124 Mr. Cameron on 



tured. The petiole is more than half the length of the 

 abdomen, and is dilated not far from the base, and clavate 

 at the apex. 



On the whole the specimens agree fairly well with Smith's 

 description, except in what he says about the metanotum, 

 which has " a deep central longitudinal impression ; a semi- 

 circular enclosed space at the base of the metathorax, which 

 is transversely striolated." 



T. intriulens was bred from cells constructed by Para- 

 'pison Tujipes. 



Larra. 



Larra, Fabricius, Ent. Syst. II., 220; Kohl, Verh. z.-b. 

 Ges., Wien 1884, 233 {iion Smith, \N\i\c}a. = Stigmiis). 



Larrada, Smith, Cat. Hyiii. Ins. IV., 274. 



Smith included in Larrada, at least three genera, namely, 

 Larra, Notogonia, and Liris ; probably also Tachysphex. 

 From his description it is impossible to make out to which 

 of these groups the majority of his species belong, as he 

 does not mention the structural details on which the genera 

 mentioned are grounded. In these circumstances I have 

 been compelled to leave over for future examination, by 

 means of Smith's types, several species of Notogonia. At 

 the best the species are exceedingly difficult to discriminate, 

 the points separating the species being usually minute struc- 

 tural details, most of which are not mentioned by Smith 

 at all. 



The following is a list of Larra sensic lat., i.e., of those 

 species which cannot, without an examination of the types, 

 be referred to their precise genus, and which may belong 

 to Larra^ Notogonia, Liris, or Tacky spJiex. 



I. Larra alecto, Smith, Jour. Linn. Soc. Zool. II., 

 103, 6. 

 Hab. Singapore. 



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