o 



20 CALIFORNIA ACADEMY OF SCIENCES. 



being identical with P. fusconiger Mots., from Unalaska 

 Id., and not, as represented by M. Fanvel (Not. Ent. vii, p. 

 83), the Tilea cavicollis of the latter author. Longipalpus is 

 evidently distinct from fusconiger, since the femora are de- 

 scribed as being paler toward base in the latter, while in 

 the former, even in the most immature specimens which I 

 have seen, the femora are always perfectly uniform in color 

 throughout and black; they are also somewhat alutaceous. 

 This is the only character of positive importance which can 

 enter into the comparison, the remaining characters given by 

 Maklin being applicable to a great variety of species; the 

 color of fusconiger being as stated, black, would in addition 

 lead us to suppose that the type of that species was not im- 

 mature; the coloration of the femora is, therefore, for this 

 reason, of still greater importance. The present species is 

 distinct from Tilea cavicollis Fauv., in the structure of the 

 palpi and in the color of the upper surface which is of an 

 intense black throughout in the former. I have placed 

 longipalpus in the genus Phlceopterus Mots., simply because 

 it cannot appropriately enter Tilea Fauv., unless a wide limit 

 of variation be granted to that genus in the relative length 

 of the fourth joint of the maxillary palpi, and as it evidently 

 differs widely from Lesteva, the present disposition obviates 

 the necessity for the creation of a new genus, but is made at 

 the same time without any positive proof of the generic 

 identity of longipalpus and fusconiger. 



One of the specimens before me is affected by a peculiar 

 disease, of which the principal feature is a remarkable 

 growth of long irregular corneous filaments from the dorsal 

 surfaces; some of the filaments have at the base a very 

 elongate acicular lobe. I have also noticed a similar fun- 

 goid disease affecting the CarabidaB, but in which the fila- 

 ments, instead of being long and very slender, are shorter, 

 robust and strongly club-shaped. 



