1887.] 231 



and of the parts of the mouth is exactly like the figures given in my 

 paper, " Characters of the larvae of Mycetophilida.'''' When I compare 

 the head to that of the larva of Sciopliila, as figured by me {I. c, fig 7), 

 I find that the palpi are less developed and more like those in figs. 1 

 and 2. The sutures on the upper-side of the head, which I called 

 " occipital lines," converge tovrards the posterior margin of the head 

 (somewhat like in fig. 4, f). The posterior margin, of the upper-side, 

 projects in the middle, and has an emargination in the middle of the 

 projection (somewhat like fig. 2, t., only less pronounced). On the 

 under-side of the head, the posterior margin shows an excision which 

 is broader than that in fig. 7. The shell of the head is much softer 

 than that of the Mycetophilce or Bolitophilce which I have seen, 

 brownish-yellow, that is, in consistency and colour exactly like the 

 larvae of Sciophila reared by me. 



Mr. Hudson writes that he also discovered a luminous pupa sus- 

 pended in one of the webs. " It is chiefly remai'kable for a long 

 process extending from the dorsal surface of the thorax and branching 

 into several long filaments." Unfortunately, he did not succeed in 

 rearing it. The pupse of Sciophila seen by me were likewise suspended 

 in the webs (see my above-quoted paper, p. 14) ; the long filaments I 

 did not observe. I do not remember seeing my larvse in the dark ; 

 but from their peculiar colouring I should not wonder if they were 

 likewise luminous. 



I have already mentioned (ante, p. 133) that I have recently re- 

 printed my paper on the larvae of Mycetophilidw, the original edition 

 having become very scarce. It would afford me great pleasure to send 

 a copy or copies, free of expense, to any one applying to me for them. 



Heidelberg, Germany : 



February 3rd, 1887. 



A NEW SPECIES OP POLYPHYLLA FEOM JAPAN. 

 BY GEOKGE LEWIS, F.L.S. 



POLTPHTLLA LATICOLLIS. 



(J . P.fullonis proxime affinis, at paulo latior ; tliorace castaneo ; 

 clypeo utrinque acute angulato. L. 35 mill. 



Very closely allied to the European Polyphylla fullo, Linn., but may be readily 

 known from it by three or four characters. The head is larger, and the clypcus is 

 more transverse, sometimes with the anterior edge bisinuate, and the angles are 

 produced somewhat acutely, and are not rounded-off as in fullo. The frontal ridge 

 is very distinctly elevated, and shows clearly the line where the clypeus begins. The 



