30 Mr. Ct. Meade-Waldo on 



Hob. Tahquitz Valley, San Jacinto Mfcs., California, 

 8000 ft., July 21 (F. Grinhell, Jr.). 



A female taken at the same time and place proves to be 

 only P. poUfolii. 



Prosopis pasadence, sp. n. 



S . — A very small species, in every way related to 

 P. mesillce, Ckll., but distinguished by the upward extensions 

 of the lateral face-marks, which, instead of being short and 

 broad, are long and slender, curving away from the orbits. 

 The tubercles are variable, dark or spotted. Unlike the 

 P. dujitata group, the outer margin of the lateral face-marks 

 is even, without any notch or angle at the beginning of the 

 upward process. The first abdominal segment is very shiny, 

 the second dullish. 



? . — Like that of P. cressoni, Ckll., but the wings greyish ; 

 or when the clypeus is not entirely dark, like that of P. mesillce 

 in its darker forms, but lateral face-marks pointed above, 

 away from orbit, and upper margin of prothorax all black. 



Hah. Pasadena, California, April 8 to May 31 (F. 

 GrianeU, Jr.) ; near Pasadena, at 1100 ft., July 21 (F. 

 Gr inn ell, Jr.). 



V. — New Species of Diploptera in the Collection of the British 

 Museum. By Geoffrey Meade- Waldo, B.A. 



(Published by permission of the Trustees of the British Museum.) 



Part I. 



During a recent rearrangement of this family in the National 

 Collection I have found a number of species which are 

 apparently undescribed ; of these species I have now written 

 descriptions, which I hope to publish in two or three 

 consecutive papers. 



In the present paper there are descriptions of new species 

 of the families Masaridse aud Eumenida; (as far as the 

 genus Rhynchium). 



All measurements of length are taken from the front of 

 the head to the apical margin of the second abdomiual 

 segment, except where the total length is expressly mentioned. 



The types are all in the National Collection. 



