48 SUPPLEMENT. 



Genus ACANTHODIPHRUS. 



Fcem. Corpus sat gracile. Caput prothoraci aequilatura; frons per- 

 paium obliqua. Oculi rotuncli, prominuli. Palpi maxillares sat longi ; 

 articulus 4us subclavatus, 2o naulto longior. Antenna; graciles, curpore 

 longiores. Prothorax tuberculalus, sellatus, margine antico subdentato 

 oblique unispinoso, margine postico retuso quadrispinoso. Abdomen sub- 

 compressum. Cerci lanceolati, robusti, breves. Vagina perparum arcuata, 

 abdomini tequilonga. Pedes longi, femoribus qualuor posterioribus unise- 

 riatim spinosis, tibiis quatuor pusterioribus genubusque spinosis. Ala? 

 brevissimse. 



Female. Body rather slender. Head as broad as the protborax; 

 sockets of the antennae formiug ridges on the inner side; front very 

 slightly oblique. Eyes round, prominent. Palpi moderately long. Second 

 joint of the maxillary palpi much longer than the first and than the third; 

 fourth subclavate, much longer than the second. Third joint of the labial 

 palpi clavate. Antennae slender, longer than the body. Prothorax tuber- 

 culate, saddle-shaped, with two transverse impressed lines; fore border 

 arched, slightly dentate, with an obliquely ascending spine; hind border 

 retuse, with two spines on each side. Abdomen slightly compressed. Cerci 

 lanceolate, stout, short. Oviduct with an ensiform and very slightly curved 

 sheath, full as long as the abdomen. Legs long; four posterior femora 

 armed with one row of stout spines ; knees and four posterior tibiae armed 

 with spines. Wings rudimentary. 



Nearly allied to Polvancistrus. 



ACANTHODIPHRUS CONSPERSUS. 



Fcem. Fuscus, testaceo eonfertim maculalus et punctatus; antenna 

 teslaceo annulatce. 



Female. Brown, thickly and irregularly speckled with pale testaceous 

 spots, dots and points. Antennas with many pale testaceous rings. Oviduct, 

 legs and fore wings speckled like the body. Length of the body 16 lines. 



a. Chontales, Nicaragua. From Mr. Janson's collection. 



Page 457. 

 Cymatomeea paradoxa. 

 paradoxa, Gent. Arch. Nalurg. xxxv. 214. 

 Zanzibar. 



Mecopoda elongata. 

 Decticus tenebrosus, p. 263. 



Page 459. 

 Mecopoda frontalis. 

 Fcem. Nigricans; caput lave, fastiyio maculaque frontali luteis ; 

 antennae rufescenles ; prothorax punctatus; vagina subarcualus, 

 abdomini aquilonga ; tibia anlicw fulvce ; alee antica obscure 



fuscce. 



