31 



»nahogany colour, with ,i ciouhlc scries ui juint turts, n<»i nuintrous nur 

 regularly arranged, which do not reach the apex ; there nre a \cry feu scat- 

 tered punctures besides in the side : legs mahogany-colour. 



102. CoLYMUKTLh (Ai.ABVs) PH.KoPTKRis Kirbv. Length of l)v)dy 

 .>/''4 "-3K' 'J"cs. Two specimens taken in l^it. 54^. 



Body nearly elliptical, rather de])ressed, smooth, very black, glossy. 

 Head with a pair of transverse obscure red spots in the vertex ; mouth and 

 antcnn.T: testaceous : posterior series of the prothor; x thickly punctured, 

 and discontinuous in the middle: elytra brown, a little paler at the base 

 and side: epiplcum yellow: sculpture of the elytra like that oi C. Scrni- 

 ftiiTiitatus, but fewer punctures in the side: legs femiginuns : body under- 

 neath longitudinally scratched. This species appears to be the American 

 representative of C. paludosus {Dytiscus p,)litus Mnrsh), whii.h it nearly 

 resembles, but the anterior part of the front is black, and not yellow as in 

 that sjK'cies ; and the ])rolhora.\ is wholly black, without a broad rufous 

 margin. [Placed with a mark of interrogation as a synon\m of Ai^abus 

 obliieratns Ixc, in l,eContc"s 1.1st, p. 17.] 



[71.] 103. CoiAMiJKihs (.V'-.AKfs) HiiAkiis, Kirby. J'latc v.. fig. 6. 

 Ix'ngth of body 33^ lines. A single specimen taken in I.at. 54'. 



Body oval, smooth, black, less glossy. Mead with a pair of verti( a! 

 red crescents: mouth, antennx and palpi ferruginous: maxillary palpi with 

 tiiC last joint black : prothorax longitudinally acudiictod, with the bead of 

 the lateral margin rufous: elytra at the base longitudinally, at the ajiex 

 transversely, acuducted: fore-breast and legs piceo-rufous. 



104. CoLV.MiiETKs Rkikulatus. Klrbx. Length of body y/^ lines. 

 Three specimens taken in Lai. 65''. 



Body oblong, black, gloss obscured from its being covered as it were 

 with a web of the finest net work, .sculptured as if with the point of a 

 needle. Head with a pair of round red vertical sjjots: i^rothorax with a 

 yellow mesal band and lateral margin : elytra dusky-cinereous, with the side 

 yellowish: legs ferruginous. [Not mentioned in either LeConte's or 

 >felsheimers Catalogues.] 



105. CoLVMBETES PiciPEs, Kirby. — Length of body 4>^ lines. Two 

 specimens taken, one in Lat. 54°, the other in Lat. 65'. 



[72.] Body oval, black, above slightly bronzed, not glossy, covered 

 above and below like the preceding species with, as it were, a web of net- 

 work ; but the reticulations are more minute. Upper-lip, palpi and antennae 

 fetTuginous ; a pair of oval, minute, obscure red spots mark the vertex : 



