230 APPENDIX F. ORTHOPTEROUS INSECTS. 



not apparent upon a first glance, affords other differences not less im- 

 portant, between Anabrus and Phalangopsis, when studied compara- 

 tively. 



2. Anabrus haldemanii, Girard. 



Zoology, PI. XV, figs. 5-8. 



Spec. char. — Antennae long and filiform, reaching posteriorly the 

 base of the ovipositor; pronotum short, broad; femora smooth. Yellow- 

 ish ; feet and ovipositor reddish purple. Posterior margin of pronotum 

 black, with two parallel black bands on the posterior third of its length. 



Description. — The abdomen above exhibits ten segments or articula- 

 tions ; the anterior or basal one being, as stated above, covered by the 

 posterior prolongation of the pronotum. Beneath there are seven sub- 

 quadrangular plates, situated opposite to the seven middle upper seg- 

 ments. The posterior segments enclose another piece bearing two spine- 

 like abdominal appendages — one on each side. The ovipositor is as 

 long as the abdomen, and entirely smooth. The base of the antennae 

 is situated above the eyes, and inserted upon an angular movable piece. 

 The joints composing these organs are very short, and provided with 

 minute setae. The tibiae are provided with four rows of spines, two 

 anterior and two posterior ; the internal posterior row being the stoutest. 

 The posterior rows are more densely set with spines, whilst the latter 

 are scattered and alternate with each other in the anterior rows. The 

 first and cordate joint of the tarsi is the longest; the second is the 

 shortest; and from the middle of the third, a fourth slender and long 

 joint arises, slightly convex above, and terminating in two spines or claws 

 curved inwards and outwards. 



The ground-color above and below is yellowish ; the antennae, limbs, 

 and ovipositor are of a reddish purple. The posterior margin of the 

 pronotum is black. Two parallel black vittae, enclosing a narrow yellow 

 one, are observed on each side of the dorsal line, upon the posterior 

 third of the pronotum. The posterior portion of the upper abdominal 

 segments is occasionally of a deep-brown hue. 



This species differs from Anabrus simplex, Hald., by a proportionally 

 much shorter pronotum. 



One specimen, caught June 27th, is recorded as "green and white." 



Plate XV, fig. 5, represents Anabrus haldemanii in a profile view and 

 of the size of life. 



Fig. 6 is a front view of the head. 



Fig. *7, a tarsus from above. 



Fig. 8, a tarsus from below. 



