2 JOURNAL. OF ENTOMOLOGY AND ZOOLOGY 



truncated) are quite lacking in UJa, the larva possessing five lobes 

 around the stigmal field, the mouth-parts similar to those of Limno- 

 phila, the pupa essentially LimnophiVnie, etc. 



Stannius (Beitr. zur EntomoL, vol. 1, p. 205, 1826) was the 

 first to give us any information on the immature stages of any mem- 

 ber of this genus. He states that the larva of Ula macroptera (as 

 pilosa Schummel) lives in species of Agaricus, and remarks that 

 the larva is very similar to that of Limnobia xanthoptera Meigen. 



Perris (Note pour servir a Thistoire de la Cylindrotoma macrop- 

 tera Macquart, in Notes pour servir a Thistoire des metamorphoses 

 de diverses especes de Dipteres; Ann. Soc. Ent. France, vol. 7, pp. 

 337 to 341, 1849) gives a brief description and unsatisfactory 

 figures of this same species. He describes the caudal end of the 

 body as having but four lobes, two being lateral and two ventral; 

 no mention is made of the median dorsal lobe, and it may have been 

 overlooked or it mav be very reduced in this species; the caudal or 

 inner aspect of these lobes that surround the stigmal field are pro- 

 vided with small chitinized pieces which, as the author suggests, 

 may serve as points of attachment for the muscular fibres. His 

 account in part may be translated as follows : The fungus in which 

 the larvse were found was Hydnum erinaceum Bull., which grows 

 on the trunks of living oak-trees. The larvae are gregarious and 

 frequent galleries in the fungus along which they progress by means 

 of their mandibles, which move transversely to their bodies, by 

 their ambulatory feet, by their short hairs and the lobes of the last 

 segment. They were found in the month of November in the 

 Mont-de-Marsan, and a month later they were going into the earth 

 where they transformed as pupae. These latter quite resemble the 

 pupas of Limnophila, having the same structure, same size, the same 

 hooks, differing only in the color, which is uniformly testaceous, 

 though the breathing horns, instead of being very recurved, are 

 scarcely sinuous. When the time of the last metamorphosis has 

 come, that is about in the months of February and March, the 

 nymph raises itself by means of the spines, comes to the surface of 

 the earth and places itself in position; soon the head and thorax 

 split longitudinally, and it is by this movement that the adult 

 escapes, leaving the exuvia of the nymph fixed in the earth. 



