4-62 HISTORY or ENTOMOLOGY. 



2. ULONATA 3 . (Orthoptera Oliv.) Maxilla covered by 



an obtuse galea or lobe. 



3. SYNiSTATA b . (Neuroptera L., excluding the Libel- 



lulina, and taking in Termes L. and Thysanura 

 Latr.) Maxilla geniculate at the base and connate 

 with the labium. 



4. PIEZATA C . (Hymenoptera L.) Maxilla corneous, 



compressed, often elongate. 



5. ODONATA d . (Libellulina M C L.) Maxilla corneous, 



toothed, two palpi. 



6. MiTOSATA 6 . (Myriapoda Leach.) Maxilla corneous, 



vaulted, not palpigerous. 

 ** 



7. UNOGATA F . (Pulmonary Arachnida Latr.) Maxilla 



corneous, armed with a claw. 



' 8. POLYGONATA&. (Isopod and Branchiopod Crustacea 



Latr.) Palpi mostly six; Maxilla many within the 



labium. 

 9. KLEISTOGNATHA 11 . (Brachyurous Decapod Crustacea 



Latr.) Many Maxilla without the labium, closing 



the mouth. 

 10. EXOCHNATA'. (Macrurous Decapod Crustacea Latr.) 



Maxilla many without the labium, covered by 



palpi. 



a Derivation uncertain. Perhaps At/x<yy, A long and narrow space 

 or tract. 



b 2twffT^/, To stand together. c ttis&, To press. 



d OBa?, A tooth. n Mtro;, A thread. 



f Unogata is probably a mistake for Onycliata ; from Owf, A claw. 

 K Doubtless for Polygnatha; from IToXyj-, Many, and TvaQoc, A jaw. 

 ll K^f/ffTo?, Closed, and 

 1 Ei<y, Without, and 



