472 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.51. 



CRYPTORHYNCHIDAE, new family. 



EURHININAE, new subfamily (Barini), 



Genus EISONYX LeConte. 



Eisonyx LeConte, Trans. Amer. Ent. Soc, vol. 8, 1880, p. 216. Type, crassiprs 



LeConte. 

 Eumononycha Casey, Ann. N. Y. Acad. Sci., vol. 7, 1893, p. 601. Type, opar<i 



Casey. 



The species of this genus are exceedingly rare. The writer has 

 before him ten specimens, representing three distinct species. Owing 

 to the apparent transition furnished by one of these species between 

 the typical Eisonyx and the typical Eumononycha it seems better to 

 unite these as subgenera under Eisonyx, the genus being character- 

 ized by the single claw, and the connate first and second abdominal 

 segments. 



TABLE OF SUBGENEEA OF EISONYX. 



1. Elytral striae all but completely obsolete, indicated by foveae at base and very 



faint depressions Eisonyx LeConte. 



2. Elytral striae complete Eumononycha Casey. 



Subgenus Eisonyx LeConte. 



Only two specimens of Eisonyx crassipes LeConte from Texas have 

 heretofore represented this species, and were to be found in the Le- 

 Conte and Horn collections. Two other specimens were taken by 

 the writer May 25, 1906, on Physalis cornuta at Dallas, Texas, on a 

 railway embankment of the Santa Fe Railway in East Dallas at a 

 point near where Mount Aubm-n car line crosses this railway. Every 

 year since then repeated searches have been made in every conceiva- 

 ble place in this neighborhood without yielding another individual. 



A character not mentioned in the previous descriptions of this 

 species and which may possibly differentiate the DaUas specimens is 

 a large broad median depression on the first and second abdominal 

 segments, and the complete fusion of these segments in the middle. 



Subgenus Eumononycha Casey. 



TABLE OF SPECIES OF EUMONONYCHA. 



1. Body rhomboidal, shaped as in Eisonyx, but legs more slender; elytral striae strong 



at base, becoming very faint but distinct behind, elytral punctuation minute 

 and sparse, body somewhat shining pidpcs, new species. 



2. Body oval; legs moderately slender; elytral striae strong throughout; elytral punc- 



tuation dense, but very shallow, body opaque opaca Casey. 



EISONYX (EUMONONYCHA) PICIPES, new species. 



Described from one specimen collected at Nashville, Tennessee, in 

 September in a strawberry field. 



