. Smithsonian miscellaneous collections. ntral reflected lobe which may correspondto the prephragma in other insects. A precosta is not present as aplate defined by lines or sculpture. On the level of the interior originof the anterior apodeme a suture extends interiorly separating theposterior prealar process from the prescutum proper. This processextends laterally, is covered by the scutular lobe and is fused withit at the extreme end. From the antero-lateral corners of the prescu-tum proper originate two prominent hooks, the anterior prealar proc-esses (f). Laterally to the anterior prealar
. Smithsonian miscellaneous collections. ntral reflected lobe which may correspondto the prephragma in other insects. A precosta is not present as aplate defined by lines or sculpture. On the level of the interior originof the anterior apodeme a suture extends interiorly separating theposterior prealar process from the prescutum proper. This processextends laterally, is covered by the scutular lobe and is fused withit at the extreme end. From the antero-lateral corners of the prescu-tum proper originate two prominent hooks, the anterior prealar proc-esses (f). Laterally to the anterior prealar process are two disklikeformations on each side (g, h) connected with the posterior prealarprocess. According to Hopkins, the posterior disk (prescutal disk)serves for the small muscles connecting it with the pleural rather intensive investigation would be necessary to determine thepurpose of all these formations and homologize them with similarequivalent parts in other groups. NO. 10 MORPHOLOGY OF GNATHOTRICHUS—SCHEDL 37. >^ °.2S > u p. ; Pc, prurn: i?,^s of theedian appostnotu; bi, poilator dis u it u d .. o 3 J:; u > m^-^ -^ Co- _] a. OS medianP^c, prexi—i, axilr suture;lar hookpleural svcess; fu rt 5 s;;: ° .i2 ^•S3ii=-2S•-,^3 1- rtC^ eg : o > a> u ^ •^£c«.2 35 wr, 1- u— 11 i;7^ O y^ f ? •- tn ^?Ec^S . j2s«e5 5.£ u M IJ E -£ CCL, %i o u ^ u-> 3 3 -r- c w ;i :rr 3_ S c « o G -^ 38 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 82 —The largest plate of the metanotum is the scu
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