262 



NEW VOKK STATl-: MLSEUM 



most snout beetles, extends almost dircctl)- forward. The male is larj^^er 

 and instead of a slender beak, has enormously developed mandibles, which 

 are probably of considerable service in excavating the bark preparatory to 



egg laying and also in the fierce bat- 

 tles individuals of this sex are said to 

 wage. This species is generally dis- 

 tributed in New York State, though 

 rarcl\- met with in numbers, probably 

 •cause of its retiring habits. This 



,^^ insect may be easily recognized by 



f ^W T\ /'^*^**ffifS%==^^ reference to the accompau) ing illus- 



'^ llliil ^> JJII tration. 



Description, fhc lar\a and pupa 

 have been described by Dr Riley as 

 follows : 



Fig.<5 Northern hrcnthi.in. male :md ti-ni;ilc, enlarged (oriBiiial) , I .1 ■ 1 



Larva. Length, .55-75 incii ; 

 diameter in middle of bod}-, .05 inch. Bod)' almost straight, cylindrical, 

 12 jointed, wiih a few faint liairs only on prothorax and around anus; 

 thoracic joints short, bent a little forward, swollen and broadly and deeply 

 wrinkled, with two especially prominent swellings on top of joints 2 

 and 3, converging towards heatl, and having each a granulated rufous 

 spot ; the other joints with al)out three dorsal transverse wrinkles ; 

 joints 5-9 subequal, as long as 1-3 together, twice as long as 4 ; 10-12 

 diminishing in length, slightly swollen, the anus retracted ; six very 

 small, 3-jointed thoracic legs, the terminal joint being a mere bristle ; 

 stigmata quite distinct and brown, the first pair much the largest, between 

 the fold of idints 2 and 3; the oihers on anterior fifth of joints 4-1 i, 

 the last pair more dorsal than the rest. Head pale yellow, darker around 

 mouth; rounded, more or less bent oxer the breast, with sparse, stiff, 

 pale hairs springing from ele\aleil ])oints ; ocelli, none; antennae not 

 visible, unless a dusky prominence lying close between mandibles and 

 maxillae be called such ; labium small, with two depressions and other 

 inequalities, the margins slightly angular, allowing the jaws to closely fit 

 around it ; jaws stout, triangular, the inner margin produced at middle into 

 a larger and smaller tooth, and with a slight excavation near tip ; maxillae 

 long, with but a short, horny cardinal piece; the palpi apparently 2 jointed 

 and with difficult)' resolved, on account of three or four other ])rominences 



