34 NATURAL HISTORY BULLETIN 



the face of the first joint of the hind tarsus. The entire body 

 and the elytra show traces of fine hairs like those of recent species 

 of Mordellidfe. 



Nemognatha Illiger. 



N. EXSECTA n. sp. (Plate V, Fig. 10.) Preserved in part profile. Form 

 rather slender. Head moderate in size, hind angles pronounced, but rounded, 

 surface finely punctulate, eye of normal size, elliptical in outline, antennae 

 long, only the median or ultramedian joints preserved, these distinctly 

 longer than wide. Maxillary processes longer than the head and prothorax 

 together. Prothorax tapering a little anteriorly, the surface moderately 

 coarsely cribrately punctured. Elytral punctuation shallow. Middle leg 

 slender, the others wanting. Length, 7.00 mm. 



Station number 14. One paired specimen, collected by Mrs. "W. P. Cock- 

 erell. The type is in the Museum of the University of Colorado. 



Only one Meloide, Gnatkium (etatis, has thus far been described 

 from the Florissant shales. It is a little smaller than N. exsecta 

 and has the prothorax sculptured only with very faint transverse 

 rugffi. The present species had a thoracic punctuation similar to 

 that of our recent N. vittigera or iV. crihricolUs. In addition to 

 the type, cited above, a second specimen, from Station number 

 13B, collected by Geo. N. Kohwer, has been met with in the ma- 

 terial received directly from Professor Cockerell. This does not 

 show the sculpture as well as the type, and exhibits only the 

 bases of the maxillary processes, but is assigned here without 

 much doubt. 



DociRHYNCHUs Scudd. 



D. IBIS n. sp. (Plate VIII, Fig. 1.) Form similar to that of D. culex 

 from the Florissant shales. Head small and rather deeply sunken in the 

 jirothorax. Eye transversely elliptical. Genal and gular regions with about 

 eight equidistant stri® visible in side view. Beak very long, a little curved, 

 scarcely tapering and not dilated at the apex, a strong lateral stria 

 or carina extending nearly the whole length. Antennae not well enough 

 preserved to show the jointing in sufficient detail for description, but they 

 are inserted near the middle of the beak and have a slender, three jointed 

 club. Neither the head nor beak show more than a very faint punctuation 

 under the magnification of six or eight diameters. Prothorax about four- 

 fifths as long as high, subtriangular in profile, dorsal line regularly and 

 rather strongly arched, surface finely, sparsely punctured, and with a 

 coarser transverse verrucose sculpture in addition. Elytra incomplete at apex, 

 but more than twice as long as the prothorax, with longitudinal rows of 



