246 THE ENTOMOLOGIST. 



the specimens iu the Kirbyan collection, is a female taken in 

 the Isle of Portland by Mr. Dale. I have received both 

 sexes from Prof Schenck from Nassau, and I find the sexes, 

 as described by Mr. Kirby, to be correctly united : it will be 

 seen, on a reference to the ' Monographia,' that Mr. Kirby 

 had no positive evidence of their affinity. 



The female most closely resembles that of H. rubicundus, 

 but the legs are all black, with the tarsi more or less ferrugi- 

 nous ; H. rubicundus has fulvous pubescence on the thorax, 

 whilst H. quadricinctus is thinly covered with cinereous. 



The male is like that sex of H. rubicundus, but is at once 

 known from it by its mandibles being very broadly dilated at 

 their base, and, when viewed sideways, are angulated in 

 shape, and project downwards in a remarkable manner ; the 

 abdomen is so closely and strongly punctured as to have a 

 semi-opaque appearance ; the bands are white and rarely 

 interrupted, except that on the apical marginal of the basal 

 segment. 



This species will probably be found in the neighbourhood 

 of Ipswich: Barham and Little Blakenham are only a few 

 miles distant. It is widely distributed on the Continent ; 

 1 possess examples from the South of France, Nassau, Dal- 

 matia, and Sicily, and there are specimens in the British 

 Museum from Italy ; it is also found in North America. 



3. Haltctus maculatus. 



Halictus maculatus. Smith, Brit. Bees, p. 29, female ; Ny- 

 land. Revis. Apum. Boreal, p. 241. 



Halictus interruptus, St. Farg. Hijm. ii. 270, not of Panzer. 



St. Fargeau has described this insect as li. interruptus, 

 and a i^w pages further on he describes the H. interruptus of 

 Panzer : the name he gave to this insect cannot stand. Prof. 

 Schenck thinks Panzer's insect may be a variety of the male 

 of H. maculatus : should this be established my name must 

 fall, and H. interruptus must be substituted. I give a de- 

 scription of the male, for the purpose of identification, should 

 it be taken. 



Male. Length 3|- lines. Black, with a short white line of 

 pubescence on each side of the apical margins of the first 

 and three following segments of the abdomen. The head 

 and thorax closely punctured ; the flagellum fulvous beneath ; 



