Fio. Y.— Brain of the locttit. 1. Front view of the brain of CaiopUntu femurrubrum: opt. gang., optic ganplion ; oe., ocelli and nerves 

 lending to tbem from the two hemispheres, each ocellar norvo arising from the region containing the calices ; m. oc, median ocellar nerve ; 

 opt. I., optic lobe aeuiliug oil* the optic nerve to the optic ganglion ; ant. I., antcnnal or olfactory lobe ; ant. n., antennal nerve : /. g., frontal 

 ganglion of sympathetic nerve: Ibr. n., nerve to laliruin; x, cross-nerve or commissure between the two hemispheres,' as. c, lesophageal 

 commissnre to siibcesophagoal ganglion. 2. Side view of the brain Had subicsophageal ganglion (lettering of brain as in Fig. 1) : $. g.. stoma- 

 togastric or sympathetic nerve; a. s.g., anterior, and p. «. g.. posterior, sympathetic ganglia: g. 2, subd^sophageal ganglion: md., nerve to 

 mandible: mz., maxillary nerve; In., labial nerve; n. t, unknown nerve, perhaps salivary/ 3. Interior view of the right half of the head, 

 showing the brain in its natiu^l position: an., antenna; eZ.,clypens: 2Ar..labrum: m., mouth cavity; mtf., mandible : f., tongue; oe., oesopha- 

 gus : c, omp : m., right half of the endocranium or X-sbaped bone, through the anterior angle of which the o-sophagns passes, while the great 

 niandiliulnr musrles play in the lateral angles. The moon-shaped edge is that m.ide by the knife passing through tlie center of the X. 4. 

 View of br.iin from atwve (letters as before). 5. Subeesophageal ganglion from above : t. c, commissure to the succeeding thoracic ganglion ; 

 other letters as before. Fig, 3 is enbirged eight times : nil the rest twenty-flve times. 



Drawn from original dissections by the late Mr. Edward Burgess.— From Second Report 0. S. Entomological Commission, 



