136 HYMENOPTERA. 



Apterous individuals occur among the Ceraphronides, 

 causing a dfficulty of the same kind as Pezomachus, but less 

 in degree, owing to the smaller number of species. Lagy- 

 nodes pallidus, Boh., $ (= Microps rubi, Hal., MS.) is 

 invariably apterous, and the $ therefore unobserved in 

 England, though Forster seems to have been acquainted 

 with the sexes of his species. Several Megaspili are liable 

 to be more or less apterous. M. riifipes, Nees, exhibits 

 wings of various development ; and both sexes of M. halte- 

 ratus, Boh., and cursitans, Nees, are common in a wingless 

 state. Observations upon this group might be made without 

 great difficulty, and would probably throw some light upon 

 Pezomachus. 



Of Idiotypa rufiventris, Thoms. (Diapriides), I have 

 taken both sexes in Devonshire ; the ? only is described 

 by Thomson. Haliday was acquainted with both sexes of 

 his undescribed Mionopria maritima, which is doubtless the 

 same insect. 



$ Antennae corpore paulo longiores, nigrcE ; articulis 

 1 — 2—3 testaceis; articulo 4o subincrassato, quam tertius 

 longiore; 5 — 13 subcBqualibus. Caput latius quam ? ; ab- 

 domen angustius, nigrum. Statura paulo minor. CcBtera 

 lit in ? . 



I described Spilomicrus hemipterus $ (E. M. M. iv. 202) 

 from a single example. Since that time nine more have 

 occurred in Hertfordshire, agreeing exactly with the descrip- 

 tion and confirming the species. 



The ? of WesUvood's Basalys fumipennis is undoubtedly 

 Diapria antennata, Nees. The identity is queried in my 

 Catalogue, owing to a remark of Forster in the Hym. Stud. 

 But a fresh examination of the insects, agreeing in size and 

 largest of their kind, together with the analogy of the 



