xxxii. '21] roMOtociCAL \r.\vs 



Ceratinoptera picta Brunner. G, 2^,8 9,4 juv. These specimen? 

 were found in moderate numbers under the bark of decaying logs 

 and were more active than individuals of the other species found 

 there, running about hurriedly when disturbed. Two females have 

 the cotlit'ca extruded, v. ith suture dorsad. Tlv/ usual decided size 

 variation in the organs of flight i^ -,ho-,vn by this series. The 

 males and to a less degree two females, have on the pronotum a 

 pale meso-caudal marking. The other females and all of the 

 juveniles have the pronotum very dark, paling only in a very small 

 area toward the latero-caudal angles. The juveniles are very 

 dark except in that area and on the metanotum, the proximal 

 portion of which is transparent whitish. This gives them a 

 peculiar once-banded facies, particularly noticeable in life. 



Eudromiella bicolorata Hebard. P7, 1$. 



Latiblattella inornata Hebard. P~, 1 9 ; P18, 1 juv. These speci- 

 mens wen; found uVider the palm trees in decaying leaf mould 

 and litter. 



Rhytidometopum megalopterum Hebard. P7, 1 juv. 



Cariblatta imitans Hebard. P7, 1 $ ; Pl8, 1 $,2 $. 



Neoblattella fratercula Hebard. Pl8, 1 juv. in instar preceding 

 maturity. 



Neoblattella impar Hebard. Pl8, 1 $. 



Neoblattella nahua (Saussure and Zehntner). P7, 2 9. 



Neoblattella fraterna (Saussure and Zehntner). P7, 4 $ . 5 9; 

 1'is. 5 $,4 9; G, 1 $. At Paris Field this species was com- 

 mon in decaying leaf mould and litter on bare moist ground 

 under palms, while individuals were occasionally found at night, 

 climbing about in the luxuriant vegetation Specimens were also 

 taken from the dead leaves of Cccroplu sp 



Ischnoptera rufa rufa ( De Geer). FT, 4 3,1 9,2 juv. The few 

 adults in this small scries >hn\\ the interocular width to vary 

 from four-fifths that between the ocelli to slightly greater than 

 that dimension. The immatures Inve the dorsal surface blackish, 

 showing scarcely any trace of a brown tinge, the latter being 

 the usual coloration of immatures of the species. The species 

 was not scarce in decaying Uai mould and litter 01. bare moi-t 

 ground under palms. 



Xestoblatta festae (Griffini). 1'T, 1 f ; G. 1 9. 



EUHYPNORNA new genus. 



This new genus belong to the s;ime category as I [\pnonui. 

 H \pnornoiilcs and CaHiy^nornn. The small species included 

 resemble certain forms of Col . -md, tlmu^li delicate in 



structure, have a ii" ] ruiiclum and tes^mina than 



the genera to which apparc'iitly nearest relationship is shown. 



