ORTHOPTERA. 
471 
referred to Pachytylus miyratorius 5 but from information since received it 
would appear that all of these were probably Acridium peregrinum. It doep 
not seem to have been noticed in other parts of Europe. 
In Harris’s ^ Correspondence,’ edited by Scudder, are descriptions, from the 
original MS., of fresh specimens of Acrydium (^Calopteniis) femur-ruhruniy De 
Geer (/. c, p. 325), and Locusta (Chloealtt9) curtipe^inis, Harris (1. c.p. 326). 
New genera and species : — 
Tropidacris, Scudd. Proc. Bost. Soc. Nat. Hist. xii. p. 837. Head large, 
compressed ; pronotum tapering moderately ; interno-median vein of tegmina 
furcate ; basal branch of externo-median vein simple, but united by distinct 
cross veins to the intornoimedian ; area between the first and second branches 
of the anal vein of wings in the female not noticeably broad, broken by cross 
veins into spaces not more than half as long again as broad ; in the male 
noticeably broader than the adjoining areas, broken into spaces twice as long 
as broad. Includes T. dux, Drury ; T. rex, Scudd. ; T, latreillei, Perty ; T, 
fahricii, Scudd. { — dvx, Fab. partP); and T. cristata, Linn. 
Titanacris, Scudd. 1. c. p. 337. Head small, compressed j pronotum taper- 
ing considerably ; interno-median vein of tegmina furcate ; basal branch of 
extemo-median vein simple ; area between first and second branches of the 
anal vein of wings of female not noticeably broad, broken by cross veins into 
spaces not more than half as long again as broad ; in the male unusually 
broad, and broken into spaces three times as long as broad. Includes T. cart’- 
nata, Stoll, and T. alhipes, De Geer. 
Lophacris, Scudd. 1. c. p. 337. Head large, full ; pronotum tapering but 
little ; interno-median vein of tegmina simple ; basal branch of externo- 
median vein furcate; area between first and second branches of anal vein 
of wings of both sexes noticeably broader than the adjoining areas, and 
divided into spaces twice as long as broad. Includes L. olfersii, Burm., L. 
velasquezii, Nieto, and L. Tmmholdtii, Scudd. 
Stenoerobylus, Gerstack. (Archiv fiir Naturgesch. xxxv. p. 219). Eyes 
nearly contiguous above; vertex very narrow; median keel of pronotum 
obsolete, side keels absent; process of prosternum subcompressed, nearly 
bilobed at the apex; elytra linear; wings ample. S. cervimis, Gerst. 1. e. 
p. 220, Zanzibar. 
Ixalidium, Gerst. 1. c. p. 220. Allied to Caloptenus, Platypliymata, and 
Pezotettix, but apterous. I. hcematoscelisj Qeiat. 1. c., Zanzibar. 
Pt'oscopia hulhosa, Scudd. 1. c. p. 336, Napo or Maranon; P. sajax, Scudd. 
1. c. Napo or Maranon ; Cephaloccema acuminata, Scudd. 1. c. p. 337, between 
Quito and Napo; Xiphicera 8-maculata, Scudd. 1. c. Napo or Maranon; 
Lophacris humholdtii, Scudd. 1. c. Napo or Maranon ; Tropidacris rex, Scudd. 
1. c. 338, Guayaquil ; Acridium occidentale, Scudd. 1. c. p. 339,tNapo or Ma- 
ranon ; A. lahratum, Scudd. 1. c. Napo or Maranon ; CJwysochraon (?) abhre-- 
viatum, Scudd. 1. c., between Quito and Napo; (Edipoda bivenosa, Scudd. 
1. c., Ecuador. 
Opomala aptera, Scudd. Trans. Amer. Ent. Soc. ii. p. 305, Pennsylvania ; 
Gomphocertts simplex, Scudd. 1. c., Delaware ; (Edipoda carinata, Scudd. /. c, 
p. 306, Iowa; Tettix femorata, Scudd. 1. c. Maryland. 
Pezotettix manca. Smith, Proc. Portland Soc. Nat. Hist. i. pt. ii. p. 149, 
Maine. 
