1919.] NATURAL SCIENCES OF PHILADELPHIA. 63 



for a specimen from ''Arizona or Northern Mexico," which we 

 now know to be a shrivelled alcohoUc individual of Mermiria 

 texana. 



Matenal. — In the preparation of the present paper the types 

 of the following species have been examined by us: 



Mermiria texana Bruner. 



Papagoa arizonensis Bruner (synonym of M. texana). 



Opomala neo-mexicana Thomas. 



Mermiria alacris Scudder. 



Mermiria vigilans Scudder (synonym of M. alacris). 



Mermiria intertexta Scudder. 



Mermiria maculiyenms Bruner. 



Mermiria maculipennis macdungi new subspecies. 



The entire series of the genus examined by us and here I'ecorded 

 numbers 1514 specimens. The majority (938) of these were 

 taken by Rehn and Hebard on recent trips and are located in 

 the Hebard Collection and that of the Academy of Natural Sci- 

 ences of Philadelphia. Of the remainder of the representation 

 we have had before us, 50 specimens were from the Hebard Col- 

 lection ex Bruner, 33 specimens from the Scudder Collection at 

 the Museum of Comparative Zoology at Cambridge, Massa- 

 chusetts, 73 specimens from the United States National Museum, 

 39 specimens from the collection of Prof. A. P. Morse, 12 from 

 that of Prof. M. P. Somes, 3 from the Illinois State Laboratory 

 of Natural History, 103 from the Academy of Natural Sciences of 

 Philadelphia (other than Rehn and Hebard collecting), and 263 

 specimens from other collections and institutions, including the 

 Hebard Collection other than Rehn and Hebard collecting and 

 ex Bruner. In addition to this material we have re-examined 

 considerable material already recorded by Rehn and Hebard, 

 and not included in these totals. All the institutions and collec- 

 tions represented in the studied series are indicated by their initials 

 in the summaries of material under the species, with the exception 

 of the series collected by Rehn and Hebard, which it should be 

 understood, are in the Hebard Collection and that of the Academy 

 of Natural Sciences of Philadelpliia. 



We wish to express our hearty thanks to the above mentioned 

 gentlemen, and the authorities of these museums for their assist- 

 ance in the present study. We have been able, with their assist- 

 ance, to gather together a sufficiently extensive and representative 

 series of the genus to give authority and permanency to the con- 

 clusions here reached. 



