250 MB. R. m'lachlan on a systematic 



species. 



Varying considerably in form ; distinguislied from TJlula by 

 the long antennae and long and narrow wings, which are gene- 

 rally more or less excised at the base of the inner margin ; from 

 Orphne it differs in the non-appendiculate anterior wings. 



1. C. VEUSicoLOR, Burmeister. (Ascal. versicolor, Burm. Handb. ii. 

 p. 1004. — 0. leptocerus, Ramb. N^vrop. p. 361. — C. nematocerus, 

 Ramb, I, c.) Antennae flavae, pilis verticillatis longis instructae ; api- 

 cibus articulorum nigris ; clava valde elongata, supra flava, infra fus- 

 cescente. Frons dense fuseo-villosus. Thorax fuscus, supra niaculis 

 nonnuUis lineisque transversis, infra linea utrinque, fluvis ornatus. 

 Pedes pallide flavi ; genibus, tibiisquc extus (anticis fere omuino) 

 fuscis; tarsis piceo-nigris. Abdomen fuscum, flavo-varium. Alae 

 vitreae ; venis venulisque nigris ; pterostigmate nigro (interdum pal- 

 lidiore, vix flavido) : anticae in medio paullo dilatato ; angulo axillari 

 obsoleto : posticse ante basin profunde (in <? profundius) excisae, ad 

 basin obtuse dilatatas. Long. corp. ll-13"'j exp. alar. 29-31'". 



Apparently common throughout Brazil, especially in the south- 

 ern districts. 



2. C. SUBRIPIENS, Walker. (Ascal. subripienSjW^aZi. Cat. Brit.Mus. 

 Neurop. p. 443.) Antennae alis aequales, nigro-fuscae, pilis verticil- 

 latis sparsis basin versus fuscis instructae ; clava perelongata, supra 

 flava. Frons niger, flavo-marginatus, supra fulvo-hirsutus. Occiput 

 fuscum, flavido-lineatum. Thorax niger, maculis flavis ornatus. 

 Pedes pallide albo-flavidi ; fenioribus tibiisque extus fuscescentibus ; 

 tarsis fuscis. Alae fere ut in C. versicolori, sed paullo latiores ; anti- 

 carum margo interior basin versus longe excisus, angulo axillari 

 prominente : posticarum parte dilatata ad basin parva. Long. corp. 

 12'"; exp. alar, antic. 29'", postie. 26'". 



Hab. Venezuela. 



Allied to G. versicolor, but certainly distinct. 



3. C. DELiCATULUS, nov. sp. Antennae alis longiores, nigraj, vix ad 

 basin pilis verticillatis instructae ; clava nigra, supra infraque in medio 

 flava. Frons niger, supra fusco-villosus. Occiput piceum. Thorax 

 supra fuscus, in medio flavus, infra albidus. Pedes flavidi, fusco 

 varii ; tarsis nigris. Abdomen fuscum, supra utrinque strigis brevibus 

 ochraceo-marginatis, ornatum. Alae elongatae, angustatae, vitreae ; 

 venis venulis pterostigmateque nigris, hoc magno : anticarum mar- 

 gine interiore basin versus j)aullo convexo, angulo axillari subacute : 

 posticae anticis angustiores, subacutae, ad apicem fumoso-nebulosae ; 

 margine interiore basin versus leviter excise. Long. corp. 11'"; exp. 

 alar, antic. 27'", postie. 24'". 



Hab. Santarem {Bates), 



