A.& . 



■ Insects inhabiting *! 



closeh 11 



Coleoptera,* one a Stcnns, and the otlier Biabrotica soror 

 all of which were probably drowned from haviiifr acci<lon 

 fallen into the lake. In the collection, however, txvo i 

 ac^uatic beetles occurred, one, Laccophdu- ^I'njw n^ L. r,, n I 

 cidan insect, and the other, Berosus puiai'i/^.s^nnn^ [j\- , ,, i 

 bcr of the family llydrophilida^. Thoc |u<>l,,,l,|\ h\ . d u 

 brine not only in the adult, but also in the l:irv>il -i.iir. 



iSalda interstitialis Say, iiho odQurred, and twootlirr :i.| 

 hemiptera: a new species of Hygrotrechus and Cnn\j. w 

 arejlescribed by Mr. Uhler farther on. 



'" nypus, sp. — The larvse and pupiB of a specie^ <>1' 'r.ni 

 Lusorsubirenus), wereabun- i. 



The body of the larva is 

 iidrical, prradually ta])ering 

 The head is long and nar- 

 widc, and one half as long i 

 segment. There are no rn- 

 :e or maxillaj ^ " 



c in front of the het 

 , untoothed : it is s 

 die head, and is su 



post, 



Salem, Mass. The 





, the mouth. Tlu , ., . 



behind the middle of the head : the anten-.r ymv .nv tlu- mu, slier 

 and touch the hinder pair. A few hair- :ire MMrt, ro.l n\ er the 

 head. There arc no prothoracic or anal teet. t.nd no :n J bris- 

 tles, or appendages of any kind, not cvcmi the irw l.>n- luurs 

 observed in the Salem species. It is wiiite and -^o -d ;in inch 

 in ^length. Fig. 1, larva; 2, front and siil- view ot the iiuj-a. 



The pupa is rather slender, with the abdomen .vlighth flat- 

 tened, and rather broad, being nearly as wide as the tliorax. 

 The wings and ends of the third pair of feet reach to the ])os- 

 terior edge of the second abdominal se,cruient. The antenna 

 are laid in between the win^^s and the second pair of feet, disap- 

 pearing under the middle ^\' the front edge of the wing. The 

 third jKur of feet are concealed bv the wines, the tips of the 

 tar.i (mly being in siLdit: thev are even with the end of the 

 wiuir.s. The second pair ot teet are entirely concealed, their 

 tips not appearing, while the first pair are entirely in sight, their 

 tips reaching nearly as far as those of the third i>air. On the 

 * The Coleoptera were obligingly determined by Dr. Horn. 



