REHN AND HEBARD 153 



tremely numerous and the material was in excellent condition, so 

 it is quite probable that it lasts considerably past the end of July. 



We have seen no nymphs of the species and, in consequence, 

 cannot give any data regarding that condition. 



Morphological Notes.— There is some little variation in the char- 

 acter of the angle of the caudal margin of the pronotal disk, this 

 in numerous specimens being more distinctly rectangulate and not 

 quite so rounded as in the type specimen; in many the immediate 

 angle is produced as a more or less evident point. The number of 

 rami to the discoidal vein varies from three to five, four being the 

 average number. The series shows the following combinations in 

 the number of discoidal rami: 3-3,2 cf d", 1 9 ; 3-4, 8 cf cf , 2 ? 9; 

 4-4, 16 c? cf , 9 9 9 ; 4-5, 2 d^ d^, 6 9 9 ; 5-5, 2 o^ d^, 3 9 9 . It 

 will be seen from this that the lower combinations predominate in 

 the male and the higher ones in the female sex, but how much im- 

 portance should be attached to this apparent correlation is doubt- 

 ful, as the material is not equally divided between the sexes. It is 

 evident, however, that in eighteen of the specimens examined the 

 number of rami on the two ^egmina do not agree. The form of the 

 margin of the stridulating field in the male shows no appreciable 

 variation. The apex of the subgenital plate of the male shows 

 some variation in width and also in the depth and rotundity of the 

 emargination, but the general form departs very little from that 

 described and figured. 



Sijnomjmy. — It is very evident from an examination of Brun- 

 ner's description of gracilipes as understood by him, that it refers 

 to the present species and not to the form to which Thomas origin- 

 ally gave that name. The key characters alone — the form of the 

 apex of the stridulating vein of the male tegmina and the produced 

 dorso-genicular extremities of the cephalic and median femora — 

 show immediately that he had a member of the phalangium-gral- 

 lator group, while his measurements, color details and locality re- 

 move the former, which he there described as multiramosa, from 

 consideration. •Caudell's reference of Victoria, Texas specimens 

 to phalangium is erroneous, an examination of the material showing 

 that it belongs under the present species. 



Remarks. — The present form is a western complement of phalan- 

 gium, differing chiefly in characters which are not striking but con- 

 stant. In size there is a considerable amount of individual varia- 



TRANS. AM. ENT. SOC, XL. 



