CEUTHOPHILUS. 299 



bb. Femora postica apice haud graeilia, subtus 3 in carina externa spinis inaequalibus armata : 

 c. spina media majore angulatim curvata, necnon spinis tribus vel quatuor minoribus 

 armata. Tibiae posticse parum curvatse, subtus totse muticse. — [2. lapidicola, Burm.] 

 cc. spinis 3-4 grandibus armata nonnullisque minoribus. Tibiae posticse valde curvatse, 

 subtus, apicem versus tuberculis 4, spinuligeris instructa. (Calcaria metatarso 

 dimidio vix longiora.) — [3. nodulosus, Br.] 

 aa. Tibiae posticae rectse, femora quarta parte superantes. 

 b. Femora postica subtus in carina externa spinulosa : 



c. spinis majoribus 8, in carina interna spinulis ultra 20 armata. — [4. agassizi, Scudd.] 

 cc. Femora postica subtus in carina externa spinulis minimis confertis armata. — [5. stygius, 

 Scudd.] 

 bb. Femora postica subtus in carina interna apice spinulosa, in carina externa mutica.— -6. 

 aztecus, sp. n. 



[1. Ceuthophilus gracilipes, Hald. 



Phalangopsis gracilipes, Hald. Proc. Amer. Assoc. Adv. Sci. ii. p. 346 (1850). 

 Ceuthophilus gracilipes, Scudd. Bost. Journ. Nat. Hist. vii. p. 430 (1862) ; Brunn. v. W. Monogr. 

 der Stenopelm. und Gryllacr. p. 63. 1. 



Hab. Noeth America, Illinois, New York, New Jersey, Georgia, Colorado.] 



[2. Ceuthophilus lapidicola, Burm. 



Phalangopsis lapidicola, Burm. Handb. der Ent. ii. p. 723 (1839). 



Ceuthophilus lapidicolus, Scudd. Bost. Journ. Nat. Hist. vii. p. 435. 



Ceuthophilus lapidicola, Brunn. v. W. Monogr. der Stenopelm. und Gryllacr. p. 63. 3. 



Hab. Noeth Ameeica, Georgia.] 



[3. Ceuthophilus noduloSUS, Brunn. 

 Ceuthophilus nodulosus, Brunn. v. W. Monogr. der Stenopelm. und Gryllacr. p. 64. 5, t. 7. fig. 33 a. 



Hab. Noeth Ameeica, Dallas in Texas. 

 Certain to be found in North Mexico.] 



[4. Ceuthophilus agassizi, Scudd. 



Rhaphidophora agassizii, Scudd. Proc. Bost. Soc. Nat. Hist. viii. p. 11 (1861). 

 Ceuthophilus agassizii, Scudd. Bost. Journ. Nat. Hist. vii. p. 439 (1862) ; Brunn. v. W. Monogr. 

 der Stenopelm. und Gryllacr. p. 65. 7. 



Hab. Noeth Ameeica, Washington territory, Georgia.] 



[5. Ceuthophilus stygius, Scudd. 



Rhaphidophora stygia, Scudd. Proc. Bost. Soc. Nat. Hist. viii. p. 4 (1861). 



Ceuthophilus sfygius, Scudd. Bost. Journ. Nat. Hist. vii. p. 438 (1862) ; Brunn. v. W. Monogr. 

 der Stenopelm. und Gryllacr. p. 65. 8. 

 Hab. Noeth Ameeica, Nebraska, Kentucky, Texas, &c. 



Certain to be found in North Mexico.] 2 oq 2 



