28 ENTOMOLOGICAL SOCIETY 



Of the Cryptocephalini, I have had no specimens. The Clyth- 

 rini and Chlamydini resemble each other, and I gather from de 

 scriptions also the Cryptocephalidae, in being case bearers and 

 having the abdomen bent sharply ventrad ; ocelli six ; mandibles 

 tridentate ; maxillary palpus of three segments, lacinia wanting; 

 labial palpi of two segments, with palpiger distinct : legs elon 

 gate ; prolegs wanting ; tubercles wanting ; ninth abdominal ter- 

 gite longer than those cephalad. I have had but few of the larvae 

 of these three tribes, and but few have been described, but they 

 seem to be most nearly related to those of the Eumolpini. 



The larvas of the Hispini are leaf miners, and resemble those of 

 the Cerambycidae move than most of the Chrysomelidae. Each 

 segment is marked dorsally and ventrally by a transverse depres 

 sion, similar to those found in the larvae of the Cerarobycidse, 

 around which one may distinguish the usual setae after consider 

 able study. The caudal margin of the head is produced strongly 

 cauclad, to which projection are attached strong muscles also 

 attached on the under side of the pronotum. Ocelli six ; mandi 

 bles five-dentate ; maxillary palpi of one or two segments, lacinia 

 wanting ; labial palpi of one segment, ligula reaching anterior of 

 maxillae, maxillae and labium sometimes grown together ; eighth 

 abdominal spiracles situated dorsally on ninth tergite and much 

 enlarged ; prolegs wanting. 



The larvae of the Cassidini are probably the most interesting 

 of all. They are flattened and elliptical in outline, bordered later 

 ally with a row of long barbed spines (tubercles VII plus VIII 

 on the abdomen, VI, VII and VIII on the thorax) ; arising from 

 the ninth abdominal segment is a two-pronged organ whose 

 prongs are really homologous with the lateral spines, known as 

 the faeci-fork. When bent forwards the tip of this fork reaches 

 the thorax or prothorax ; it is usually covered with the cast skins 

 of the larva and a mass of excrement, in which case the larva is 

 almost entirely covered by it and appears on the leaf like a bird 

 dropping. These larvas have six ocelli ; mandibles five dentate ; 

 maxillary palpi of two segments, lacinia wanting; labial palpi of 

 two segments ; prolegs wanting ; head covered by the prothorax, 

 mouth parts inferior. 



Upon comparing the characters enumerated it is seen that the 

 larvae arrange themselves naturally into five main groups, with a 

 classification somewhat as follows : 



