554 PnorEEDINGS of the national MUSEmf. vm.. xxvn. 



BLATTA ORIENTALIS Linnaeus. 



1758. [Blnfta'] nricntaUs LiNN^us, Syst. Nat., 10th ed., p. 424; "America, Oriente: 

 iinpriiniH in farina, Pane, etc., hodie in Russife adjai-entibus regionilins fre- 

 (juens: incepit nnperis teniporibus Holmipp, iiti dudum in Finlandia." 



Three immature males: Yokohama, Japan. (Rev. H. Loomis.) 



[A. N. Caudell.] Kioto, Japan. (Y. Hirase.) [A. N. S. Phila.] 



BLATTA SENECTA, new species. 



Type. — Female: Zulu Mission, South Africa. [A. N. S. Phila.] 

 Closely allif^d to 7?. antlirac'iiia (Brancsik) " from the Zamliesi region, 

 but diffei'ing' in the smaller size, the truncate sixth dorsal abdominal 

 segment, and the luidivided supra-anal plate. 



Size medium: form suhovate; dorsal surface, except the anterior 

 and lateral margins of the pronotum punctate, becoming rugose and 

 subcoriaceous in character on the abdomen. Head projecting beyond 

 the pronotum, the anterior border arcuate; interspace between the 

 eyes one and two-thirds of that between the ocelli; ocelli rather small, 

 well removed from the ej^es; antenna? almost equaling the ])ody in 

 length, second and third segments subequal in length; eyes rather 

 elongate, irregularly renif orm, the greatest depth anterior. Pronotum 

 broader than long; the anterior and lateral margins rather evenl}*^ 

 arcuate, a slight truncation anteriorly; posterior margin truncate, 

 lateral angles rather narrowly rounded; the pronotum arcuate trans- 

 versel3\ Mesonotum and metanotum with the posterior margins 

 broadly and evenlj" emarginate. Tegmina very slighth" exceeding the 

 mesonotum in length, costal margin arcuate, apex -subtruncate. 

 Abdomen with the posterior margins of the dorsal aspect of the six 

 basal segments truncate or subtruncate; seventh segment with the 

 margin sinuate, the slightly produced median portion being very 

 broadly and very shallowly emarginate. Supra-anal plate produced, 

 subtriangular, tectate; apex broadly rounded. Cerci subfusiform, 

 depressed greatest width proximal, apex acuminate. Subgenital 

 plates together rostrate, triangular, the apical angles acute. Anterior 

 femora with twelve spines on the median and apical portions of the 

 anterior margin, the median and extreme apical ones largest, posterior 

 margin with two spines on the apical portion, the terminal one very 

 large, no genicular spine present; tibit« about three-fourths the length 

 of the femora; tarsi slightly exceeding the tibi« in length, metatarsi 

 slightl}" exceeding the terminal tarsal joint in length, pulvilli extend- 

 ing two-thirds the way to the base of the metatarsi. Median femora 

 with six spines on the median and distal portions of the anterior mar- 

 gin, posterior margin with five evenly distributed spines, genicular 



''' Jahresheft des Natnrwissenschaftlichen Vereines des Trencsener Comitates, 

 XVII-XVIII, p. 244, pi. Yii, fig. 2. 



