20 BULLETIN OF TIIK 



silicate, the siiles thv^ci\ with reddish, rronotum with tlie disk plrino, the 

 lateral lobes at almost exactly a ri^dit angle to it, the an;4le rounded, the lobes 

 of e(|ual height and length, truncate in front, broadly rounded beneath and 

 behind. Stridulating area of the male tegmina slightly infuscated, marked in 

 the female with a fuscous spot. Fore femora feebly armed beneath with a sin- 

 gle spine, middle femora with three spines. Last dorsal segment of male abdo- 

 men rather deeply and broa<lly emarginate. Anal cerci of male excessively 

 long, arcuate, and nearly as stout at base as the distal extremity of the slender 

 and weak femora, apically birainose, the upper arm the shorter, directed back- 

 ward and upward and somewhat incurveil, compressed, tapering and bluntly 

 pointed, the lower at right angles to the first, directed downward and backward 

 and bent a little inward, subcylindrical, but compressed and terminating in a 

 constricted aduncate subhelicoid process. Ovipositor of female large, arcuate, 

 tapering toward either end, pointed, armed as in A. cornucervi Brunn. 



Length of body, male 13 mm., female 16 mm.; tegmina, male 20 mm., female 

 21.5 mm.; hind femora, male 11.5 mm., female 13.5 mm.; ovipositor, female 

 8 mm.; cerci, male 5.3 nun. 



This species is most nearly allied to A. cornucervi Brunn., to which it was 

 referred by Bruner doubtfully, but it differs in the character of the last ab- 

 dominal segment, and in the cerci, which are not toothed at the base and are 

 even more extravagant in form than in that species ; the fastigium of the 

 vertex is also very different. 



Chatham Island, 1 male, U. S. Fish Conmiission, 1888 ; Wreck Bay, Chatham 

 Island, 1 male, 1 female pupa, June, G. Baur; Indefatigable Island, 1 female, 

 U. S. Fish Commission, 1888. 



Subfamily PSEUDOPHYLLIN^. 



NESCECIA (vn<Tos, olKeoo), gen. nov. 



Allied to Meroncldius ; of stout form. Head not prominently cxscrted ; 

 face broad, smooth, strongly appressed, the margins of the mandibles visilde 

 beyond the sides of the clypeus; fastigium of vertex not extending beyond 

 the auriculate antennal scrobes, triangular, bluntly pointed, tuberculate at 

 base on either side, deeply sulcate and arcuato-declivent; frontal costa be- 

 tween the lower portion of antennal scrobes compressed ovate, separated from 

 the fastigium by a deep arcuation; antenna; twice as long as body, apex of 

 first joint with a rather small intero-posterior spine. Pronotum broadly rounded 

 in front, the middle elevated to a slight tubercle, not at all produced posteri- 

 orly, but truncate; the lateral lobes simple, trapezoidal, the anterior angle sub- 

 rectangular, the lower margin straight and faintly oblique, the hind margin not 

 at all produced ; disk crossed by two very distinct sulci, subequidistant from each 

 other and the margins. Prostermim bispinose; meso.sternum obliquely and 

 broadly sulcate on either side from the centre toward either anterior outer angle, 



