P. J. Darlington, Jr.
Dytiscus habilus Say and Loxandrus infimus Bates in Texas.
Psyche 45:84, 1938.

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Psyche
[March
DYTISCUS HABILIS SAY IN TEXAS
In the Schaeffer collection of Dytiscus, which was recently presented to the Museum of Comparative Zoology through the kindness of Mr. Kenneth W. Cooper, were two male specimens of Dytiscus habilis Say from Alpine, Texas, dated June 2. This Mexican species seems not to have been re- corded before north of the border. It is close to C. margini- collis Lee. but is smaller (24 to 26 mm. long), more evenly oval, with prothorax even more broadly margined with yellow in front and behind. These two Texan specimens have been compared with four from Mexico in the M.C.Z. LOXANDRUS INFIMUS BATES IN TEXAS
Of Loxandrus infirnus Bates, previously known only from Mexico and Central America, I took a series at Brownsville, Texas, June 11-16,1933, at light and in cracks in dried mud on the edge of a pond. Dr. Fritz van Emden has kindly compared two of my specimens with Bates' types in the British Museum.
This species differs from all other Loxan- drus found north of Mexico in being dull and not iridescent, with distinct alutaceous microsculpture on the elytra.



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