HiivNi urn D.K — isotiihin.k — iso'iiikim. 21 



what forwanl at tlic liasc ,>{' tlic rostnmi. 'I'lic protliorax is ilclicatdv 

 jiTamilosc, as arc also the liiml t'ciiiora. 



Lcngtli lit" Itody, iiiclii(liii<i- rostrum, 7-5"""; of licad ami rostniiii, 

 ;{"""; of antenn.ne, 2-1""": hreadth of abdonien, 2-3""". 



Florissant, Colorado; one specimen, No. 1058. 



I name this species for my friend aiul fellow-student, Mr. J. A. Allen, 

 of the American Museum of Natural History, New York. 



TKYPAN0RHYNCHU8 (rpf'Trayny, pv'yx"^), o-eu. nov. 



The form ot the body is here more plumji than in the preccfiin"- 

 genera, and the rostrum, instead of l)ein«;- thrust strai«rht forward, is 

 directed more or less obli(iuely downward, 'j'he head is large at base, 

 rapidly tapers, with a full outline, and. with the rostrum, is fuUv two-thirds 

 as long as the elytra; the rostrum is stout, rigidly straight, longer than the 

 head; the eyes are moderately large, more or less oval, almost or ipiite 

 longitudinal, situated next the base of the rostrum; the antennae are 

 inserted a little beyond the base of the rostrum, an<l in the only specimen 

 in which they can be made out the basal joints are destroyed; the antennse 

 are about as long as the rostrum, the fourth and tiftli joints (•^•Hndri(•al. a 

 little enlarged apically, more than twice as long as broad; the sixth to the 

 eighth alxmt two-thirds as long as the jn-eceding and more distinctlv 

 enlarged, and also nntre or le.ss truncate apically; the succeeding joints 

 form a long and slender, oval, loo.se club twice as broad as the stalk and 

 four or five times as long as broad, the joints sube(pial. 'I'lie prothorax is 

 simple, tumid, and, with the elytra, shows a wi-ll-arched back. The legs 

 are of moderate length, the fore femora only a little enlarjied apically. 



Three species occur in the western Tertiaries, all at Florissant 



Table of the species of Tiypanorhi/nchiis. 



Larger. Kostnuii mucli shorter tliaii li<a<l and tlmrax togctlicr. enlarged in its apical 

 lialf; longer axis of eye set at an acute angle witti the rostrum corniptirus. 



Smaller. Hostrum nearly or <iuite as long as head aud thorax together, tapering 

 throughout ; longer axis of eye almost identical with that of rostrum ilepiutus. 



Smallest. Rostrum of the length of tiie i)rothorax only, eipial throughout or i>o.ssiliIy 

 tai>eringatbase; louger axis of eye inclined slightly from that of rostrum. .sedatu«. 



