Dec., 1885.] history society of Wisconsin. 
51 
OYKINID7E. 
Whs. 
No. 
Araer. 
No. 
DINETJTUS, Mac L. 
330. 
1385. 
emargimilus, Say. 
331. 
1389. 
assimilis , Aube. 
GYRINTJS, Linn. 
332. 
1390. 
con finis, Lee.^ 
333. 
1398. 
r entrails, Kirby. 
334. 
1399. 
aquiris , Lee. 
335. 
1400. 
maculiventris, Lee. 
336. 
1408. 
lugens, Lee. 
337. 
1409. 
analis, Say. 
338. 
1412. 
minutus, Fab. 
the lake and ponds. 
tions as the preceding. 
HYDKOPHILIDJE. 
HELOPPIORUS, Fabr. 
339. 1418. lacuslris, Lee.Pare. In ponds and m the lake. 
340. 1423. lineatus, Say.Abundant in ponds in spring. Also 
found clinging to bits of wood, 
etc., thrown on the sand by the 
lake waves. 
341. 1424. inquinatus, Mannh — Same as the preceding. 
342. 1425. tuberculalus, Gyll.Very rare. Lake shore in spring. 
HYDROCHUS, Leach. 
343. 1434. squamifer, Lee. Same as 1423. 
IIYDROPHILUS, Geoff. 
344. 1449. triangularis, Say .In the lake and in ponds, i ore 
abundant in the former. 
TROPISTERNUS, Sol. 
345. 1450. nimbatus , Say.In ponds and in the lake. Common. 
346. 1455. glaber , PIb.The same as the preceding. 
347. 1456. mixtus, Lee.The same as the preceding. 
HYDROCHARIS, Latr. 
348. 1401. oblusatus, Say.Appears very early m spring on the 
waV e-moistened sand of the lake 
shore. Common. 
BEROSTJS, Leach. 
— -- o ^ 
summer in all ponds. 
349. 
1470. 
subsignatus, Lee. 
350. 
1472. 
peregrinus, Hb. 
351. 
1476. 
infuscatus, Lee. 
352. 
1477. 
strialus, Say. 
