216 BULLETIN" 182, UNITED STATES NATIONAL MUSEUM 



row deep excision, all angles rounded, sides straight. Female, apical 

 sternites not modified. Length, 41/2 to 5 mm. 



Type locality. — Colombia. 



Types. — Either in Hope Museum, Oxford, or Zoologische Museum. 

 Berlin. 



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



Trinidad: Montsorrat (Busck, in U.S.N.M.), San Rafael (Adamson, as Black- 

 welder station 444F). 



South America: (British Museum), Venkzuei.a (British Musennj), Colomhia 

 (Erichson, 1840). 



Specimens examined. — I have examined six examples in the British 

 Museum, two in the United States National Museum, and one collected 

 by Dr. A. M. Adamson on January 4, 1936. 



Remarhs. — This species appears to be properly associated with 

 Erichson's name jugaJifi. I have compared our specimens with the 

 South American examples in the British Museum. I do not have 

 enough material to determine its variability, but I believe it to be 

 fairly constant in the characters used in the key, 



I find no record of its habits. 



8. STENUa AUGUSTINUS, new species 



Description. — Piceous black. Head not impressed between the 

 eyes but vaguely elevated in front; without smooth areas; labrum 

 broadly rounded; punctures moderately coarse and deep, regular, 

 separated by much less than their diameter, intervals rather flat but 

 not sculptured. Pronotum one-fourth longer than wide, widest just 

 behind middle, moderately evenly narrowed in front, broadly emar- 

 ginate behind; punctures coarse and deep but very dense, separated 

 by less than one-half diameter by irregular convex intervals; without 

 ground sculpture. Elytra three-eighths wider than pronotum, one- 

 eleventh longer than wide; humeral callus not at all prominent; 

 punctation similar to that of pronotum but a little coarser and 

 sparser; without ground sculpture. Ahdomen not margined; with 

 same type of punctures as elytra but much less coarse and less dense ; 

 with traces of ground sculpture on the eighth tergite; pubescence 

 short. Tarsus with fourth segment strongly bilobed. Male., seventh 

 sternite very slightly emarginate; eighth sternite with a large tri- 

 angular notch about as deep as broad, angles narrowly rounded. 

 Female, seventh and eighth sternites not modified. Length, 4 to 

 41/^ mm. 



Type locality. — Trinidad, St. Augustine. 



Types. — Holotype, male, and one paratype, female, in the IMuseum 

 of Comparative Zoology, and one paratype, male, in the United States 

 National IMuseum (No. 52492) ; collected in April 1929 by Dr. P. J. 

 Darlington. * 



