336 ORTHOPTEEA. 



1. Dactylotlim bicolor, Charpentier. 



Dactylotum bicolor, Charp. Qrthopt. Descript. et Depict, t. 52 (1845) '. 



Hab. Mexico 1 . 



The only reference to the habitat of this insect, the type of the genus, is that given 

 by Charpentier. Since the other species of Dactylotum are distributed over the table- 

 lands of Middle and Northern Mexico, it is quite probable that its habitat is to be 

 sought for in the same general region. 



2. Dactylotum flavopictum, sp. n. 



Moat closely related to the preceding by having the pale markings chiefly flavous or lemon-yellow. The 

 ground-colour is deep black, instead of tinted with blue, green, or brown. The other characters as 

 indicated in the synoptic table of the species. 



Length of body, <$ 22, $ 35; ofpronotum, S 6-75, $ 10; of tegmina, c? 5, 5 7'5 ; of hind femora, <$ 12, 

 5 17 millim. 



Hab. " Mexico " {coll. S. H. Scudder). 



No definite locality is given, save Palmer's assorting, No. 1221. This insect is 



apparently the least conspicuous of the species in the field, and, like the other 



members of the genus, must depend upon some obnoxious flavour as a means of 

 protection against bird and other vertebrate enemies. 



3. Dactylotum variegatum, Scudd. 



Pezotettix variegatus, Scudd. Proc. Bost. Soc. Nat. Hist. xx. p. 75 (1879) '. 



Dactylotum variegatum, Towns. Ins. Life, vi. pp. 30, 31 (1893) 2 ; Scudd. & Cocker. Proc. Dav. 



Acad. Sci. ix. p. 51 (1902) 3 ; Rehn, Proc. Acad. Nat. Sci. Philad. 1902, p. 725 4 ; 1904, 



p. 539 s . 



Hab. North America, New Mexico 345 to California 1 (Scudder), Silver City and 

 Arizona (coll. L. Bruner). — Mexico, Casas Grandes, Chihuahua 5 . 



4. Dactylotum picturatum, nom. now 



Dactylotum pictum, Grerst. (nee Thomas) Stett. ent. Zeit. xxxiv. p. 192 (1873) l . 



The present species, which was described under the same specific name employed three years earlier by 



Thomas, is distinct, as shown by the synoptic table given above. It must, therefore, have a new name, 



and 'picturatum is here suggested. 



Hab. Mexico 1 . 



While no material is at hand to illustrate Gerstaecker's species, the description 

 would indicate that it is most nearly related to, if not identical with, I), variegatum, 

 Scudder. The habitat " Mexico " does not indicate sufficiently close to be of any use 

 in deciding synonymy. 



