INSECTS-COLEOPTERA. 
61 
One specimen, found at San Francisco by Mr. Child. The whitish fascia is slightly elevated, 
and is directed slightly forwards from the margin to the suture. 
0. decussatum, piceum nitidum parce puhescens, capite dense, thorace fortius punctato, lati- 
tudine vix breviore, lateribus rotundatis, antice posticeque angustato, antice transversim 
impresso, linea dorsali sublaevi, elytris parce fortiter punctatis, versus apicem sensim laevihus, 
ad basin pallidioribus, fascia postice obliqua ante medium, alteraque antice tendente pone 
medium albicantibus subelevatis ornatis. Long. *25. 
One specimen, Sacramento, California, Mr. Wittick. The two fasciae, with those of the 
opposite side, produce a figure nearly like the diagonals of a square ; the anterior one is 
suddenly angulated near the margin. 
Crossidius Lee. 
CJ hirtipes, ater, thorace confertim punctato latitudine breviore, lateribus obtuse armatis, 
ad basin marginato, disco utrinque pone medium subfoveato ; elytris confertim subtilius punc¬ 
tatis, fulvis sutura basique nigromarginatis, abdomine sanguineo ad basin obscuro ; subtus 
parcius longe pilosus, tibiis intus dense pilosis. Long. ‘5. 
Lee. Proc. Acad. Nat. Sc. 7, 18. 
One specimen, found by Dr. Cooper on the journey from Wenass river to Fort Colville. The 
palpi and antennae are destroyed; it should possibly form a separate genus, as the mandibles 
are emarginate at tip, as in Crossidius, while the thorax, as in Purpuricenus, is obtusely armed 
at the sides. The upper surface may have been hairy, but the hair has been entirely removed ; 
the elevated lines are hardly visible. 
The genus Crossidius was constructed by me upon a pale yellow hairy insect from San Diego, 
having the antennae 12-jointed, the mandibles emarginate, the thorax rounded, the elytra not 
truncate, and the body very hairy. 
Rosalia Serv. 
R. funebris, supra holosericea, capite atro, thorace cinereo, macula magna ovali dorsali alter¬ 
aque utrinque minore nigris, 4-tuberculato ; scutello cinereo, elytris atris, fascia ante medium, 
altera pone dodrantem, margineque apicali cinereis, punctoque sublaterali pone medium saepe 
ornatis; subtus cinereus holosericeus, antennis cinereo-annulatis. Long. 1-08—1‘32. Tab. 
II, fig. 11. 
Motscbulsky, Bull. Mosc. 1845, 1, 87, tab. 2, fig. 8; Mann. ibid. 1852. 
Rosalia alpina (err. typog.) Lee. Journ. Acad. Nat. Sc. 2d ser. 2. 
Oregon, at the Dalles, Dr. Suckley, and at Steilacoom, Mr. Gribbs. Found at Sitkha, according 
to Motscbulsky. Varies with the lateral whitish dot of the elytra wanting; also, with the pos¬ 
terior fascia interrupted at the suture, and not extending to the margin ; the fasciae vary much 
in breadth, and are sometimes dilated at the suture. 
Clytus Fabr. 
G. conjunctus, niger, thorace latitudine paulo breviore, margine antico flavo, dorso longitudi- 
naliter elevato, et carinulis quatuor vel quinque transversis notato ; elytris annulo basali 
interrupto ad suturam extendente, fasciisque duabus posticis linea suturali connexis pallide 
