104 THE ENTOMOLOGIST. 



and the first abdominal segment very distinctly punctured. Bingham 

 states that the first segment oi f^iscipeMnis is wholly impunctate, but 

 Smith describes a few distant fine punctures. In our species they 

 are very distinct, and quite large at the sides. 



Xylocopa grandiceps, Cameron. 

 Singapore (Baker). I examined Cameron's type in the British 

 Museum, and noted : Large, with much red hair on thorax and tarsi. 

 The size given by Cameron is 20 mm., evidently an error for 30 mm. 



Mesotrichia jiavonigrescena, Smith. 

 A female from the Island of Penang (Baker) is Cameron's 

 Xylocojja malayana, which Meade- Waldo determined to be identical 

 with Smith's flavonigresce7is, based on the male. 



Mesotrichia confusa, Perez. 

 Male. Island of Penang (Baker 9079). 



Mesotrichia cceruleiformis, Meade-Waldo. 



Male. Singapoi'e (Baker 9081). This very distinct species was 

 described from Borneo in 1914. 



CONTRIBUTIONS TO OUR KNOWLEDGE OF THE 

 BRITISH BRACONID^. 



No. 3. — MiCROGASTERIDiE. 



By G. T. Lyle, F.E.S. 



(Continued from vol. 1, p. 201.) 



Genus 4. — Diolcogaster, Ashmead.* 



Ashmead erected this genus to receive those species of Micro- 

 gaster having the second abdominal segment impressed with two 

 parallel longitudinal lines. The appearance of this segment 

 renders it easy to distinguish the few British representatives 

 from those of other very closely related genera, though the 

 prominent longitudinal medial carina on the metathorax, men- 

 tioned by the author, is not developed in two of our three species. 



Marginatus, Nees.f 



As described by Marshall J and Ruthe.§ this insect has a 

 strongly carinated metathorax, though Nees, in his original 

 description, does not mention the character. The first abdominal 

 segment in the male is three times as long as its medial breadth 

 and attenuated from base to apex ; in the female it is said to be 

 much broader. I have seen only a single specimen, taken by 



* ' Proc. U.S. Nat. Mus., xxiii, p. 132. 



t 'Mon.,'i, p. 169. 



I 'Trans. Entom. Soc.,' 1885, p. 244. 



§ 'Berl. ent. Zeit.,' 1860, p. 155. 



