12 CATALOGUE OF 



2. Petasodes beflexa. 



Mouffet, Tns. 129— Blatta reflexa, Thunb. Mem. Acad. Sci. St. Petersh. x. 

 278— Blatta Mouffeti, Kirby, Linn. Trans, xii. 2. Isis, 1824, 127— 

 Blabera reflexa, Serv. Hint. Orlh. 82, pi. 2, f. 2— Monacboda Mouffeti, 

 Burnt. Handh. Enl. ii. 614 — Petasodes reflexa, Sams. Hist. Nat. Mtx. 

 iv. 261. 



n. Rio Janeiro. Presented by J. Gray, Esq. 

 b. Tcjuca. Presented by the Rev. H. Clark. 



Brazil. 

 d. ? 



Petasodes sp. 



a, b. Para. From Mr. Wallace's collection. 



Genus 5. LIBISOCA. 



Mas. Corpus longi-ovatum, opacum, subconvexum, subliliter tuber- 

 culatum, subtus fere glabrum. Oculi late disjimcti. Palporum articulus 

 2iis clavatus; 3us linearis, apice rotundatus, 2o paullo longior. Antennte 

 setaceae, subsetulosae, corporis dimidio non longiores. Thorax fere semi- 

 circularis, caput paullo superans, lateribus vix reflexis, margine postico 

 lecto. Metalhoracis margo posticus subangulatus, utrinque subsinuatus. 

 Abdominis segmenta angulis posticis subelongatis; lamina subanalis incisa. 

 Pedes robusti, breviusculi. 



Male. Body elongate-oval, dull, slightly convex, minutely tuberculate. 

 Head flat in front, shining, nearly smooth. Eyes wide apart. Second joint 

 of the palpi clavate; third linear, rounded at the tip, a little longer than 

 the second. Antennse setaceous, very minutely setulose, not more than half 

 the length of the body. Prolhorax nearly semicircular, sligbtly arched ia 

 front, extending a little beyond the head, hardly reflexed on each side; 

 hind border straight ; an indistinct lyre-shaped mark in the disk. Meso- 

 thorax much widened hindward on each side. Hind border of the meta- 

 thorax slightly angular in the middle, slightly sinuated on each side, 

 obliquely hiding the first and second abdominal segments on each side. 

 Pectus and rmder side of the abdomen almost smooth. Hind angles of 

 the abdominal segments sligbtly elongated; subanal lamina notched in the 

 middle. Cerci short, stout. Legs stout, rather short; tibiae armed with 

 strung spines ; first and fifth joints of the tarsi long, grooved beneath ; the 

 rudimentary arolia between the ungues just visible. Foie femora with 

 three spines beneath. 



The tuberculate body sufliciently distinguishes it from the other genera 

 of Blaberidce. 



1. LiBISOCA >EQUALIS. 



Mas. Piceo-nigra; caput apud os testaceo fa.ieiatum ; antennee ferru- 

 ginea, basi nignc ; prolhorax margine anlico lattribusque ferruyineis ; 

 tarsi sublus fulvi. 



Male. Piceous-black. Head with a testaceous band near the mouth. 

 AntennEB ferruginous, black towards the base. Prolhorax bordered with 



