ORISMOLOGY. 339 
hand is dilated into a broad scutiform plate.— Ex. 
Hydrophilus piceus $ . Plate XV. Fig. 8. 
3. Strigilate (Strigilata). When on the inner side 
of the first joint of the hand or palm the segment 
of a circle is taken out at the base opposite to the 
spur, the sinus being often pectinated with spines. 
—Ex. Apis*. Plate XXVII. Fig. 36. a. 
4. Auriculate {Auricidata). When any of the joints 
are externally dilated into an auriform process. 
—Ex. Gryllotalpa. Plate XV. Fig. 6. I". 
ii. ALITRUNK {Autiwxcus). 
1. Buried (Sepultus). When its upper surface is wholly 
or nearly covered and hidden by the thorax, elytra 
or other organs of flight b .— Ex. Coleoptera, Or- 
thoptera. 
2. Revealed (Revelatus). When it is not so covered, 
but is equally conspicuous with the Prothorax, or 
even more so.— Ex. Neuroptera, Hi/menopiera, 
Diptera. Atractocerus in Coleoptera. 
3. Coalite (Coalitus). When it is not separable into 
two segments, the Medipectus and the Postpectus 
forming one piece. — Ex. Cimex L. 
4. Bisected (Bisectus). When it is separable into 
two segments. — Ex. Lamellicorn beetles. 
a. mesothorax. 
u. collar (Collare). 
1. Uncovered {Apertum). When it is not concealed 
' Monogr. Ap. Angl. I 97. t. xii. Apis **. e. 1. Neut./. 21. d. 
b This term may be applied to the Mesothorax in heteropterous 
Hemiptera, in which that part lies buried under the Prothorax 
Plate VIII. Fig. 20. i, k. 
Z2 
