41 ME. SMITH'S CATALOGUE OF HYMEN0PTEB0US INSECTS 



joint of the tarsi ferruginous. Abdomen shining, with an obscure 

 violet tinge in certain lights ; the apical margins of the second, third 

 and fourth segments with a fascia of bright green or blue-green ; be- 

 neath, thickly and coarsely punctured. 

 Hab. Malacca, India. 



3. Nomia elegans. N. nigra ; capite thoraceque punctatis subopacis ; 

 alis hyalinis ; pedibus subferrugineis ; abdomine fasciis caeruleo-viridi- 

 bus pulchriter omatus. 



Female. Length 5 lines. Black : the head closely and finely punc- 

 tured, the clypeus coarsely so, with a central longitudinal depression, 

 subtuberculate on each side ; the labrum and mandibles ferruginous, 

 the latter black at their tips ; the scape in front, and the apical joints 

 of the flagellum beneath, yellowish. Thorax : shining, with very deli- 

 cate shallow punctures ; a transverse band of pale pubescence at the 

 apical margin of the scutellum ; the base of the metathorax with a deep 

 depression which is crossed by a series of short striae ; the sides of 

 the metathorax with a dense pale fulvous pubescence ; the legs pale 

 rufo-testaceous, and covered with short glittering pale pubescence; 

 wings subhyaline and iridescent ; the nervures testaceous, the costal 

 nervure and the stigma dark fuscous ; the apex of the anterior wings 

 slightly clouded. Abdomen smooth and shining, the apical margins 

 of the segments with narrow, vivid blue-green fasciae. 



Hab. Malacca. 



Most closely resembling the " Nomia crassipes $ ," but that insect has 

 the abdomen punctured, and the fasciae broad, particularly at the 

 apex of the abdomen. 



Subfam. Andbenoides. 



Gen. Ctenoplectea, Smith. 



Head transverse : antenrue inserted in the middle of the face, short, not 

 reaching to the middle of the thorax ; the basal joint of the flagellum 

 not narrowed at the base ; the second joint of the same length as the 

 first, much narrowed at the base ; the three following joints trans- 

 verse and of equal length, the five apical ones rather longer, of 

 equal length, the apex of the apical joint pointed; the labrum 

 transverse, the anterior margin rounded ; the mentum rather longer 

 than the labium, the former acute at its apex, the latter blunt or 

 rounded ; the labial palpi 4-jointed, the two basal joints stout and of 

 equal length, the two apical ones shorter and much more slender ; the 

 paraglosste about the same length as the palpi ; the maxillary palpi 

 6-jointed, the three basal joints stout and of equal length, the three 

 apical joints much more slender, and each in succession shorter than 

 the preceding ; the ocelli placed in a curve on the vertex. Thorax : 

 large and ovate ; the anterior icings with one marginal and two sub- 



