296 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxii. 



spined above on the outer margin with from one to three spines, 

 usiiiill}^ two, and on the inner margin with a single apical spine; pos- 

 terior tibiae armed below with two apical spurs; plan tula large and 

 distinct, as in the preceding genus. kSupraanal plate concealed 

 l)eneath the last abdominal segment, which is broad in both sexes, 

 larger in the male; subgenital plate long and broad, more narrowly 

 rounded apicalh' in the female; in the male furnished on each side 

 with a short apical style; cerci of both sexes simple, conical; oviposi- 

 tor noticeably shorter than the posterior femora and curved quite 

 strongly upward. 



Type.—iVeduba carmata Walker. 



The males of this genus, like those of the preceding one, has a pair 

 of infracercal plates, figs. 7, 10, 11 ip. The last abdominal segment is 

 considerably distorted in many cabinet specimens. 



We have three species of this genus — the type species and two new 

 ones herein descrilied. These species and a varietal form of narhiata 

 may be separated as follows: 



KEY TO THE SPECIES OF NEDUBA. 



A. Last abdominal segment of the male with the outer a|)ical corners angular; 

 infracercal plates very broad, the portion beyond the last abdominal segment 

 not or scarcely longer than broad and apically unarmed (figs. 7, 10). 

 B. Infracercal plates of the male together scarcely as broad as, or but little broader 

 than, the last abdominal segment (fig. 7); lateral carinte.of the pronotum in 

 the female not, or less noticeably, bowed outward behind the point of con- 

 striction (fig. 6); pronotal disk of neither sex longitudinally convex. 

 C. Pronotal disk imicolorous or longitudinally marked with black. 



carlnata, p. 29*:). 

 C. Pronotal disk irregularly mottled with black. 



carinala var. picturat.a, p. 299. 

 B'. Infracercal plates oi the male together broader than the last abdominal seg- 

 ment (fig. 10); lateral carinae of the pronotum in the female distinctly 

 bowed outward behind the point of constriction (fig. 9); pronotal disk of 

 I)Oth sexes, especially the female, longitudinally quite noticeably convex. 



carinata var. convexa, p. 300. 



A^. Last abdominal segment of the male with the outer apical corners rounded; 



infracercal plates long and slender, the portion ]>eyond the last abdominal 



segment nearly three times as long as broad and armed on the inner side near 



the apex with a small sharp tooth ( fig. 11) .morsei, p. 301. 



NEDUBA CARINATA Walker. 



Neduha carmata Walker, Oat. Derm. Salt. Brit. Mus. , II, 1869, p. 251. — Kirby, 



Syn. Cat. Orth., II, 1906, p. 194. 

 Arytropteris steindachneri Hermann, Verli. Zool.-Bot. (ies. Wien, XXIV, 1874, 



p. 204, pi. VI, figs. 98-102. 

 Tropizaspis steindachneri Scudder, Can. Ent., XXVI, 1894, pp. 180, 183; Proc. 



Amer. Acad. Arts Sci., XXXV, 1899, pp. 84, 86; Cat. Orth. V. S., 1900, p. 77.— 



Woodworth, Bull. No. 142, Cal. Exp. Station, 1902, p. b'i.— Kirby, Syn. 



Cat. Orth., II, 1906, p. 194. 



