ivith descriptions of several exotic species of Ants. 87 



turn. Palpi maxillares et labiales biarticulati ; gracillimi brevis- 



simi, apice seta instructi. 

 Thorax valde angustus, prothorace mediocri ; mesothorace majori. 

 Abdomen magnum fere circulare subdepressum segmentis basalibus 



duobus nodos duos formantibus, segmento proximo maximo. 

 Pedes graciles tibiis 4 posticis ecalcaratis, unguibus tarsorum sim- 



plicibus. 



Species unica. Solenopsis mandibularis , Westw. 

 Tota castaneo-fulva nitida tenuissime punctata, hirta ; oculis, mar- 

 gine antico capitis acuto, mandibulisque nigris ; abdominis apice 

 fusco, mesothorace utrinque in tuberculum conicum elevato ; 

 nodo l mo pedunculi abdominalis elongato, apice elevato-conico, 

 2 ndo brevi subrotundato. 

 Long. corp. lin. 3. 



Habitat in America ^Equinoctiali. D. L. Guilding. 

 In Mus. D. Hope. 



This insect is so closely allied to the Pheidole providens, W. (Atta 

 providens of Col. Sykes, figured in the Transactions of the Entomo- 

 logical Society, vol. i. pi. 13. fig. 5.), that it can only be regarded as 

 a geographical subgenus, distinguished chiefly therefrom by the pe- 

 culiarity of its antennae and the smooth and glossy body. As the 

 former has not hitherto been characterized generically, I take this 

 opportunity of doing so. 



Pheidole, Westw. 



Sub-genus Asiaticum Solenopsidi proximum. 



Caput maximum postice emarginatum antice baud bituberculatum, 

 striolatum obscurum, antice linea utrinque obKqua impressa 

 versus oculos ducta in quibus insident antennae 12-articulatae, 

 graciles breves, articulo 2 ndo sequenti majori, tribus ultimis mag- 

 nis clavam formantibus. Mandibular crassae intus concavae extils 

 eurvatae apice truncato (in fig. supr. cit. erronee dente medio 

 depictae). 



Labrum, maxillae, labium, mentum, palpi, pedes, pedunculus et ab- 

 . domen ut in Solenopside. 



Species unica, Pheidole providens, W. 



Atta providens, Sykes, loc. cit. supr. 



Habitat in India Orientali. D. Sykes. 



The following are descriptions of the individuals of Typhlopone 

 which have fallen under my notice, and which are distinct from those 

 described by Mr. Shuckard : — 



Species typica, Typhlopone fulva. 



Luteo-fulva nitida tenuissime punctata, capite postice nonnihil an- 

 gustiori, margine postico parum emarginato, margine antico ni- 

 gricanti, tuberculis duobus mediis in lineas elevatas postice 

 productis desinentibus et inter has carinas canali impresso 

 postice ad tertiam partem capitis ducto et gradatim terminato ; 

 antennis in fossulis duabus mediocriter impressis, insertis : cas- 

 taneis 1 1 -articulatis articulo l m0 fulvo ; ultimo articulis tribus 



