HuTTON. — On Neiv Zealand Stenopelmatidae. 215 



margin straight or hollowed, the lobes carrying the stylos 

 slightly prominent. Supra-anal plate rounded. Cerci mode- 

 rate. Subgenital plate in the female triangular, with the 

 apex truncated or notched. Ovipositor as in Deinacrida. 



The head of the male is variable in size. In the young 

 the hind tibiae are proportionally much thicker than in the 

 adult. The colourless ante-clypeus is membranous, and can 

 be partly folded inwards, carrying the labrum with it ; this 

 alters much the appearance of the face. 



Localities. — New Zealand, Eastern Australia, and Lord 

 Howe's Island. 



Key to the Species. 



a. Middle tibise without spines above ; hind tibiae, above, with 4 spines in 

 the inner row. 

 b. Hind tibite, above, with 3 spines in the outer row. 

 c. Fore tibise, below, with 4 spines in each 



row . . . . . . ..II. armiger. 



cc. Fore tibise, below, with 3 spines in each 



row . . . . . . . . 27. thoracica. 



bb. Hind tibise, above, with 4 spines in the outer row. 

 c. Fore tibise, below, with 3 spines in each 



row . . . . . . , . H. producta. 



cc. Fore tibise, below, with 8 in outer and 4 in 



inner row . . . . . . .. H. abbreviata. 



ccc. Fore tibise, below, with 4 spines in each row. 



d. Pronotum dark coloured .. .. H. megacepJmla. 



dd. Pronotum pale with dark markings . . H. figurata. 



aa. Middle tibias with a spine above ; hind tibite, above, with 5 spines in 

 the inner row. 

 b. Middle femora with spines below . . . . II. fe^norata. 



bb. Middle femora unarmed below. 



c. Middle femora with a single apical spine H. ricta. 

 cc. Middle femora without any apical spines. 

 d. Pronotum blackish, margined with 



tawny . . . . . . . . H. viaori. 



dd. Pronotum tawny, margined with 



blackish . . . . ,. H. broughi. 



Hemideina megacepliala. Plate XII., figs. 3-3c. 

 Deinacrida megacephala, Buller, Zoologist, 1867, p. 850 ; 

 Trans. N.Z. Inst., vol. iii., p. 36, pi. vh., fig. 2; Hud- 

 son, Man. N.Z. Entomology, pi. 17, fig. 8, and pi. 18, 

 fig. 2. Hemideina capitolina, Walker, Cat. Dermaptera 

 Saltatoria in the British Museum, part i., p. 161 (1869). 

 Deinacrida ligata, Brunner, Monog. d. Stenop. and Gryll. 

 in Verb. k. k.^ Zool. and Bot. Gesellsch., Wien, 1888, p. 24. 

 Head in the adult male very large. Front of epicranium 

 smooth ; frontal ridges curved outwards, rugose ; a deep de- 

 pression under each antenna; post-clypeus transversely 

 wrinkled, separated from the ante-clypeus by a distinct ridge ; 

 labrum ovate ; mandibles very long, not conspicuously keeled 

 in front. Legs : Fore and middle femora without any spines 



