September 1S91.] 



PSYCHE. 



147 



as described by Edwards & Elliot, that I will 

 not re-describe them. When young the 

 larvae each rest on a little web on the under 

 side of a leaf, the head held out quite flat. 

 The mature larva is thickest at joint 9, and 

 tapers slightly to the extremities. Beside 

 the yellow subdorsal band mentioned by the 

 describers there is a fainter white substigma- 

 tal one on joints 2-4. 



The widths of head for the five stages, calcu- 

 lated and actually found, are as follows : — 



Calculated. — 0.48,0.74, 1.14, 1.75, 2.7 mm. 

 Ratio, 0.65. 



Found. — 0.7, 1.2, 1.7, 2.7 mm. 



The cocoon is formed of few threads, at 

 the ground. The pupa is very dark brown, 

 almost black; flattened on the ventral side, 

 the dorsum evenly rounded ; finely punc- 

 tured. The abdominal segments are closely 

 appressed, motionless; cremaster none, anal 

 segments evenly rounded. Length 10 mm., 

 width 4.5 mm. 



There are two broods each year, and the 

 winter is passed in the pupal stage. 



Edema albicosta Hi\b>ter.-\ 



Hiibn., Noct. 440. 



Herr-Sch., Syst. bearb. sch. Eur. fig. 131. 



1S71. Staudinger, Cat. Lep. Europ. (Note.) 



This larva has not such an abnormal de- 

 velopment as I have supposed. I have re- 

 calculated the series for the widths of head, 

 and find the following much better than the 

 one I gave in Psyche, v 5, p. 421, viz. : — 



Calculated. — 0.61, 0.85, 1.19. 1.66, 2.30, 3.2. 

 Ratio, .72. 



Found. — 0.4, 0.7, 1.3, 1.7, 2.3, 3.2 mm. 



This fits the observed facts except in regard 

 to the first two stages, and I may have 

 measured them too small. All the measure- 

 ments were taken from living larvae, and 

 hence are liable to some discrepancy. 



The species has six larval stages, which is 

 abnormal among the Ptilodontes if we ex- 

 cept Ichthynra inclusa,% which seems to have 

 also six stages, and the species of Apatelodes 

 and Nadata, which probably have even 

 more. 



THE NEW CATALOGUE OF EURO- 

 PEAN COLEOPTERA.* 



This is in every way the most elaborate 

 and important edition (No. iv) of the Cata- 

 logue of the European Coleoptera yet pub- 

 lished. It is on a somewhat new plan. The 

 family arrangement is that usually followed 

 in Europe. The sequence of the genera and 

 species is that adopted by some monogra- 



* Catalogus Coleopterorum Europae, Caucasi et Ar- 

 meniae Rossicae. Edited by Edmund Reitter. Ber- 

 lin, MSdling, Caen. 1891. 



t I have erroneously referred to this species in 

 Psyche, v. 5, p. 421, as E. albifrons S. & A. All 

 the specimens which have occurred to me at Rhine- 

 beck, N. Y., have been E. albicosta, as I have recently 

 discovered. The species may readily be separated by 

 the character of the projecting tooth of the white costal 



pher of the family, or genus, usually the 

 latest, reference to whose work is made 

 under the title. The name of the species, 

 with the principal synonyms, and the author- 

 ities for their creation, with other useful biblio- 

 graphical references follow, as well as indi- 

 cations of geographical distribution within 

 the faunal limits laid down. In the preface 

 it is stated that the work was parcelled out 

 to Mr. L. Ganglbauer, Dr. L. v. Heyden, Dr. 



band, which in albijrons is regularly rounded, but in 

 albicosta is sharply pointed or dentate. I strongly 

 suspect that the larvae described by Mr. Beutenmuller 

 in Ent. Amer. vol. 6, p. 75, and by Dr. Packard in 

 Proc. Bost. soc. nat. hist. vol. 24, p. 525, as E. albifrons, 

 are really those of E. albicosta. 



X Prof. French finds six stages for /. palla (=in- 

 clusa) in Can. ent., v. 17, p. 42, and I have measure- 

 ments which, as far as they go, corroborate him. 



