NO. 1124. REriSIOX OF THE MELAXOPLI SCUDDER. 141 



the submedian ridges of the supraanal plate, and projecting over it by 

 a little more than the length of the last dorsal segment; cerei bullate, 

 strongly incurved, exteriorly flattened but a little convex longitudi- 

 nally, at first enlarging and swelling, the inferior margin bent roundly 

 at a right angle in the middle (before which the margin itself is trans- 

 versely abruptly rectangulate, beyond it acutangulate, so that the lower 

 face is sulcate), then suddenly contracted, with the upper portion pro- 

 duced as a short, tapering, bluntly pointed, compressed finger, which 

 does not reach the tip of the supraanal plate; subgenital plate very 

 much broader than long, subconical, the apical margin abruptly and 

 greatly elevated, thickened and well rounded. 



Length of body, male, 17 mm., female, 22.5 mm.; antennae, male, 7 

 mm., female, 7.25 mm.; tegmina, male, 6 mm., female, 7.25 mm.; hind 

 femora, male, 10.5 mm., female, 13.5 mm. 



Thirty-two males, 42 females. Montelovez, Ooahuila, Mexico, Sep- 

 tember 20, E. Palmer; Sierra Kola, Tamaulipas, Mexico, December 

 3-6, E. Palmer; Sierra de San Miguelito, and mountains twelve leagues 

 east of San Luis Potosi, Mexico, E. Palmer; San Luis Potosi, Mexico, 

 October, E. Palmer, E. Barroeta; Bledos, San Luis Potosi, Mexico, 

 October 1, E. Palmer; Zacatecas, Mexico, November (L. Bruner) ; Aguas 

 Calientes, Mexico, November (L. Bruner). 



2. MELANOPLUS LAKINUS. 

 (Plate X, fig. 2.) 



Pezolettix lakiniis SCUDDER!, Proc. Bost. Soc. Nat. Hist., XX (1879), pp. 79-80; 

 Cent. Ortli. (1879), pp. 68-69. BRUNER, Rep. U. S. Ent. Comm., Ill (1883), 

 p. 59; Bull. Washb. Coll., I (1885), p. 136; Publ. Nebr. Acad. Sc., Ill (1893), 

 p. 27. 



Vertex of the head gently tumid, scarcely elevated above the pro- 

 notum, the interspace between the eyes half as broad again as the first 

 autennal joint; fastigium broad, shallow, flat, expanding in front, the 

 bounding walls low and thick ; frontal costa moderate, slightly expanded 

 at the ocellus, sulcate almost throughout, only the summit flat, about 

 as broad as the interspace between the eyes; eyes rather small, not 

 prominent, about as long as the infraocular portion of the genae; anten- 

 nae about three-fourths (male) or about two-thirds (female) as long as 

 the hind femora. Pronotum short, especially in the female, but simple, 

 expanding slightly posteriorly, either half of the lateral lobes of the 

 prozona slightly and independently tumid in the male; front border 

 truncate, hind border very little angulated and rounded; median carina 

 slight but distinct, equal; lateral carinae well marked, forming a nearly 

 square shoulder, especially on the hinder portion of the prozona; pro- 

 zona longitudinal (male) or subquadrate (female), slightly (male) or 

 scarcely (female) longer than the finely punctate metazona. Prosternal 

 spine moderately long, a little shorter in the female than in the male, 



