AMARIN^E 313 



sispina, parviceps, ccelebs, brunnipes and protensa, as well as the 

 purely Alaskan littoralis, are unknown to me and have therefore 

 not been included in the above statement. 



I am rather uncertain as to the correct position of ebenina in 

 the series; the two basal joints of the antennae are obscure rufous, 

 the third more piceous than rufous, but not black like the succeed- 

 ing joints, indicating perhaps an intermediate stage between those 

 species having two and those with three rufous basal joints. How- 

 ever, ebenina is so isolated in its very convex form and rather dull, 

 intensely black integuments, that it should be recognized easily; 

 it does not agree with the description of protensa as given by Put- 

 zeys. The species described above under the name castalia, is 

 peculiarly brilliant in coloration. I have only a single specimen 

 that can reasonably be assigned to subpunctata Lee., and it has never 

 been compared directly with the type; the punctures are very min- 

 ute, as they are also in ceneolucens, but on the more polished surface 

 of the latter, the strial intervals have a peculiarly crumpled or sub- 

 nodular aspect; subpunctata is broader, more oblong and less oval 

 than ceneoktcens, if I have identified it correctly as seems probable. 



In some species, such as turbata and piceola, the posterior super- 

 ciliary puncture becomes very small when compared with the an- 

 terior; it is easy to conceive that it occasionally may become ves- 

 tigial, and this may be the condition in those European species of 

 the subfamily which are said to have but one supraorbital seta, 

 although, according to Hayward (1. c., p. 15), it is the anterior 

 puncture that is wanting; he also refers to one species which is 

 said to lack both setae. I think that in these instances closer obser- 

 vation would possibly reveal at least traces of the missing puncture, 

 and the case is probably not exactly like that observed in Micra- 

 topus fusciceps, and presumably also in the closely allied Blemus 

 cenescens Lee., referred to on p. 3 of the present work. 



Triaena Lee. 



While closely allied to Amara, as shown by general characters, 

 such as outline of the prothorax, antennal coloration, prosternal 

 structure of the male and pubescent hind tibiae in that sex, as well 

 as the presence of a single puncture at each side of the abdominal 

 apex in the male and two in the female, I am disposed to consider 



