490 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.40. 



MYRMECOLAX NIETNERI Westwood. 



The male referred to by Green (1902) as Elenchus tenuicornis (see 

 Bull. 66, p. 57) has been kindly loaned to the writer and identified 

 as above. The slide bears the following data: "Caught at light, 

 March, 1902, Yatujantota, Ceylon." 



XENOS, species. 



The proportion of sexes and location of the parasites found in the 

 Polistes variatus, collected by W. L. McAtee at Church's Island, North 

 Carolina, are discussed on another page. One observation, however, 

 is of considerable importance. Three wasps were found hibernating 

 with male pupa?, which probably only died because the hosts died. 

 It is not known to the writer that hibernating male pupa? have ever 

 before been found in Polistes. 



INTERNAL STRUCTURE. 



The admirable translation into German of Nassonov's works by 

 Sipiagin, together with the recent notes on the same by Hofeneder 

 (1910c), have placed this valuable series of papers on the internal 

 structure of the Strepsiptera in a far more available form, especially 

 for American students. 



Correction : On page 60, Bulletin 66, next to last line, Aecilius was 

 incorrectly spelled Acilius. 



We find in Hofeneder' s (19106) description of the female Sticho- 

 trema dallatorreanum, a very peculiar arrangement of genital canals, 

 which are described as being in three rows of 12 to 14 canals each. 



Mr. Karl Strohm (1910) has pointed out that eyes of Xenos (rossii) 

 vesparum are "ocellare Komplexaugen," meaning that the lenses are 

 continuous, but are interrupted on the surface by partitions. 

 DESCRIPTIONS OF STREPSIPTERA. 



Correction: On page 84, Bulletin 66, the sentence on the second 

 line reading "Alimentation probably osmotic," should be omitted. 



Superfamily MENGEOIDEA Pierce. 



Family MENGEIDtE Pierce. 

 Genus TRIOZOCERA, emendation, 

 Trioxocera Pierce, 1910 (typographical error). 

 By an inadvertent following of an error in a preceding paper (Pierce, 

 1908) the generic name Triozocera was spelled Trioxocera. Application 

 has been made to the International Rules Committee for permission 

 to amend the spelling to its proper form. 

 The genus contains two species. 



KEY TO SPECIES— MALES. 



Oedeagus very slender, sinuate; medius with two superior branches. 1. mexicana Pierce. 



Oedeagus stouter, almost straight in basal two-thirds; medius with one superior 



branch 2. texana, new species. 



