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COLEOPTERA 
Hydrochus Leach. 
scabratus Muls. 
eallosus Lec. 
foveatus Hald. 
rugosus Muls. 
insequalis Lec. 
excavatus Lec. 
subeupreus Rand. 
variolatus Lec. 
squamifer Lec. 
impressus Zimm. 
vagus Lec. 
simplex Lec. 
Epimetopus Lac. 
1566. costatus Гес. 
Ochthebius Leach. 
1567. puncticollis Lec. 
1568. diseretus Lec. 
1569. rectus Lec. 
1570. cribricollis Lec. 
1571. attritus Lec. 
5 simplex Lec. 
3. tuberculatus Lec. 
nitidus Lec. 
5. levipennis Lec. 
6. foveicollis Lec. 
1577. benefossus Lec. 
1578. sculptus Lec. 
1579. Holmbergi Мал. 
1580. lineatus Lec. 
1581. interruptus Lec. - 
m 
T 
- 
2 
7 
7 
Hydraena Kug. 
1582. pennsylvanica .К768. 
1583. punctata Lec. | 
1584. marginicollis. Kies. 
Hydrophilus Geoff. 
Tropisternus Sol. 
1585. ovatus С. Ф Н. 
1586. triangularis Say. 
1587. insularis Lap. 
1588. limbalis Lec. 
1589. nimbatus Say. 
1590. mixtus Lec. 
1591. glaber Hbst. 
1592. californicus Lec. 
OF 
NORTH AMERICA. 
1593. subleevis Lec. 
1594. elliptieus Lec. 
' 1595. striolatus Lec. 
Hydrocharis Lat. 
1596. glaucus Lec. 
| 1597. obtusatus Say. 
1598. castus Say. 
Berosus Leach. 
1599. maculosus Mann. 
1600. punctatissimus Lec. 
1601. Salvini Sharp. 
1602. miles Lec. 
1603. pugnax Lec. 
1604. emarginatus Horn. 
1605. styliferus Horn. 
1606.. aculeatus Lec. 
1607. subsignatus Lec. 
1608. pantherinus Lec. 
| 1609. peregrinus Hbst. 
1610. immaculatus тт. 
1611. exilis Lec. 
i 1612. exiguus Say. 
1613. infuscatus Lec. 
| 1614. striatus Say. 
1615. rugulosus Horn. 
Derallus Sharp. 
1616. altus Lec. 
Cheetarthria Steph. 
1617. atra Lec. 
1618. nigrella Lec. 
1619. pallida Lec. 
Limnebius Leach. 
Limnocharis Horn. 
1620. piceus Zorn. 
Laccobius Er. 
1621. agilis Rand. 
1622. ellipticus Lec. 
Philhydrus Sol. 
1623. normatus Lec. 
1624. carinatus Lec. 
1625. fueatus Horn. 

COLEOPTERA OF 
1626. nebulosus Say. 
1627. pectoralis Lec. 
1628. cristatus. Lec. 
1629. bifidus Lec. 
1630. ochraceus Mels. 
1631. reflexipennis Zimm. 
angustulus Casey. 
1632. consors Lec. 
1633. cinctus Say. 
1634. diffusus Lec. 
1635. fuseus Mots. 
1036. perplexus Lec. 
1637. latiusculus Mots. 
1638. obtusiuseulus Mots. 
Hydrocombus Sharp. 
1639. maculicollis Muls. 
1640. punctatostriatus Hor». 
1641. imbellis Lec. 
? dorsalis Mots. 
1642. fimbriatus Melsh. 
1643. lacustris Lec. 
1644. rotundatus Say. 
Hydrobius Leach. 
1645. tessellatus 24607. 
1646. seabrosus Horn. 
1647. latus Horn. 
1648. tumidus Lec. 
1649. cuspidatus Lec. 
1650. castaneus Lec. 
1651. feminalis Lec. 
1652. globosus Say. 
melenus Germ. 
1653. fuscipes Linn. 
1654. rufiventris Horn. 
1655. infuseatus Mots. 
1656. |. digestus Lec. 
1657.. subcupreus Say. 
1658. despectus Lec. 
1659.. dissimilis Horn. 
1660. suturalis Lec. 
Helopeltis Horn. 
1661. larvalis Horn. 
NORTH AMERICA. 
Sphaeridium Fab. 
1662. scarabeeoides Linn. 
Dactylosternum Woll. 
1663. abdominale Fab. 
Cercyon Leach. 
1664. pubescens Lec. 
1665. fimbriatum Mann. 
1666. flavipes Fad. 
1667. nigricolle Say. 
1668. lunigerum Mann. 
1669. limbatum Mann. 
1670. fulvipenne Mann. 
1671.] navieulare Zamm. 
1672. melanocephalum Linn. 
1673. apicale Say. 
1674. ` centromaculatum Sturm. 
1675./ prsetextatum Say. 
1676. adumbratum Mann. 
1677. ocellatum Say. 
1678. pygmeeum 10. 
1679. ў unipunctatum Linn. 
1680. f anale Payk. 
1681. posticatum Mann. 
1682. nanum Melsh. 
1683. minuseulum Melsh. 
1684. capillatum Lec. à 
Phoenonotum Sharp. 
1685. extriatum Say. 
1686. semiglobosum Zimm. 
Cyclonotum Er. 
1687. cacti Lec. 
1688. palmarum $2. 
Megasternum Muls. 
1689. costatum Гес. 
Cryptopleurum Muls. 
1690. | vagans Lec. 
PLATYPSYLLID Ж. 
Platypsylla Ritsema. 
1691. савбогіе Ritsema. 

