114 



[May, 



coiijasuiius, Grav., J , Peaibridge, 15.7-02. riatylahiiii rufus, Wesiu., 2 ? , Wool- 

 hope, 14-15.;).02. Aloinyia dcheUator, Vah., ^ , Cuso\), ll.f).02. Cryptus minatnr, 

 Grav., (J , Much Markle, 27.5.U2 ; iuberculutus, Grav., S , Pembridge, 15.7.02. Stylo- 

 cryptus vayrthundus,Grra,v., ^j* , Turriugton, 18.7.02. Panisciis testaceue, Grav., ?, 

 Ledbury, 12.7.U2. Anomahn (Agrypnn) fiaveolatum, Grav., 2 ? , Tarrington, 

 ] 1 8.02, Ledbury, 4.6.02. Atractodes vestalis, Hal., S , Tram Inn, 29.7.02. Perilissus 

 fiUcornls, Grav., ? , Much Markle, 27.5.02. Tryphnn signator, Grav., ? , Tarrington, 

 9.6.02. RxorJms coronatus, Grav., $ , Tarrington, 22.8.02. Bassuf> nenioralis, 

 Holnigr., J , Tarrington, 17.7.02 ; siynatus, G-r&v., ?, Tarrington, 10.8.02. Lissu- 

 nuta bdlator, Grav., cJ , Pembridge, 15.7.02. Sniicra sispes, Linn. {C kalcidida;) , 

 Tarrington, 10-13.7.02. 



HELP-NOTES TOWARDS THE DETERMINATION OF BRITISH 

 TENTER EDINID^t:, &c. (3). 



BY THE REV. F. I). MOKICE, M.A., F.K.S. 



iVpart from alar ueuration, the following are among the uiost 

 useful characters for determining Saw-flies: — 



1. The outlines of the FiG. 6. 

 head as seen from above : e. g., 

 to vi^hat extent it projects or is 

 excavated at various points near 

 the antennse ; whether its sides 

 converge from the eyes to the 

 occiput, or no ; &c., &e. ^- AUd.nt'a.S Ir Tentlir^c{o 



2. The development of depressed or elevated spaces on the head, sulci, carina-, 

 tubercles, a more or less distinct " area pentagona," deep impressions bounding the 

 " vertical area," " furrowed" and " margined " tempora, &c. 



3. The proportions of the vertical area ; and of the gentE (('. c, the distance 

 between the eye and the mandible). 



4. The apical outline of the clypeus — deeply excised, slightly and broadly 

 emarginate, truncate,* &c. 



Fm. 



0- 



a — clypcus (excised) of a Pteronus. 



b — clypeus (truncate) of a Lygcronematus. 



c — clypeus (slightly and broadly emarginate) of a Tcntkredopsis. 



5. The structure of the antennae, e. ;/., dilatations of certain joints ; com- 

 parative length and breadth of ditto ; general shape, as clavate (clubbed), jHiform 

 (threadlike), setifuni (tapering), serrate (apices of joints projecting), &c. 



6. The form of the claws (a character not always easy to see, but often im- 



* Mr Cameron regularly calLs a truncate clypeus "tranxverse." But surely that word denotes 

 the reverse, not of " excised " or "emarginate," but of "elongate " or of " longitudinal." 



