18 JOURNAL, OF ENTQMOLOGY AND ZOOLOGY 



of reach of a net. The motion of individual specimens in a 

 swarm varies at different times, now being a slow 8, now fast. 

 One or two seemed to copulate in midair; this was done so 

 rapidly, however, that it is not certain, the more so as it is so 

 different from the mating habits of the closely-related Hexa- 

 toma. 



The rearing of this material to the adult stage was accom- 

 plished by Mr. Lloyd ; the biological notes herein given, the 

 technical descriptions and the figures are by Mr. Alexander. 



We wish to express our sincere thanks for the kind help and 

 advice given to us by Dr. Needham during the progress of this 

 study. 



Description of the Species 



Common characters of the larvce — The body is rather stout, 

 yellowish, with a conspicuous bronzy sheen. The head-capsule 

 (plate I, figure A) is long and narrow, and when retracted is 

 completely concealed in the first thoracic segment, only the 

 tips of the long apical maxillary lobe projecting. The mand- 

 ibles are long, acutely pointed, decussate, provided with teeth 

 on the inner basal half (a). One of the lobes of the maxillae 

 (c) is prolonged cephalad in a long, flat, blade-like appendage. 

 The antennae (b) are rather long, cylindrical. The framework 

 of the head consists of a broad plate on either side in front, 

 herein described as the genal plate (e), and two long bars of 

 chitin extending backward on either side, one of these bars 

 occupying a dorsal position, the other constituting the lateral 

 margin of the capsule. The entire mental region seems to 

 lack chitinized parts. The cauda (plate I, figures I-L) 

 has the stigmal field free from lobes in longicornis or with four 

 lobes in the other species. 



Common characters of the pnpce — The head is provided with 

 a group of lobes herein spoken of as the cephalic crest (plate 

 II, figure A, a). Spines or tubercles occur in the different 

 species on the scape of the antenna, the tentorium, the clypeus, 

 the eye, the thoracic scutellum, etc. Pronotal breathing-horns 

 short, cylindrical {longicornis), long, cylindrical (fultonensis) 



