516 VARIETILS. 



has led him into the inadvertence of charging to my friend, 

 Mr. Curtis, as an innovation, a practice adopted by many 

 other of the most eminent entomologists. As A seems to 

 restrict his remarks to the present practice, it is needless to go 

 back to the authority of Linne or Fabricius ; but opening the 

 entomological parts of Le Regne Animal, and Stephens's 

 Catalogue, I take a few out of the numerous examples I find 

 there, not to defend the principle, but to shew how far it is an 

 innovation. Yours, &c. A. H. Haliday. 



[Mr. Haliday gives a considerable list from Latreille, La- 

 marck, Stephens, &c., of generic names decidedly of Latin 

 origin; it is no innovation, yet still we are disposed to recommend 

 the use of Greek-compounded words in preference. — Ed.] 



52. Burroiving Hymenoplera. — Sir, The following brief 

 enumeration comprehends all the Hymenojitera of the burrow- 

 ing tribes which have occurred to me on the eastern coast of 

 Ireland, from Dublin northwards: — Ceropales macidatus; 

 Ponipilus pidcher, niger, gibbus, fiiscus, exaltatus ; Larra 

 ichneuvionijormis * ; Mellimis arvcnsis ; Stigjm/s Troglo- 

 dytes^ ; Pemphredon lugiibris*, unicolor ; Crabro 4<-macu- 

 latus, pahnipeSi eloyigatulus* , bidetis*, (Haliday) ; Rhopalum 

 tibiale*, rnfiventre* ; Oxybellus uniglumis. Of Crabro 

 bidens, I subjoin the following description : — 



Cra. bidens. Mas. Niger, nitidissimus ; capite, tlioraceqne 

 jnibescentibus, ocellis in triangidnm ceqidlatus positis, cly- 

 peus utrinque rtmcronato, abdomine latitudine et longi- 

 tudidine thoracis. 



Statura et iiiagnitudo Cr. Leucostomce caput robustum, supra 

 subquadratum, fusco pubescens, facie ut in reliquis argentea : 

 antennae breviusculae, haut ciliatae ; metathorax breviter rotun- 

 datus, laevis sulculo medio longitudinali, scutello (cordiformi) 

 indistincto ; abdomen fere latitudine thoracis et vix longius, niti- 

 dissimum, apice flavescenti-pellucido ; pedes graciles coxis baud 

 lanatis, metatarso antico lineari recto, calcaribus posticis dilutius 

 fuscis. 

 Taken on the sand-hills. Bay of Dundrum; August. 



A. H. Haliday. 



53. Observations respecting the Genus Castnia, (Vid. ante, 

 p. 309.)— Sir, When I alluded to the fact that Castnia sits 

 with its wings deflexed, I was not aware that Mr. Swainsan 



