ABT. 6 HALTCTINE BEES FROM SIBERIA COCKERELL 3 



well defined ; posterior truncation dullish, and with thin reddish 

 hair, the lateral margins very sharply defined ; tegulae dark rufous ; 

 wings dusky, stigma and nervures dusky amber; basal nervure close 

 to nervulus; second cubital cell very broad, receiving recurrent 

 nervure well before end; outer intercubitus and recurrent weakened; 

 legs with pale reddish hair, becoming golden on inner side of hind 

 tarsi ; hind spur pectinate, with three spines ; abdomen broad, highly 

 polished, minutely punctured, hind margins of segments rather ob- 

 scurely brown; thin inconspicuous hair patches at lateral bases of 

 second and third segments. 



Okeanskaja, Siberia, August 5, 1 female (Cockerell). 



Type.— Cs^t. No. 27338, U.S.N.M. 



Superficially very closely resembles H. inteDniptus Panzer, of 

 Europe, but certainly distinct by the lack of a transverse groove on 

 clypeus, and the much better defined and more distinctly sculptured 

 area of metathorax. The posterior truncation of metathorax is 

 sparsely and weakly punctured, with a little irregular striation at 

 the extreme top; in H. interruptus it is conspicuously striate or 

 plicate all over. The hind tibial spur of H. interruptus is coarsely 

 pectinate, much as in the Siberian species. 



Named after Dr. A. Moltrecht, the learned lepidopterist of Vlad- 

 ivostok. 



HALICTUS KRALOFFI, new species 



Female. — Length about 7 nmi., anterior wing 5.5 mm.; similar 

 to H. moUrechti, but smaller, and differing also as follows: Face 

 narrower; disk of mesothorax more closely punctured, and with a 

 distinct median groove ; area of metathorax more closely sculptrued, 

 the rugae variously incomplete and forming an irregular network; 

 second cubial cell narrower; abdomen narrower, basal hair-band 

 white and complete at least on second segment; hind spur pectinate 

 Avith at least five rather short teeth; margin of second abdominal 

 segment more conspicuously pale; hair on inner side of hind tarsi 

 paler, less golden; hair fringe of tubercles white (tinged with red- 

 dish in H. moltechti) . The tegulae are rufous. 



Kongaus, Siberia, August, 1 female (Cockerell). 



Type.—Q,9X. No. 27339, U.S.N.M. 



Certainly verj' close to H. moltrechti, but surely a distinct species. 

 There is a very close general resemblance to H. opacus Perez, 

 from Corsica, but that species differs by the strongly reddened wings, 

 much broader second cubital cell, and closely and very finely punc- 

 tured apical part of first abdominal segment. 



Named after Nicolai Petroivich Kraloff, of the Vladivostok Mu- 

 seum, who has collected many bees in the Maritime Province. 



