wt 



Ith Descriptions of New Forms. 217 



Schizoblattina gen. nov. 



Small cockroaches ; veins of the tegmina numerous, much 

 branched, and united in all parts of the wing by frequent, com- 

 paratively strong, cross veins. The main vein trunks are free 

 almost or quite to the base, and show a tendency to disappear 

 by dichotomy. Subcostal area broad at the base, strongly 

 developed, with numerous superior branches. Some of the 

 anal veins end on the anal furrow. 



Schizoblattina is apparently .not closely related to any 

 described genus. Neorthoblattina albolineata Scudder, a 

 small species occurring near Fairplay, Colorado, resembles it 

 in its numerous, much branched veins united by straight, com- 

 paratively strong, cross veins. The anal veins also present 



28 29 



Figure 28. — Schizoblattina multinervia sp. nov.; x 2. 



Figure 29. — Etoblattina coriacea sp. nov. ; x 2. Anal area restored from 

 the obverse side of same specimen. Original in University of Kansas 

 Museum. 



the peculiarities of Schizoblattina, the first anal giving off 

 several branches which run toward the anal furrow. The 

 other species, including the type of Neorthoblattina, have two 

 of the main veins more or less completely amalgamated. That 

 this is also true of N. albolineata is not clear from the figure, 

 nor is this point specifically mentioned in the description. It 

 is evident from the peculiar disposition of the anal veins, the 

 occasional cross nervules, and the prolific branching of the 

 veins, that N. albolineata is markedly different from the other 

 species of the genus in which it is at present, placed, and as 

 far as it is possible to judge from the illustration seems to fall 

 more naturally in Schizoblattina. 



The geological age of the Fairplay beds, from which N. 

 albolineata came, is unsettled, the formation having been 

 referred both to the Triassic and to the Permian. 



Schizoblattina multinervia sp. nov. Text-figure 28. 

 This Journal, vol. xv, pi. vii, fig. 6, April, 1903. 



Tegmina small, a little more than twice as long as broad. 

 Costal and inner borders both arched, sloping gradually and 

 equally to the apex, which is placed about the middle of the 



