WEST INDIAN APHODIINAE — OHAPIN 19 



5. ATAENIUS VINCENTIAE Arrow 



Ataeniua vincentiae Akbow, 1903, Trans. Ent Soc. London, p. 513. — Schmidt, 

 1922, Das Tierreich, pars 45, Aphodiinae, p. 450. 



Piceous-black, not shining, legs castaneous, antennae and trophi 

 paler. Anterior margin of head denticulate each side of very shallow 

 median emargination. Front near eyes densely and finely punctured, 

 more than anterior half coarsely and irregularly rugose, vertex mod- 

 erately coarsely and densely punctured. Pronotum with marginal 

 setae very inconspicuous, marginal grooves complete but ill defined. 

 Surface very densely and evenly punctured, the punctures slightly 

 more coarse than those on vertex. Elytral striae rather fine but 

 clearly defined, strial punctures evident but not conspicuous, intervals 

 flat but each with the median line acutely carinate, each carina broken 

 into a series of oblong points and with each break furnished with a 

 minute seta. Surface otherwise coarsely alutaceous. Lateral margin 

 acute, epipleura dull. Pygidial carina with a strong median cusp. 

 Mesosternum and lateral areas of metasternum shagreened, median 

 area of latter shining, coarsely and not densely punctured, median 

 groove terminated abruptly anteriorly. Abdominal sternites moder- 

 ately coarsely and rather densely punctured, basal transverse rows of 

 pits poorly defined except on terminal sternite. Anterior femur with 

 deep marginal groove on anterior margin, surface coarsely and ru- 

 gosely punctured. Posterior femur with trace of marginal groove 

 near insertion of tibia, surface shining, sparsely and not coarsely 

 punctured ; posterior tibia without apical spine. Length : 3.3-3.5 mm. 



Type. — In the British Museum. 



Type locality. — St. Vincent, British West Indies. 



Material examined. — A specimen from the type series by courtesy 

 of G. J. Arrow. Also two specimens from St. Vincent, February 10, 

 1936, R. E. Blackwelder (station 170), one specimen from 25 km. (by 

 road) south of Puerto Plata, Dominican Republic, June 1938, P. J. 

 Darlington, one specimen from Coamo Springs, Puerto Rico, Dec. 27, 

 1914, and two specimens from Coamo, Puerto Rico, March 24, 1929, 

 S. T. Danforth. There is also a specimen from La Ceiba, El Salva- 

 dor, Vera Wellborn, in the National Collection. 



6. ATAENIUS CORROSUS. new species 



Piceous, feebly shining, anterior margins of head and pronotum and 

 legs castaneous, antennae and trophi pale. Anterior margin of head 

 denticulate each side of shallow median emargination. Front and 

 vertex densely and moderately coarsely punctured, the punctures be- 

 coming finer anteriorly, region adjacent to anterior margin coarsely 

 and irregularly rugulose and free of punctures. Pronotum with mar- 

 ginal setae inconspicuous and with marginal groove very broad and 



