TETTIGIDEA. 17 



4. Tettigidea plagiata, sp. n. 



Antennae filiform, very slender. Eyes scarcely subprominent. Vertex and crown distinctly convex, faintly 

 excavated at the sides ; vertex advanced, snbangulate, a little wider than one of the eyes, the sides parallel, 

 the mid-carina small, little produced backward. Facial costa narrow throughout, widest below. Pronotum 

 convex-tectiform, arched longitudinally, the surface granulate, with faint, short, irregular rugulae ; the 

 anterior margin advanced one-fourth its width, rounded angulate ; mid-carina prominent, acute ; lateral 

 carina? obsolete anteriorly, distinct behind the principal sulcus ; scapular area reduced to a mere line ; 

 hind process long-subulate, passing posterior femora 1*8 millim., exceeded 1'4 millim. by the wings ; 

 lateral lobes with the upper sinus rather deeper than usual. Elytra large, long-elliptical, with an oblique 

 subapical pale bar. Femora slender, the posterior pair with a narrow pale streak bounding the lower 

 margin of the external pagina internally. 



Total length, c? , 13*5 : pronotum, S , 11*8 ; post, fern., c? , 6*4 ; antennae, $ , 3*5 millim. 



Hah. Mexico, Cuernavaca in Morelos (H. H. Smith). 



One male. I have also seen two females, one from Cuernavaca, the other from 

 Chilpancingo (H. H. Smith), which perhaps belong to this species, though they approach 

 T. nicaraguce rather closely, differing from it in being slightly smaller, with more arched 

 pronotum and slenderer hind femora. 



5. Tettigidea parvula, sp. n. 



Autennae slender, filiform. Vertex narrow, equal to, or barely as wide as, one of 

 the eyes ; mid-carina prominent. Facial costa prominent, narrowly sulcate, widest 

 below. Pronotum punctate or smoothly granulate, with a few indistinct longi- 

 tudinal rugulae on the shoulders, the humero-apical carinulae distinct, bounding a 

 well-marked scapular area, which is widest at the humeral angles ; hind process 

 subulate. Elytra widest subapically, obliquely truncate at the apex, with a sub- 

 apical oblique pale bar. Wings fully developed. Hind femora robust, margins of 

 the apex but little concave. 



Total length, <J 10*5, $ 12-5: pronotum, <y 8-5, $ 10; post, fem., 6 5, $ 6; 

 antennae, d 3-5, $ 3-5 millim. 



Hab. Mexico, Cuernavaca in Morelos (H. H. Smith). 



Two males and two females. This is the smallest and most slender species of 

 Tettigidea known to me. It resembles T. plagiata in the general form of the body, 

 but the hind femora are proportionally stouter, the facial costa is more prominent, the 

 crown less elevated, the vertex narrower, and the size much less. It may possibly 

 prove to be referable to T. guatemalteca, Bolivar. 



6. Tettigidea tecta, sp. n. 



Vertex horizontal, advanced before the eyes a distance equal to one-fourth its width, angulate, with sub- 

 prominent mid-carina, which extends well backward; the lateral margins converging backward to its 

 narrowest part just in front of the coronal lobes, where its width is one and a half times that of one of 

 the eyes. Facial costa with upper and lower halves nearly equal in width. Pronotum distinctly tectiform, 

 especially in the female ; the anterior margin strongly advanced, one-third its width or a little more, 

 parallel to the sides of the vertex, angulate at the apex ; surface smoothly granulate ; mid- and lateral 

 carinse prominent, with two to four irregular additional rugulae ; scapular area present, narrow ; posterior 

 sinus of the lateral lobes shallow ; hind process abbreviated. Elytra rather small, long-elliptic, unmarked. 



biol. centk.-amer., Orthopt., Vol. II., November 1901. Dd 



