244 NEW NORTH AMERICAN DECTICINAE 



In addition to the type and allotype we have before us a para- 

 typic series of five males and five females from Venvidio, Sinaloa, 

 Mexico, taken by J. A. Kusche on dates between August 11 and 

 September 2, 1918. The male specimens show variation in the 

 extent to which the speculum is occupied by anastomosing reticu- 

 lations, these occasionally uniformly occupying all of the specu- 

 lum. 



In one male and one female (allotype) we find one of the ventral 

 pair of distal spurs on the caudal tibiae absent. These prol^ably 

 have been acciflentally lost, in both cases the missing spur being 

 absent from the external side. The type is the only specimen 

 bearing spines on the dorso-cephalic margin of the cephalic tibiae, 

 while the dorso-caudal margin of the same has in the series from 

 four to five spines, generally four. The median tibiae have the 

 spines of the dorsal surface varying from three to six on the ce- 

 phalic, generally five, and three to eight, genei'ally five, on the 

 caudal margin. 



In addition to the adults we have before us seven male and 

 fourteen female immature specimens, taken at Venvidio, Aug- 

 ust 8 to September 2, 1918, l:)y Kusche. The males represent 

 the two instars preceding maturity, the females represent the 

 three instars preceding maturity. These individuals show that 

 in the male acx the proximal cereal tooth is well indicated in the 

 instai' i:)receding matui'ity, while in the female sex the projection 

 on the seventh sternite is very slightly developed in the same 

 instar. 



PEDIODECTES Ptehn and Hel^ard 



1894. Orchesticus Scuddcr, (not of Saussure, 18.59), Can. Ent., xxvi, pj). 178 



and 180. 

 1910. Pcdiodrdes Rehn and Hebard, Trans. Am. Ent. Soc, xlii, p. 45. 



The name SUpaior was proposed in 1900 by Rehn for Orchcstiais 

 of Saussui-(^, which had l)een found to ho preoccupied by Or- 

 chedicus of Calxanis. For some time Stipator was used for the 

 species of the present genus, but in 1916 it was found that the 

 genotype, (imericanus of Saussure, was a member of the g(MUis 

 Atlanticus of ScuddcM-, dcsciibcd in 1894. In consequence Stipdlor 

 fell as a synonym of AtUuiiicui< and it was necessary to propose a 

 new name for the genus of which a new species is descril)ed below. 

 The type of the genus is (jnindis of Helm. 



