34 OBTHOPTERA. 



apice biramosa, necnon ramulis incompletes 3 instructa. Pedes testacei, genubus, tibiis et tarsis brunneis. 

 Abdomen supra bninneum, subtus testaceum, late luteo-marginatum. 

 $ . Long. 10 ; elytr. 9-8, pronot. 3, latit. pronot. 3-4 millim. 



Hab. Costa Rica (Bogers). 

 3. Caloblatta tricolor, gauss. (Tab. III. figg. 11-13.) 



(5 . Gracilis, niger. Antennae nigrse, nigro-pilosee, ultra medium annulo albido vel flavido (articulis circiter 8). 

 Os piceum. Pronotum tricolor, lateribus et margine anteriore aurantiis, disco pictura rubra vel rufa in 

 forma litteris V, marginem anticum utrinque attingente, necnon vitta longitudinali nigra, postice dilatata, 

 nonnunquam marginem posteriorem attingente. Margines laterales frequenter latiuscule pellucentes, 

 subvitrei, saltern ad angulum posteriorem. Elytra nigra vel fusco-liliacea, margine costali angustissime 

 albido vel flavido. Alse diaphano-fuscse, apice et campo marginali fuscis ; vena ulnaris furcata et ramum 

 unicum brevissimum ad venam dividentem emittens ; area ulnaris insuper venulis transversis paucis. 

 Pedes basi testacei, genubus, tibiis et tarsis fuscis, spinis luteis, coxis apice et femoribus basi fusco- 

 maculatis. Abdomen nigrum, segmentis ventralibus ultimis macula flava. Cerci nigri, cinereo-pilosi. 



Var. — A. Elytra vix vel haud luteo-marginata. — B. Pronotum : a, vitta nigra longitudinali in margine postico 

 transverse dilatata, ad marginem anticum perducta, macula rufa disci anterius utrinque ad marginem 

 lateralem extensa, margine anteriore maculis 2 flavis, angulis posticis late flavis vel pellucidis ; o, flavum, 

 macula trapezina rufa per fasciam nigram divisa, marginem anteriorem tegente ; hsec in medio maculis 2 

 flavis. 



Long. 10 ; elytr. 10, pronot. 2-8, latit. pronot. 3 millim. 



Hab. Guatemala, Senahu in Vera Paz (Champion); Nicaragua, Chon tales (Belt, 

 Janson). 



The markings of the pronotum are variable, the three colours being more or less 

 extended one over the other. In a general way, the pronotum may be described as 

 yellow, with a large trapezoidal reddish picture on the disc, this being divided by a 

 black band, which is more or less extended anteriorly and more or less dilated poste- 

 riorly, so as to cover sometimes the greatest part of the hind margin. 



[PSEUDISCHNOPTERA, Sauss. 

 Pseudischnoptera, Saussure, Miss. Scient. Mex., Orthopt. p. 66 (1870). 



l. Pseudischnoptera lineata, Oliv. 



Blatta lineata, Oliv. Encycl. iv. p. 317. 17; Palis. Beauv. Ins. d'Amer. p. 228, Orth. t. 2 c. fig. 5 ; 



Serville, Orthopt. p. 98. 22. 

 Ischnoptera lineata, Sauss. Mem. Mex., Blatt. p. 80. 

 Thyrsocera lineata, Brunn. de W. Syst. Blatt. p. 126. 20. 

 Pseudischnoptera lineata, Sauss. Miss. Scient. Mex., Orthopt. p. 67. 1 (<J). 



Hab. South America, Cayenne ; Antilles. 



This species may eventually be found to occur in Central America.] 



ISCHNOPTERA, Burm. 



Ischnoptera, Burmeister, Brunner de W., Saussure. 



Platamodes, Scudder, Bost. Journ. of Nat. Hist. vii. p. 417 (1862) ; Stal (ex parte). 



Antennae setaceae. Elytra et alae abdomen superantia (rare in feminis abbreviata), membranacea. Alarum 

 vena ulnaris ramos ad marginem apicalem, alterosque incompletos ad venam dividentem emittens. 



