LEPTOMEEINTHOPHOEA.— OMMATOLAMPIS. 289 



This insect was found sparingly among fallen leaves, ferns, &c, along a small stream 

 at the borders of a prairie-tract or open glade in March. 



SYLETEIA, Eehn. 

 Syletria, Eehn, Proc. Acad. Nat. Sci. Philad. 1905, p. 433. 



The present genus bears a very striking resemblance to Abila, Stal, in the general 

 form of its body and wings, but a closer examination shows it to be distinct. The 

 narrow vertex and pronotal characters of Syletria place it in a different section of the 

 subfamily from the one containing Abila. Only a single species is known. 



l. Syletria angulata, Eehn. 



Syletria angulata, Eehn, Proc. Acad. Nat. Sci. Philad. 1905, pp. 433-436, figg. 30, 31 \ 

 Eab. Costa Eica, Carrillo 1 . 



NICAECHUS, Stal. 



Nicarchus, Stal, Syst. Acrid, i. p. 34 (1878) ; Giglio-Tos, Boll. Mus. Zool. Anat. Comp. Torino, 

 xiii. no. 311, p. 47 (1898). 



The genus Nicarchus is based on a single species of short-winged locusts found in 

 Tropical America. It apparently is somewhat related, or at least bears a resemblance, 

 to Lejptomerinthophora, Eehn. 



l. Nicarchus erinaceus, Stal. 



Nicarchus erinaceus, Stal, Syst. Acrid, i. pp. 78, 79 (1878) \ 

 Eab. Panama 1 . 



Not contained in the material studied, and unknown to the present writer. 



OMMATOLAMPIS, Burmeister. 



Ommatulampis, Burm. Handb. Ent. ii. pp. 636, 637 (1838) ; Sauss. Eev. et Mag. Zool. 2 e ser. xi. 

 p. 393 (1859) ; Stal, Bihang till K. Svensk. Vet.-Akad. Handl. v. no. 4, p. 35 (1878) ; Syst. 

 Acrid, i. p. 35 (1878) ; Giglio-Tos, Boll. Mus. Zool. Anat. Comp. Torino, xiii. no. 311, p. 48 

 (1898). 



The genus Ommatolamjpis, as at present restricted, contains apterous or subapterous 

 locusts of medium size. In their distribution these insects are confined to the tropical 

 portions of both North and South America. They are rather obscure in colour, and 

 evidently occur in shady places among the fallen leaves of groves and forests. The 

 species do not appear to be abundant in individuals, or else their habits are such as 

 not to attract the attention of the ordinary collector of insects. 



biol. cente.-amer., Orthopt., Vol. II., September 1908. 2 Pp 



