intervals flat and indistinctly coriaceous. Ab- 

 domen sparsely but not very finely submuricately punctate, with 

 indefinite transverse strigulae. Length, 3i^ to 41/2 mm. 



Type locality. — Puerto Rico, 13 miles east of Maricao. 



Types. — Holotype and paratype, U.S.N. M. No. 52434, collected by 

 me on October 3, 1935; and one paratype from Villalba. 



Records. — The following are the records known to me : 



Hispaniola: Dominican Republic, Mount Diego de Ocampo (Darlington, in 

 M.C.Z.). 



Puerto Rico: Maricao (Blackwelder station 47A), Villalba (Blackwelder sta- 

 tion 62). 



Specimens examined. — I have seen only the three types and one 

 example from the Museum of Comparative Zoology. 



Remarks. — This species is distinguished by the serial arrangement 

 of the elytral punctures and the lack of extraserial punctures on the 

 pronotum. 



The types were found in dung and manure. 



2. XANTHOLINUS INSULATUS Cameron 



Xantholinns insulalus Camkron, 1922, p. 115. 



Xanthollmis insvlaria Fatjvkl. aiS. — Cameron, 1022. p. 115. — Scheerpeltz. 1033, 

 p. 1131 (misspelling). (Not Bornhauer, 1004.) 



Description. — Rufopiceous, head black. Head one-eighth longer 

 than wide, not enlarged behind the eyes, basal angles broadly rounded : 

 antennal grooves rather feeble though not shortened; ocular grooves 



" One specimen taken in qii.-irantine at New York City from cargo tliat oripinated in Haiti 

 seems very distinct. The absence of reliable data prevents its description liere. 



