38 NORTH AMERICAN BLATTIDAE 



to ten), moderately oblique.^" Wings hyaline; costal veins very 

 feebly clavate distad; intercalated triangle small but evident. 

 Tegmina slightly to very greatly reduced in female. Dorsal surface 

 of male abdomen with sixth segment specialized mesad ; succeed- 

 ing segments, (in majority of species), transversely distinctly con- 

 stricted. Subgenital plate of male fusing and specialized with 

 styles. Subgenital plate of females produced. ^i Cephalic femora 

 with ventro-cephalic margin armed with three to six long, stout 

 spines, succeeded distad by a row of minute, well spaced, piliform 

 spines, terminating in three heavy, elongate, distal spines in increas- 

 ing ratio. Ventro-caudal margin of cephalic femora and ventral 

 margins of median and caudal femora supplied with elongate, mod- 

 erately stout spines. First three tarsal joints supplied distad with 

 small pulvilli,^2 ^Hef ventral surface of fourth joint occupied by a 

 pulvillus. Moderately large arolia present. 



Latiblattella rehni^s new species (Plate I, figures 13 to 17.) 



1905. BlaltcUa adspersicollis Rehn and Hebard, (not Blatta adspersicoUis Stal, 



i860), Proc. Acad. Nat. Sci. Phila., 1905, p. 32. [Miami, Florida.] 

 1912. NeohlatteUa adspersicollis ^^ Rehn and Hebard, {not Blatta adspersicollis Stal, 



i860), Proc. Acad. Nat. Sci. Phila., 1912, p. 239. [Miami and Homestead, 



Florida.] 

 1914. NeoblatteUa detersa Rehn and Hebard, (not Blatta detcrsa Walker, 1868), 



Proc. Acad. Nat. Sci. Phila., 1914, p. 379. [Homestead, Florida.] 

 1914. NeoblatteUa detersa Rehn and Hebard, (not Blatta detersa Walker, 1868), 



Journ. N. Y. Ent. Soc, x.xii, p. 98. [Lakeland and Everglade, Florida.] 

 1914. Ceratinoptera diaphana Davis, (not Blatta diaphana Fabricius, 1792), Journ. 



N. Y. Ent. Soc, xxii. p. 192. [juv.] [Big Pine Key, Florida.] 



The confusion in the present group explains the above mis- 

 identifications." 



50 The discoidal sectors are by no means as strongly oblique as in Supella. 



51 Never very strongly produced mesad, as in females of many species of NeoblatteUa. 



52 In L. dilatata these pulvilli are more extensive, larger than in L. rehni or L. lucifrons. 

 " We take great pleasure in naming this species, of particular interest in its distribu- 

 tion, for our most intimate friend and co-worker, Mr. James A. G. Rehn. 



" We have now before us material of adspersicollis which can be determined with 

 certainty. It is a very large South American insect, genotype of NeoblatteUa, and is 

 closely related to N. nahua, but readily separated from that tropical Noith American 

 and West Indian species, material of which we have also studied, by excellent genitalic 

 characters. 



55 All of the material ui)on which these were based is now before us and is listed below. 



