apically. Legs of moderate length, finely roughened, possibly by hair 

 marks. Length, exclusive of rostrum, 3.00 mm. 

 Described from one specimen with counterpart. 



By all the visible characters, this seems to be a good Centrinus. 

 The elytral striation will separate it at once from Miogeraeus, 

 while the longer beak and different form of body will distinguish 

 it from Auloharis damnata. It is not especially likely to be mis- 

 taken for any of the other Florissant fossils. 



PITYOPHTHOEIDEA gen nov. 



A name proposed for a fossil insect of the same general form as the 

 recent PityopJithorus and with similar sculpture but having the intermediate 

 abdominal segments less shortened. 



Type. P. diluvialis sp. nov. 



PITYOPHTHOEIDEA DILUVIALIS sp. nov. 

 (Plate IV, figs. 27, 28). 



Form moderately elongate, nearly parallel. Head crushed and partly 

 obliterated. Prothorax projecting over the head, dorsum a little arched 

 and with about six transverse rows of asperities which look like the raised 

 edges of large subconflueut punctures. Elytron about one and two-thirds 

 times the length of the prothorax, with rows of punctures not very well 

 preserved but evidently large and only fairly deep. Legs short, rather 

 stout. Lengih, from front margin of prothorax to elytral apex, 2.40 mm. 



Described from one specimen, with counterpart. 



Looks very much like a PityopJithorus, but is shorter and 

 stouter than the average in this genus. The print on one slab 

 shows a portion of the abdomen very well and it is on account 

 of the somewhat greater length of the intermediate segments 

 that I have proposed a new generic name. 



ADIPOCEPHALUS gen. nov. 

 This name is proposed for an insect probably belonging to the tribe 

 Scolytini, by the ascending ventral surface of the abdomen, but with an 

 enormous head which approximates the prothorax in size. The hind tibiae 

 (at least) are broad and flat, femora stout. Body sculpture rough. The 

 eye is not definable in entirety, but what shows of the upper margin indi- 

 cates that it is broader and shorter than in the modern Scolytus. In gen- 

 eral, the abdominal segmentation agrees with that genus but the surface 

 was probably less strongly ascending in the fossil. 

 Type. A. hydropicus sp. nov. 



ADIPOCEPHALUS HYDROPICUS sp. nov. 

 (Plate II, fig. 10). 

 Preserved in lateral view. Form stout, subparallel. Head extremely 



18 



