NO. 1336. WALKINGSTICKS OF THE UNITED STATES— CAUDELL. 865 



The species occurring in the United States fall into four su])faniilics, 

 'separated as follows. 



'a. Antennye not more than one-half as long as the anterior femora ("i.rnMxix.K,. 



aa. Antenna' distinctly longer than the anterior femora. 



/(. Mesothorax never less than four times as long as the jjrothorax, generally more; 

 tibije not furnished at the apex V>eneath with a sunken areola.. BACUNriLiX/E. 

 hh. Mesothorax never more than three times as long as the prothorax, generally 

 less; tibia^ furnished at apex beneath with a sunken areola. 



c. Coxas visible from above; tarsi five jointed Anisomokchix.k. 



cc. Coxfe invisible from above; tarsi three jointed Timemin.k. 



Svil^lainily CLia-'TJj\I]VI>J"^lH:. 



The insects representing- this subfamily in the United States are 

 very slender wingless walkingsticks with antenna' much shorter than 

 the anterior femora in lioth sexes. The legs are slender and unarmed 

 and the tibiae are carinate beneath to the apex. The median segment 

 is short and inconspicuous. Pronotum short as in Bacioiculmm. 

 Cerci moderate, incurved in the male and straight in the female. 



We have but one genus, which is here characterized as new. 



PARABACILLUS, new genus. 



Bdril/iis ScuDDKK (not Latreille), Psyche, VI, 1S93, p. :572. 



Antenna? less than one-half as long^is the anterior femora, composed 

 of six or seven segments in the male and prol)ably about that number 

 in the female, but there, as also sometimes in the male, the segments 

 are so closely connate as to be inseparable, except the first and second, 

 which are very distinct." Head subpyriform, horizontal. Eyes small, 

 round. Thorax with the pronotum about one-tifth as long as the 

 mesonotum. Legs, smooth, luiarmed, long and slender. Cerci as in 

 Diaphenmie/'a. 



Dr. Scudder considered the species of this genus to belong to the 

 subfamily Bacillina- and placed them in the old world genus lUdllm. 

 But the absence of an areola at the apex of the tibi» below refers them 

 to the subfamilv Clitumnina?. In many particulars the genus seems 

 closely allied to' the genus ParacUtvinnnsoi Brunner von Wattenwye. 

 We have a single species of the genus. 



PARABACILLUS COLORADUS Scudder. 



Plate LVII, tig. 1 ; Plate I.VIIl, hg. 1. 

 BarUlux coloradnx Sciddek, Psy.^he, VI, 18!»^, P- -7^; I'''-''- I'^^venp. A,.id. S.-i., 



IX, 1902, p. 21, pi. I, fig. 4. 

 Bacillus carinatus Scuddkr, Psyche, VI, 1893, p. 372. 



1 



aBadllm hispanicus Bolivar, belongs to this genus, but the antenna- are con.posecl 

 of sixteen distinct segments. The Barillvs pclmeri of the author, recently descnhu. 

 from Mexico, is also a member of this genus. 



