1853.] 849" 



cies ; the maxillae are not longer than the head ; the mouth is very much pro- 

 longed, and the last joint of the maxillary palpi longer than the preceding. 



20. N. porosa, testacea, vix pubescens, thorace subtransverso, lateribus 

 rotundatis, parce grosse puuctato, elytris confluenter punctatis, antennis nigris, 

 tibiis tarsisque fnscis. Long. 24 29. 



Two specimens, Georgia; in one of them the elytra are brownish, leaving 

 only a narrow marginal suture and base testaceous. In structure and color 

 resembles exactly the last species, but differs in the sparse punctuation of the 

 thorax. 



21. N. f use ipe n n is, fusca, capitethoraceque testaceis, dense minus subtili- 

 ter punctatis, hoc rotundato, elytris confluenter punctatis, antennis nigris, femori- 

 bus plus minusve testaceis. Long. -19 '27, 



St. Louis, Missouri, Dr. Engelman. This species also, in the form of an- 

 tennce, palpi, maxillae and tibial spurs resembles the two preceding, but differs 

 in the form of the thorax, which is nearly round ; the abdomen and thighs vary 

 in color, being sometimes testaceous and sometimes fuscous. 



The following species are unknown to me : 



22. N. minima Say^ Journ. Acad. Nat. Sc. 3, 3, 306. 



23. N. calceolata G'?/eri?i, Icon. Regne An. 136. "Reddish, finely granu- 

 late, antennce, eyes, palpi, tip of mandibles, maxillae, base of femora, tibiic and 

 tarsi black. Lon^:. 10 mill.; lat. 3i mill." This may probably be allied to N. 

 1 u r i d a Lee, but as no essential character is expressed in the description, it is 

 impossible to recognise the species. 



24. Gnathium F r anci 1 1 o n i /f/rZiy, Linn. Tr. 12, 424, tab. 22, fig. 6. 

 The genus is said to have the mandibles elongated, and the antennae thickened ex- 

 ternally ; the first character is possessed by all the species of Nemognatha in 

 (B e) ; the second character I have not observed in any species. 



Zo^ITIS Fabr, 



1. Z. a t r ip en n is, laete flavo-testacea nitida, thorace non transverse, late- 

 ribus antice rotundatis, minus dense punctato, elytris nigris brevissime pubes- 

 centibus grosse parce punctatis, pectore tibiisque infuscatis, antennis tarsisque 

 nigris. Long. "25 '43. 



Nemognatlia atripejinis Say, Journ. Acad. Nat, Sc. 3, 306. 



Missouri Territory and Santa Fe. The mouth is more prolong?d than in the 

 other species, but the maxillae are destitute of the thread-like extension fonnd in 

 Nemognatha. The second joint of the antennae is equal to the first, and shorter 

 than the third. The spurs of the posterior tibiae are slender, the outer one a 

 little longer and obtuse. 



2. Z. flavida, flava, nitida, thorace non transverso, lateribus antice rotun- 

 dato, minus dense punctato, elytris brevissime pubescentibus parcius grosse 

 punctatis, tibiarum apice, genubus tarsisque fuscis, antennis nigris. Long. '4. 



Santa Fe, New Mexico. Mr. Fendler. In form and sculpture resembles the 

 preceding. One specimen has a large black blotch at the apex of the elytra. It 

 is possible that a larger series of specimens may prove the necessity of uniting 

 this with the preceding species. 



3. Z. b iline ata, testacea, thorace subtransverso, quadrato, angulis rotun- 

 datis, parce punctato, elytris rugose punctatis, pallidis, vittautririque fusca, saepe 

 obsoleta, pectore, tibiis, scutelloque plus minusve infuscatis, antennis nigris. 

 Long. "3 '35. 



Say, Journ. Acad. Nat. Sc. 1,22. 



Z. lineata Mels. Proc. Acad. Nat. Sc. 3, 53. 



Z .mandihidaris Mels. ib. 



Middle and Western States, rare. I procured a fine series of this species at 

 Fort Snelling, Minnesota. The elytral vitta is slightly abbreviated at base and 

 apex; it is sometimes very broad. The under surface is sometimes uniform tes- 



