118 [January 



" hairs tuuches the surface all the time. beiii<; apparently not over one or 

 •'one and a half uiillimetres in length, and obscurely developed when coni- 

 " pared with the view obtained on June 7th under the surface of the water. 



•' Occasionally a bubble of air is discharged from the tail. Generally. 

 • when it is beneath the surface, the anal pencil is retracted entirely. It 

 '• has the power of jerking its body suddenly round, and darting up and 

 " down with great vigor. Its remarkably long antenna} are constantly vi- 

 '• brating. like those of terrestrial insects. Its general habit is to crawl 

 •• on decayed wood beneath the surface, occasionally swimming to the sur- 

 " face, probably for a fresh supply of air. 



•' The puj)a is white, with large black eyes which are very consjdcuous 

 '• liciicath. and two short black setaj on the occiput. The body is covered 

 •' with a short, white, erect down or pubescence. The antenn;i? are about 

 '• two-thirds the length of the body, placed lengthways beneath, side by 

 '•side. The body is scarcely .'1 inch. long. 



" The imago occurred at the same time as the larva, in profusion, in the 

 •■rotten walls of the hollow. 1 found none in my breeding jar aftei'.Juno 

 ■• 7th. From about Jime 14th to July 21st I was absent from home. On 

 •■ August 7th 1 examined the jar. and found eight or ten larv;\J in it. but 

 " no pupa3 or imagos. 



'• The stump whence they were obtaineil. sujiplied many additional lar- 

 '• vai, but none have since developed into the imago state. Hence 1 con- 

 •■ elude that this insect is not double-brooded." 



PARANDRA BRUNNEA l-\al.i. 

 (Plate 1. Fig. li.) 



The longicorn larva? are remarkable for the great uniformity of their 

 general appearance and structure and although a considerable number of 

 them have been described, the characters distinjiviishin"' the larvai of the 

 different groups of this family have not. as yet, been sufficiently defined. 



All that we know about these characters is contained in the following 

 passage of Erichson (Wiegm. Archiv. 1842. p. o7(i): ■•Notwithstanding 

 •• the great similitude between the larvte of Longicorns. some important 

 •• differences in the structui'e of those belonging to the four divisions of 

 •this family may Itc noticed. The larv;e of the fj(imli(hr differ more than 

 ••the others, on account of the total absence of feet and the position of 

 ■■ the ffrst pair of stigmata which is placed in the fold between ])ro- and 

 •• in(>sotboracic segnn^its. less abru]itly separated tlnin the othci's. Tbe 

 ■• otiier larva' Inive this first jiair on the sides ot the niesothor.ix, and have 



