BLATTID.E PRESERVED IN AMBER, FR03I PRUSSIA. 351 



angles strongly produced backwards. Surface of tlie thoracic tergites 

 punctate, of the anterior abdominal tergites striate, of the posterior abdo- 

 minal tergites reticulate; the spaces between these points, strise, and articula- 

 tions silvery. Angle of the posterior abdominal tergites strongly produced 

 backwards. Supra-anal lamina triangular. Cerci robust, 11-jointed. Sub- 

 genital lamina semi-orbicular, ample^ posterior margin notched in the middle. 

 Front femora with a complete row of short strong spines on the anterior 

 margin beneath, other femora moderately armed^ genicular spines lono-. 

 Tibise stout, strongly armed, and with a sericeous pile. Tarsi with large 

 pulvilli, metatarsi unarmed beneath, arolia large. 



Length 21mm. ; pronotum 5"8 mm. x 10mm.; mesonotum 3mm. x ll'Omm. 



Subfam. Blattin^e. 



Pbriplaneta succinica, sp. n. 



$ . No. oJ^go. 



Rufo-castaneous. Antennaj fuscous at base, becoming rufous towards 

 apex. Pronotum trapezoidal, not covering vertex of head, sides deflexed, 

 posteriorly obtusely rounded. Tegmina semicorneous, extending to the ante- 

 penultimate abdominal tergite ; 10 costals, the last 4 being ramose ; discoidal 

 sectors multiramose, some of the rami extending to the apex of the tegmen 

 and also on to apex of marginal field; anal vein impressed, strongly bowed; 

 surface of tegmina, especially in discoidal and anal fields, densely reticulated. 

 Supra-anal lamina trigonal, sub-cucullate^ apex emarginate. Sub-genital 

 valves of the form typical of this subfamily. Cerci rather short, blunt, with 

 8 visible joints. Front femora with a complete row of strong spines on 

 anterior margin beneath, only 1 on the posterior margin ; mid- and hind- 

 femora with 5 spines on both margins beneath, those on the posterior maro-in 

 the longer. Genicular spines strong. Posterior metatarsus equal in lenoth 

 to the succeeding joints ; pulvilli minute, apical. 



Total length 18 mm. ; length of tegmina 12 mm. 



This is a beautifully preserved specimen, and there can be no doubt as to 

 the correct systematic position of the species. 



Subfam. CoRYDiiN^E. 



Polyphaga fossilis, sp. n. (PI. 48. fig. 21.) 



(J . No. 34§9 (larva). 



Ovate. Rufous with recumbent pubescence. Vertex of head not covered 

 by pronotum. Eyes wide apart, not markedly reduced in size. Antennee 

 short, moniliform in apical half ; second and third joints sub-equal, twice as 

 long as fourth joint. Pronotum anteriorly arcuate, posteriorly truncate, sides 

 strongly deflexed. Posterior angles of meso- and metanoturn slightly produced 



linn. JOURN, — ZOOLOGY, VOL. XXX. 28 



