:31<j Mr. Shuckard's Monograph of the Dorylidae, 



more than one-fourth the length of the organ : ocelli disposed in a 

 triangle, with a space of more than the diameter of one between the 

 anterior one and the posterior pair ■ eyes very prominent ; mandibles 

 elongate, acuminate, slightly curved at the apex. 

 Thorax gibbous in front and at the scutellum : metathorax emarginated, 

 the lateral portion slightly produced : superior wings clouded with a 

 fuscous tinge, their nervures dark brown, the cubital nervure quite 

 itreight to the separation of the submarginal cells, and the recurrent 

 inserted at rather less than half the length of the first submarginal ; 

 the two anterior femora somewhat lanceolate, the four posterior form- 

 ing an elongate triangle. 

 Abdomen cylindrical, the peduncle cup-shaped, very pilose, truncated pos- 

 teriorly, less than the following segment and viewed laterally, slightly 

 angularly produced beneath ; the terminal segment reflected at its 

 extreme apex, and the horizontal plate of the male sexual organ with 

 its sides parallel and its spines elongate and parallel. 



Common in collections. 

 This species is from the Cape, exclusively I believe ; for although 

 Latreille says in the first edition of the ' Dictionnaire d'Hist. Natu- 

 relle,' that it is also found in India, he could not have compared the 

 specimens, as the latter must be one of the species I describe below 

 from that part of the world. Tn his ' Hist. Naturelle,' torn. xiii. he 

 says, that this species ranges from Barbary to the Cape : this also is 

 evidently a mistake, and must refer to some other species that I have 

 below described, which are all very distinct, except perhaps the next 

 only, from the present. My reasons for supposing it to inhabit the 

 vicinity of the Cape exclusively are, because Linne, Fabricius, and 

 Illiger describe theirs from that part, and all these descriptions were 

 made from different collections ; and in every metropolitan collection 

 that I have examined, in all of which this insect is found, it being 

 the most abundant species of all, it is invariably ticketed from the 

 ' Cape,' and never from any other part, and I have seen some hundreds 

 of specimens of it. It is doubtlessly to this species that Mr. Burchell 

 refers in his Travels*, Oct. 15, 1811. 'On the same evening I 

 caught for the first time a large Dorylus, an insect which I after- 

 wards found in the months of November and December within the 

 Cape Colony.' The following insect much resembles the present, 

 but their differences will be pointed out in the observations under it. 



Sp. 3. Dor. affinis, Shuck. Length 10§ lines. 



Expansion 19 lines. 



Helvolus, pilostis ; capite rufo-castaneo, facie plana, petiolo acetabuliformi, 

 segmento secundo multo minor. 

 Reddish testaceous, very pilose ; the head reddish castaneous, excepting 



* Vol. i. p. 376. note. 



