﻿14 JouKNAi. Nkw York Ent. Soc. lvol. hi. 



NEW NORTH AMERICAN TETTIGINiE. I. 



By Albert P. Morse, Wellesley, Mass. 



Having received for determination a considerable amount of 

 material in this sub-family from Prof. Otto Lugger, Mr. S. H. 

 Scudder, Mr. Samuel Henshaw, Cornell University, Museum of 

 Comparative Zoology, and a set of the different forms in the col- 

 lection of Prof.Lawrence Bruner, it has seemed worth while to under- 

 take the preparation of a Synopsis of the North American forms of 

 this group, to be illustrated with drawings of the diagnostic charac- 

 ters. Such being the case, I shall be glad to examine all material sent 

 to me, or to obtain material in this group by purchase or otherwise. 

 Pending the publication of such a work it seems advisable to make 

 known by description the following forms. 



Measurements are in millimeters, the extremes alone being 

 given. " Length " refers to the length of the insect from the front 

 of the vertex or head to the tip of the pronotum or winiis, as the 

 case may be. "Pronotum > hind femora" means that the pronotum 

 passes the hind femora, and if the quantity is preceded by a -sign, 

 the pronotum fails to pass by that amount. With these explana- 

 tions the tables of measurements will probably be clear. 



Nomotettix parvus, sp. nov. 



Small. \'erie.\ of head projecting in advance of eyes aboiil 7/3 the length of 

 an eye, the anterior margin obtuse-angulate, its sides nearly straight, rounding 

 shortly into sides of crown, the mid-carina showing from above as a very small, 

 slightly projecting toolh. Mid-carina low on the crown, disappearing opposite the 

 middle, or middle of the posterior half, of the eyes. Profile rounded or round- 

 angulate at top, deeply e.Kcavate opposite eyes, subprotuberant opposite lower 

 border of eyes, the face more retreating than in cris/nliis. Sides of crown sub- 

 parallel, slightly e.xcavate opposite anterior portion of eyes. Mammilla; of occiput 

 scarcely distinct, Pronotum sharply tectiform, the mid-carina lower and less arched 

 longitudinally than in cristatiis : anterior margin of dorsum projecting but little 

 over the head, obtuse-angled, the sides straight or very slightly e.xcavate. Surface 



scabrous. 



Length. I'roii. I'nin. < Hind fein. \\'itij;s < I'ron. Himl feiu. Antenna. 



cT 6.5— 6.8 5-5— 6- -3— -i .0— .5 4- 2. 



9 S.5 7.f' -5 -3 4.2 2. 



This species differs from N. c/isfatiis Harr. in the smaller size ; 



lower carina, less angulate anterior margin, and more scabrous 



surface of the pronotum ; more advanced vertex, with less distinct 



carina in top view ; tnore projecting vertex, more retreating face- 



