(iml Species of Cohoptirn. ;{47 



angiistioribiis ; oorporo infra castiineo ; ]x?dibus antciinisciue, 

 clava ni;;ni excopta, subliitescentibus ; oculis valilo ]>r()iiiiiiulis. 

 Lonj;. 1 k lin. 



Ilab. Ceylon. 



Allied to I'j. drhisa, Pasc. (.lourn. of Eiitom. i. p. 53, iVpril 

 I860, pi. 2. Hg. o), luit, iii((r tiliii, witli :i narrower protliorax, 

 not tlentieukte at the side*!, and the two ])osterior angles not 

 omarginate. 



Elacatis lati'coUin. 



I'J. rufo-testacca fusco-varicgata, supra pilosula ; oculis minus pro- 

 minulis ; antennis articulis tcrtio ad octavura gradatim brevioribus, 

 olava fuscesconte ; prothoraoe sat fortiter trausvcrso, latoribus 

 subparallolis, angulis postieis obliijuis ; elytris prothoraco baud 

 latioribus, postice gradatim angustioribus, pallide fuscis, maeulis 

 rufo-tcstaceis, nonnidlis indeterminatis, notatis ; corpore intra 

 fusccsccnte ; podil)Us flavo-testaceis ; fenioribus in medio tibiisque 

 fuscis. Long. ',i lin. 



Ilab. Batcliian. 



A larger and darker species than the last, the fusion of the 

 browner shades leaving paler spots at intervals ; the broad 

 prothorax, its sides nearly straight and its posterior angles 

 neither emarginate nor rounded, differentiates it from E. de- 

 lufta, as well as from the preceding. Elacatis was originally, 

 but hesitatingly, referred by me to Melandryidaj, on account 

 of its hetcromerous tarsi and pronotum marked oif from the 

 flanks of the prothorax by a narrow ridge. Dr. Lecontc, on 

 his recent examination of my collection, at once recognized it 

 as his Othniuft^ a genus founded on a species taken in Nebraska, 

 near the Rocky Mountains ; disregarding its hetcromerous 

 tarsi, which, he considers, are perhaps peculiar to the males*, 

 he places it near Cryptophagidajf, as a distinct family. In 

 this I agree with him. The" difficulty occurs, as my name is 

 the oldest, whether the name of the family should be changed; 

 but the adoption of Othniidaj will have the advantage of con- 

 necting the two names given to a highly specialized form 

 found in such dissimilar faunistic regions as North America 

 and the Indian Islands. 



• In E. delusa, which was found by Mr. Wallace in Borneo and New 

 Guinea, both sexes are heteronierous.' From a note attached to a speci- 

 men of this species in the British Museum, it would seem to be very like 

 one from Mexico, named (but not, that I am aware of, described) by 

 Dr. Horn of Philadelpliia. 



t It is worth noting that Tetratotna, to whicli I compared Ulacati.'^, is, 

 together with Triplax and Tritoma, referred by I>r. Bedtonbacher (Faan. 

 Aust.) to this familv. 



26* 



