LOCUSTID^E. 281 



rather slender; hind femora with a few minute spines beneath ; hind knees 

 with a spur beneath ; four anterior tibiae with six minute spines on each 

 side beneath ; hind tibiae with numerous minute spines in four rows. 

 Fore winjis coriaceous, rather longer than the hind wings ; transverse veins 

 very numerous and irregular; interior border dilated at the base; tym- 

 panum small. Hind wings ample. 



This genus may be distinguished from Decticm by the slender keel 

 between the antennae, and by the rounded prothorax without lateral 

 keels. 



1. LANCIANA ALBIDICORNIS. 



Mas. Testaceo-cinerea ; antennae albidce ; abdomen fuscum, subtus 

 fulvum ; femora postica nigro univittuta ; tibia posticce basi albidae ; 

 alee anticce linea discoidali e punctis fuscis ; alee postica diaptiance, 

 pallido venosce. 



Male. Testaceous-cinereous. Eyes lurid. Mandibles with brown 

 tips. Antennae whitish. Mesothorax, metathorax and abdomen brown, 

 the latter tawny beneath. Hind femora with a black stripe on the outer 

 side; hind libia3 whitish at the base. Fore wings with a line of brown 

 points in the disk. Hind wings pellucid ; veins pale. Length of the body 

 9 lines; expansion of the fore wings 20 lines. 



a. Australia. From Mr. Darnel's collection. 



Genus 65. PIURA. 



Fcem. Corpus gracile, glabrum, nitens. Caput spina brevi valida 

 porrecta carinata obtusa inter antennas instructum; frons erecta, longius- 

 cula; labrum sat longum. Oculi fere rotundi, valde globosi. Palpi 

 maxillares longiusculi; articulus 3us 4o paullo brevior; 5us 3o paullo 

 longior. Antennae longae, graciles. Prothorax longiusculus, supra planus, 

 transverse quadrisulcatus, lateribus valde rotundatis, margine postico recto. 

 Abdomen compressum, prothorace plus duplo longius. Oviductus vix 

 arcuatus, abdomine brevior. Pedes longi, graciles; femora postica biseria- 

 tira spinulosa, basi incrassata; tibia? quatuor anteriores biseriatim sex- 

 spinosai; tibiae posticae quadriseriatim spinulosae. Ala? anticae longae, 

 coriaceae, sat angustae, confertissime reticulatae. Alae posticae amplae, 

 paullo breviores. 



Female. Body slender, smooth, shining. Head with a short, stout, 

 ponect, keeled, obtuse spine between ihe antennae; front erect, rather 

 long; labrum elongate. Eyes nearly round, very prominent. Palpi 

 pubescent; apical joint clavate, truncated at the tip. Maxillary palpi 

 rather long; fourth joint a little longer than the third ; fifth a little shorter 

 than the fourth. Antennae long, slender. Prothorax elongate, linear 

 above, with four transverse furrows, of which the first and third are angular; 

 the flat dorsal part much wider towards the hind border, which is straight; 

 deflexed sides much rounded. Abdomen compressed, more than twice the 

 length of the proihorax. Oviduct hardly curved, rather shorter than the 

 abdomen. Legs slender, long; hind femora iucrassated towards the base, 

 with two rows of minute teeth beneath; four anterior tibiae with six long 

 spines on each side; these spines from the first pair to the last successively 



