54 THE BLATTIDAE OF PANAMA 



This insect shows the nearest approach to the forms found in the 

 closely related genus Carihlatta Hebard.^^ 



Rio Trinidad, Panama, V, 3 and 9, 1911, (Busck), i cf, i 9. 



Tabernilla, Canal Zone, Pan., V, 4 and VII, 12, 1907, (Busck), 3 9 . 



Paraiso, C. Z., Pan., I, 15 and 16, 191 1, (Busck, Schwarz), 2cf. 



These specimens are appreciably larger than those of the type 

 series, possibly due to development in a more favorable environment. 



Measurements {in millimeters) 



Length of Length of Width of Length of- Width of 



Cj body pronotum pronotum tegmen tegmen 



Rio Trinidad 10.5 2.7 3.6 11. 3 3-3 



Paraiso 9-8 2.6 3.65 11 3-3 



Paraiso 12 2.8 3.8 11. 8 3.7 



9 



Tabernilla (3) 10.5-11.5 2.75-2.8 3-7-3-7 10.8-11.2 3-3-3-2 



Sinistrad within the anal chamber is situated a shaft, directed 

 caudad, which becomes chitinous toward its internal margin and 

 on that margin bears three rather elongate aciculate spines, directed 

 meso-cephalad. This is found to be constant in all the males 

 before us, this including the original series. 



Females of this species are very similar indeed to that sex of N. 

 impar,N.panamaeandprohah\yN.acanthastylata,a\\ here described. 

 They appear to be separable mainly by the tegmina having the 

 cross-veinlets all distad and inconspicuous and by the smaller pro- 

 notum, which probably averages distinctly smaller in this species. 

 Neoblattella acanthastylata^^ new species (Plate III, figures 10 and 11.) 



This interesting species is an annectant type between the aber- 

 rant N . fratercula Hebard, and the forms of the first section of the 

 Impar Group, which show distinctive specialization about the 

 styles of the male subgenital plate. As in fratercula, the tegminal 

 cross-veinlets are only conspicuous in the area of the dextral teg- 

 men, concealed when at rest; in the majority of the species of the 

 Impar Group, the cross-veinlets are conspicuous distad on both 

 tegmina and particularly so in the area mentioned above. In the 

 specialization of the male subgenital plate, the present species 

 shows a very distinctive type. 



^' Sec remarks under Carihlatta imitans on page 52. 



^2 From ttKa^^a = spine, and CTrDXos = piliar (style); in allusion to the remarkable, 

 though minute, spines at the styles of the male subgenital plate. 



