1904.] NATURAL SCIENCES OF PHILADELPHIA. 529 



CALAMACRIS- n. gen. 



Allied to Orthacris Bolivar,* but differing in the more elongate form, 

 the more prominent fastigium, the presence of tegmina and the com- 

 pressed abdomen. In general appearance it somewhat approaches 

 Dyscolorhinus Saussure^ from Madagascar, but it is separated by a 

 number of characters. 



Form elongate, moderately compressed. Head with the fastigium 

 strongly produced ; eyes elongate-elliptical ; antennae moderately elon- 

 gate, depressed. Pronotum cylindrical. Prosternum erect, conoid, 

 blunt. Interspace between the mesosternal lobes distinctly narrower 

 than long, enlarged anteriorly. Tegmina very short, simple. Abdomen 

 distinctly compressed, carinate above. Cerci simple, tapering. Sub- 

 genital plate moderately produced, compressed and keelec' above 

 apically. Anterior and median limbs rather short; posterior limbs 

 elongate, femora tapering, tibise with a distinct apical spine on each 

 margin. 

 Calamacris clendoni n. sp. 



Types: cJ* and 9. Guadalajara, Jalisco, Mexico. August 25 (9) 

 and September 18 (rj), 1903. (J. F. McClendon.) Coll. Acad. Nat. 

 Sci. Phila. 



6^ . Size rather small ; surface lineato-granulate. Head elongate ; fasti- 

 gium moderately broad, produced in front of the eyes a distance equal 

 to the length of one of them, apex rounded; eye ecjual to the tubercu- 

 lous postocular ridge; antennce subequal in width, apical segment 

 lanceolate, the entire length about equal to that of the head and pro- 

 notum. Pronotum with the median and lateral carinse represented by 

 imperfect ridges of granules ; anterior margin arcuate, posterior margin 

 with a deep median triangular sinuosity; lateral lobes nearly twice as 

 long as the apparent height, anterior^ angle obtuse, inferior margin 

 slightly sinuate, posterior angle rectangulate, but slightly produced 

 posteriorly. Mesonotum almost hidden under the pronotum. Meta- 

 notum simple and resembling an abdominal segment, but shorter. 

 Tegmina not reaching the apex of the metanotum, subequal in width, 

 about four times as long as wide, the apex rounded. Abdomen with 

 a number of longitudinal granulose strigse on the dorsal surface. 

 Supraanal plate acute trigonal, slightly longer than the preceding 

 abdominal segment. Cerci about equal to the subgenital plate in 

 length, compressed, slightly incurved with a distinct apical crook. 



' KalafiT]^ stalk of corn, and uKpir^ grasshopper. 



* Monogr. Pirgomorfinos, p. 93. 



» Abhandl. Senckenb. Naturf. GefelL, XXI, p. G40, taf. XXXVIIl fig. 38. 



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