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Un des symboles suivants apparaltra sur la dernlAre image de cheque microfiche, selon le cas: le symbole -^ signifie "A SUIVRE", le symbols y signifie "FIN". IMaps, plates, charts, etc., may be filmed at different reduction ratios. Those too large to be entirely included in one exposure are filmed beginning in the upper left hand corner, left to right and top to bottom, as many frames as required. The fciiowing diagrams illustrate the method: Les cartas, planches, tableaux, etc., peuvent Atre filmte A des taux de rAduction diffArents. Lorsque le document est trop grand pour Atre reproduit en un seul clichA, 11 est filmA A partir de Tangle supArieur gauche, de gauche A droite, et de haut en has, en prenant le nombre d'images nAcessaire. Les diagrammes suivants iilustrent la mAthode. ► 1 2 3 1 2 3 4 5 6 I I i LETTEE /; ADDBESSBD TO MR. JOACHIM BARRANDE, ON THE ROCKS OF THE QTTlilBBC GROUP AT POINT LEVIS. BY SIR W. B. LOGAN. Poidria!: PRINTED BY JOHN LOVBLL, ST. NICHOLAS STREET. 1863. ;5r^ ^ \ "F- •-^>':^^.^ V^''^ N I nniij ¥1} ■)M ;/>[•: I LETTER ▲DDRXSSED TO MR. JOACHIM BARRANDE, 1 '■■ ON THE EOCKS OF THE QUEBEC GROUP AT I*.' *' ■s^^?-,- POINT LEVIS, BY SIR W. E. LOGAN PRINTED BY JOHN LOVELL, ST. NICHOLAS STREET. 1863. ! HHIHH I A I'.l ill m ''\.y la ■;'-; 1* \. .'■■if.n- ••I!''',. ;.•!■' •(*.■ 8.- I A?' POINT* LEVIS. '\ ' ' ' '^ ' ' ' Montreal, 15th March, 1868. Mt Dkar Mr. Barrandb, — Mr. Jules Marcou has addressed to you a letter dated the 2nd August last, on the Taconic rocks ofVer* mont and Canada, in which ho says, on page 10, ** I was able this " year to follow out aud trace evary bed and layer on the whole " contour of Poiut L^vis, from the Qrand Trunk Terminus to In- " dian Cove ; and as Point L^vis is a point of land surrounded " by high cliffs, I feel satisfied that there is no repetition of beds^ " and no synclinal axis ; and that tha few foldings of the strata " at Ferry's cliff are mere accident, confined to a distance of a few *' feet, and are without any effect upon the whole mass of strata^ " but are what we call in French structure ployie (contorted " strata)." On page 14 he says : '* Fearing that my first unsuc* " cessful attempt last year to understand the explanation of Messrs. " Logan and Billings might be my own fault, I tried very hard " this year again, when at Point L6vis, but with no better success t *' and I left the Point fully convinced that the fossils described by " Mr. Billings, and the so-called outcrops. A', A', A*, &c., of " Mr. Logan, were collected and observed in a very careless way, " without regard to stratigraphy, by irresponsible collectorsi or " by unskilful practical geologists." I have neither time nor inclination for controversial geology. I have never criticised 'any of Mr. Marcou's remarks on rocks^in Canada, or out of it, nor have I suggested any such criticisms to others ; but a charge of carelessness on the part of public oflScers In the discharge of their duties appears to me, on the present occasion, to require a few words of reply, lest you and othersjmight suppose the accusation to have some foundation. It is due to Mr. Marcou to give him credit for the very great care he claims, as I am persuaded he would not have ventured so unreserved and con- demnatory a contradiction of what has been stated on the part of the Survey, without having exhausted all his skill on his own in- vestigation. The only critical remark therefore left for me to make, is that this distinguished stratigraphist has been very unfor- tunate ; and that having missed the mt&n feature of the conspicu- ously marked structure he so carefully searched for, it is not surprising that be should find a difficulty in understanding a statement connected with it. In 1854 and 1856, a considerable time was expended by Mr. Richardson, one of my assistants, and myself, in ascertaining by measurement the position and extent of all the exposures of the limestone conglomerates which characterize Point L^vis. The result of this work was exhibited by me to Mr. Marcou, at the office of the Survey, in 1861, on an unpublished manuscript map, on a scale of six inches i6 one mile, showing nearly all the known exposures of rocks of the Quebec group for about twenty miles below, twenty miles above, and nearly twenty miles to the souUi- eastward of QuebeCo This map represents an area of 800 square miles, on which all the exposures are laid down by admeasure- ments, comprising the work of one member of the Survey for two seasons, and of another for one season. The measurements at Point L^vis I have recently re-protracted on the same scale, with a view of completely separating what is exposed to view, from what is inferred ; and a plan reduced from this to one hal^ by photo- graphy, accompanies the present communication. The topogra- phical as well as the geological features are delineated ^rom the measurements of the Survey. On this plan, the heavy black bands represent the known ex- posures of the limestone conglomerates ; the dotted lines between different exposures represent their supposed connection. Some of the geographical undulations are shown by what I have desig- nated the Coast Ridge, and the North, Middle and South Ridges. The main feature of the Coast Ridge is a thick band of limestone conglomerate extending in a hill and precipice, which overlook the beach froni Patton's wharf to the neighborhood of the Lower Ferry; beyond which it gives place to the cliff immediately behind the houses near the Lower, Middle and Upper Ferries. The North Ridge is a hill which rises up from and runs parallel with the road passing in front of the Temperance Monument or Cross ; and attains its greatest height in a band of limestone conglome- rate about 300 yards southeastward. The part of this ridge nearest the road probably constitutes Mr. Marcou's Cross Hill. The Middle Ridge it, I presume, Mr. Maroou't Parochial Hill. It in- cludes Quay's quarry, or the Redoute, and crossing the St. Joseph Ohurch road (Route de TEglise), extends for about a mile to the southwestward, with a somewhat broad depression southward from the Burying-ground. Where Mr. MarcouN Middle Hill may be situated, I am not quite sure, but suppose it to be the upper part of my North Ridge, as the extension of this seems to be the only hill between the Temperance Monument and Quay's quarry. The South Ridge crosses the St. Joseph Ohurch road about half a mile to the southeastward of the Middle Ridge. The limestone conglomerates, as you are probably aware, consist of beds of yellow-weathering magnesian limestone, in which, as a base, are imbedded masses of pure compact limestone, of colors varying from yellowish-white, through gray and brownish, to nearly black. These masses are generally of a sub-spherical or sub-elliptical form, looking like boulders, and many of them may probably be such ; but beds of a limestone almost precisely similar to them in character appear occasionally to run in an irre- gular manner in the conglomerate bands, presenting the aspect of original sediments. The yellow-weathering matrix is often arena- ceous, the white silicious grains sometimes attaining a quarter of an inch in diameter. The bands of conglomerate are separated from one another by greenish and blackish slates, which in many places, are interstratified with strong ^'cUow-weathering gray and black calcareo-magnesian slates, and occasionally with yellow- weathering sandstones. In a few places red slates are intermingled with the others. Southeastward from the St. Lawrence, the limestone conglome- rates of Point L^vis are distributed over a breadth of more than two miles. In the North Ridge there are four bands, numbered 1, 2, 3, 4, on the map ; on which is represented, in addition, a long lenticular bed (4&) subordinate to 4, but separated from it by slate. The lenticular bed is composed of brown -weathering mag. nesian limestone, but appears to contain few or no enclosed masses of the pure limestone. The bands 3 and 4 are, respectively, A' and A' of a former description. You will perceive that northeast- wardly they converge a little ; and at the time of that description, it was not determined whether they were to be considered two distinct beds, or one a repetition of the other. They are now taken to be two distinct beds. Followed northeastwardly, they appear to be dislocated by a fault near the St. Joseph Church road ; but beyond this they are easily traceable around the extrem- ! • tj of a trough, with a deep oiiannel worn between them in the slate. After passing the axis of the synclinal, the band 4 comes to the limestone of Oaay's quarry, which is nothing more than a large lenticular mass of pure limestone, subordinate to the band. Southwestward of the quarry, both bands are seen again crossing the St. Joseph Ghurch road, and again coming against the trans- verse fault This fault appears to show an upthrow on its south- west side ; since on that side the opposite outcrops of the trough are thrown towards the centre. Continuing to trace the outcrops on the southern side of the trough, that of band 4 gradually thins, and disappears at P, in less than a furlong ; while that of the band 3 becomes more con- spicuous, and shows a great development as it folds over an anti- clinal axis just eastward of the eastern boundary of the fief St. Anne. From this it returns towards the Church road, but be- comes concealed about fifty yards before reaching it, after again shewing the effect of the fault, in a much smaller horizontal dis- placement than before. On the northeast side of the antielinal axis, on both sides of the fault, the dip is to the southeastward, and is therefore overturned ; but from the character of the dis- placement it is evident that beneath the surface, on the northeast side of the fault, the inversion must be compensated for by a ohange to the northwest in the slope. A little above the outcrop of band 4, at P, there occurs a layer of sandstone, which is traceable on the fief Ste. Aune over the an- ticlinal axis ; and a sandstone approaches the outcrop of band 3 at A' . In the description of 1860, this was supposed to show that possibly the stratigraphical place of the band 4 might gradually approach the band 3, and finally merge into it ; but finding farther on, along the outcrops, an exposure of conglomerate at «, which will answer for band 4, it is now conceived that there may be two layers of sandstone, one above, and the other below the stratigraphical place of band 4 ; and though this band thins to nothing at P, it may commence again in its relative place farther on. From the neighborhood of the Temperance Monument the outcrop of b':nd 2 is traceable northeastward, running not quite parallel with 3, to the fault, and thence across the St. Joseph Church road to the main road. It traverses this obliquely, a little beyond the church, and its turn upon the synclinal axis is seen on the north side of the road, about 400 yards beyond* In the lime- stone of Quay's quarry there is a small notch-like turn, which serves to augment somewhat its apparent volume ; a corresponding twist 18 more conspionoiu in the outorop of band 8, and in band 2 it aMnmea a still further prominence at y. These sucoesaive forms in- dicate a plut in the stratification, commencing at the quarry, and rapidly augmenting northeastwardly in the space of 350 yards; The importance of its e£fect on the distribution of the strata would, at this rate of increase, soon become considerable, and it serf es to show some of the complications of the neighborhood. Without going into detail, it is evident from the map that the Middle Ridge is an anticlinal form, and that the Sonth Ridge is another. On this, the exposures of the bands 2 and 8 conspicuous- ly mark the turn on the axis, aa they do in the synclinal between the ridges. It will be perceived that between the synclinal and anticlinal axes, the outcrop of band 2 is represented as showing a very sharp twist. The evidence of this is not quite satisfactory, and the apparent arrangement may possibly be due only to a swelling in the volume of the band, with parts obscured by drift. The Temperance Monument stands on band 1, with which are associated some layers of sandstone. This band is easily traced to the northeastward, across the fief Ste. Anne ; bnt between that and the fault, it becomes broken down and obscured, and it will require farther investigation. Nothing like it, nor indeed any con- glomerate band has been yetjobserved following, in its relative place, the] sinuosities of band 2, where the strata are afiected by the synclinals and anticlinals that have been described. Eastward of the fault, aDd northward of band 2, there is an exposure of conglo- merate close upon the southeast side of the main road, the bearing of which would carry it under the church of St. Joseph ; and two years ago it was observed in an excavation for the foundation of a house on the northwest side of the road, close by the church. In the strike of these exposures, about 400 yards beyond the church, there is a band of conglomerate, which continues in tho ^ame strike for about a hundred yards. This strike would carry thv band away from those of the North Ridge, and gradually bring it towards those of the Coast Ridge ; and it appears probable that the bands of the Coast Ridge may be only a repetition of some of those of the North Ridge. The main band of the Coast Ridge is associated with sev> eral beds of sandstone ; and from its great breadth it may possibly be capable of division into more than one mass of conglomerata* To the southwestwardof the extreme point to which this band haa been traced, iaere occurs in the cliff, to the southeast of the Lower Ferry, the band \ ; one of those referred to in the description of m I860. Its exact relation to the other banda has not yet beei« satis&ctorily detennined. Southward of A^ you will remark A*, and you will perceive that these two bands somewhat converge to the southwest, in which direction they are not traceable for over a quarter of a mile. At the time oftiie previous description, it was 1^ undecided whethv^r these were to be considered distinct bands, or a repelitioiii of one anotbbt. They are now assumed to be distinct. On the Middle- lUdge, the band 4, at P, is followed by B^ ; which is a band of slate with nodules of limestone. On the North Ridge its place would be between A> and A** It would therefore be band 5, and A* would be band 6. The bands Y, 8, and 9 succeed on the north side of the Middle Ridge, the band 9 being B> of the former des- cription ; like B^, it is composed of slate studded with nodule'i of limestone. This band appears to have a considerable deveio|v ment southwestwardly, in a long shallow trough^like form, ex- tending to the Grande 06te road. From this, its ontcrop returns on the south side of the Middle Ridge anticlinal, and points to B' ; which however differs from it in character, having a base of mag- nesian limestone instead of slate. What is seen of the bandB^ is broken, into three portions by transverse faults. It is evidently on the south side of the Middle Ridge anticlinal, and may corres- r-'M d with band 8, but this has not yet been satisfactorily made out ; nor has it yet been found possible to arrange the complicated exposures to the southeast of it, on the South Ridge. On the southwest boundary of the fief Ste. Anne, near the quarry there indicated, the beds appear to be dislocated on the north side of the Middle Ridge anticlinal, by faults, which do not. affect the outcrops on the south side. These faults may be smal) breaks accompanyiug twists in the strata, the connecting parts of which may be concealed by drift ; but it would require additional £scts to make their arrangements certain. Though the number of bands is assumed to be nine, some of them may be repetitiona through the effect of plaits suddenly starting up, like that at y, or through undetected faults running with the stratification. The ' distribution of the outcrops in the southwest part of the South l^dge shows the very complicated character of the disturbances,, and is a warning against over-confidenca in respect to minute de- tails. In regard to the main features of the structure howevei-, there appears to be no doubt; namely that the Middle and South Ridges are two well marked antidinals, and that a synclinal, not 9 I«88 BO, nins between tho Middle and North Bidgee, repeating the whole mass of strata. From the £Mreg, are from the bands marked on the map by those letters. With the exception of a nngle specimen of the pygidium oiBathafurus St^ordi, obtained by Mr. Stwry Hunt from the band 4 (A'), where it crossee the more northern synclinal axis near the Redoute ; the band A' afforded to my late r^etted and talented young scientific friend, Mr. John Head, and myself the first collection of fossils obtained by the Sur^ ▼ey at Point lA^iz. These were taken from the whitish limestone masses associated with the bed, where it crosses the fief Ste. Anne and the opinion in regard to them expressed by Mr. Billings, induced me to instruct Mr. Bell to make a fardier collection on the same band. In addition to Uie fossils collected by Mr. Head and myself from the band, there are some by Mr. Richardson, and others by Mr. Bell, all from the fixed rock ; but in Mr. Bell's collection there are, in addition, thoso from the limestones designated by Mr. Billings as Nos. 1 and 3. These limestones were not, like the rest, firmly at- tached to the band, and as they have been by Mr. Marcou designated as two loose boulders, lying on the superficial soil, while he carri^ them away from their true site, and approximates their position to the lime-kiln of the Redoute, in order to affiliate them to that mass, it will be necessary for me to describe their mode of occur- rence. On the ilef Ste. Anne, the band 3 (A*) dips to the southeast at a high angle. It is from &bout twenty lo twenty-five feet thicks and in its calcareo-magnesian base it holds a great many masses of yellowish-white limestone, in which fossils are apparent, and somewhat abundant. It is underlaid by slates; and in some parts a sudden step to the underlying slates occurs at i^ northern edge. At the foot of this step, Mr. Bell observed in one place a mass of gray-weathering yellowish-white limestone pro- truding for a few inches through the soil. This mass, when exca- n rated from its position, prored to be aboat a foot in diameter, and very fossUiferons. Persoaded that it had fallen from the conglo- merate band, he tried fiirther on in the strike, and found another; and finally, in the distance of about fifty feet along the strike, he obtained fi?e masses, each as heavy as would require a strong man to lift ; and twelve smaller masses, each of about twenty pounds weight and upwards. They were all rich in fossils. Some of these gave to Mr. Billings his limestone No. 1, and others that of No. 3. All of these masses, some of which were sharply angu- lar, rested on the slate, just at the base of the conglomerate band ; and with the exception of the small portion of the first one, were wholly covered by the soil, one of them to a thickness of a foot; requiring, before it could be extracted by aid of pick, shovel, and crow-bar, a hole to be made of two feet deep. It appears to me much more probable that these masses should have fallen from the conglomerate band which they touched, than that they should have been transported nearly half a mile from the Bedoute, and all laid at the foot of the conglomerate band A*, in a row in its strike. It is by no means supposed that the stock of these masses was ex- hausted by Mr. Bell ; more may probably be obtained in the strke, and I am persuaded, that if the adjacent parts of the conglomerate band were laid bare, similar masses would be found imbedded in it. Mr. Marcou states that the limestones Nos. 1 and 3, without doubt come from the Redoute ; and that in respect to No. 1, so rich in trilobites, he could almost point out the exact spot from which it came. Soon after the first discovery of fossils at Point L^vis, I spent a good deal of time in endeavouring to obtain spe- cimens from Quay's quarry, but with very indifferent success. Fragments of trilobites were observed, but the only recognizable species obtained was Menoeephalus globo»m» Perceiving that Mr. Marcou had been so fortunate as to meet with upwards of nine species of trilobites in the locality, I last season renewed my attempt ; and with Mr. Billings, made a diligent search of the rock, but with no better luck than had attended my previous researches ; Menoee- pIuUus globoiw being again the only species procured. Mr. Marcou states that the stratification is indistinct, and that in con- sequence of the hardness of the stone, it is difficult to obtain spe- cimens. This perfectly accords with what we observed ; but not with the characters of the limestones Nos. 1 and 3 ; which are not very hard, and in which the fossik occur in layers, marking well the stratification. The limestones split with moderate facility in the direction of those layers, and give considerable planes of surface, 11 \d m m "with fossils starting prominently up from them. I presume therefore that the beds at the Redouto, with which Mr. Marcon compares the limestones No. 1 and 3, are some which he has not yet desribed, and with which we can make no comparison, as we have not been so fortunate as to find them. Since I860; Mr.Devineand Mr. Cayley, both of the Grown Lands Department, have obtained several species at Point L^vis. The lat- ter gentleman discovered Ampkion CayUyi^ (Billings) in band 3, (A') on the North Ridge ; and Mr. Devine, on the same ridge, has procured Bathyurus Safordi from band 2, Menoeephalua globo- auSf and Cheirurus Eryxfvom band 3 (A') ; and from band 4 (A') Bathyurua Safordi, B. Cordfat, and B. hitubercuhtvt. But from this band he has made a very important addition to the fauna of t^oint L^vis, in a perfect specimen of what Mr. Billings agrees with him in considering an Olentts, or a closely allied genus. This was ob- tained on the North Ridge, just east of the fief St. Anne, in a mass of drab-colored limestone ; which Mr. Devine thinks is a part of the 83lid band, although he has not yet tested the matter snfiS- ciently to be positive. The same part of this band here holds ObolellOy Orthis Evadne^ Camerella calei/era, Pleurotomana^ EccuUomphalus Canadensis^ Orthoceras, Agnostus AmericaniUf A, CanadmsiSj A. Orion, Arionellus suhdavatus, Baihyurus capax, B. quadratusy B. Saffordi, Cheirurus Eryx^ C. Apollo, Dikelocephalus magnijicus, D. megalops, D. planifrons, D. . Owenij Mmocephalus Sedgwickii, and M, Salteri. In this col- lection, the species of Pleurotomaria, EccuUomphalus, and Chieturus do not occur in tk>) same hand-specimens of rock with the others. Bathyurus Saffordi is in the same specimen with Menocephalus Salteri, On the Middle Ridge he has ob- tained Menocephalus globosus from band 4, at the Redoute. Mr. Billings has obtained in band 2, on the North Ridge, Bathyurus quadratus ; on the Middle Ridge, in band 6, on the north side of the anticlinal, Leptama decipiens; and the same species in band 7, on the same side of the anticlinal ; while band 1, on the south side of the anticlinal, has yielded him a Pleura- iomaria, allied to P. Laurentina^ Orthocera^, n. «., Ulcenus , and Asaphts . In a band of conglomerate forming two successive mounds at the water's edge, northwest of the Coast Ridge, and runningj>arallel with it, he has met at D, with anew species of Dileehcephahts To make the distribution of the fossils, which we in Canada (in- cluding Mr. Devine and Mr. Cayley) have obtained at Point L^viSi I? more dearly understoodf a oatalogae of them has been prepared, wit;bthe f^pecifio names of those i^hich have been desoribed, itnda separate column for each of the bands, and made a part of th« present communication. In this catalogue nocertain stratigraphical place is assigned to the bands p, 6, and A, in relation to the others ; which, from 1 to 9, are supposed to be in ascending order. With the exception of those otherwise marked, all the determined species have been described by Mr. Billings. Mr. Marcou, it appears to me, has gone somewhat out of his way to insinuate a discourtesy towards you on the part of the Car nadian Survey, in that we have, as he says, distributed fossils of the Quebec group, in England, to more favoured geologists than yourself Mr. Marcou could not have stated this from his own knowledge, as it is not conristent with fact. The t:;nth of the mat- ter is precisely the reverse of this. We long ago did our- selves the pleasure of transmitting to yon a small collection of the principal species ; while we have presented none to any other of cur geological friends in Europe. On this side of the Atlantic we have exchanged a few specimens with Col. Jewett, of the New York State Museum, for New York species, of which we stood greatly iu want ; and we are just now about to make a small exchange with Mr. A. H. Worthen, State geologist of Illinois, for species from several of the Western States, of which we have long been anxious to possess authentic specimens. Mr. Marcou seems especially aggrieved that he did not obtain a pygidium of DikehcephahM ma^nijicust asked for, as he states, in your name. This was during ' my absence in England, at the International Exhibition. Mr. Bill- ings cannot call to his recollection that the application was made in your name. Such an application would have afforded him the opportunity of ii^forming Mr. Marcou, that you were probably already supplied, in the collection sent ; but it would not have altered the propriety of what, in conformity with his duty, he found hiniself under the necessity of replying ; namely that he was not authorized to distribute the ^cimens of the Provincial Collection. I am, my dear Mn Barrande, ^:; ^ ;;* );;;; ,* Yours very truly, --' '^jv ■^^-k. .-M-^ W. B. LOGAN.- Mr. JoAOHui Barrande, '&-r'»m^r'^^^ -^0^4 Rue Meziere No. 6. Paris, ^; .>>^??! A % Vf-i.rii!^-^;*;. *i^- i^^i^ ,f«'.5 1^ CATALOOUB OF FOSSILS FROM THB QUEBEC GROUP, COLLECTED AT POmT L^VIS. o 9 Tetradiam 7. GraptolithQB, several sub-genera (Hall). Lingula Mkntelli " " Irene " Qaebecensis. Obolella Ida <' desiderata A.crotreta n. s....... •.........•••.. .. Leptana decipiens " sordida. (( nndescribed 1 DIG I ...... . Strophomena, nndescribed Orthis gemmicula. " Tritonia orthambonites (Pander) Euryone Electra Hippoly te Evadne Mycale Eudocia Quebecensis nndescribed 1 « 2 (I Q o... ...... ........ ! kM 4 fi 4i 41 « l( jt I< « l( It U Gamerella calcifera Stricklandia ? Arachne . . . . . " Arethusa.... Cyrtodonta? nndescribed... Ecculiomphalus Canadensis. " intortus... Pleurotomaria vagrans " Postumia.... « H .tk, ti Quebecensis nndescribed « It 1. 2. 3. 4. Marchisonia, nndescribed, 1. t( (C A • ••••••••• • «•••< Helicotoma porstriata Cphileta uniangulata (Hall) . " undescribed, 1 «« " 2 Maclurea Atlantica Holopea dilucula (Hall) " undescribed Metoptoma Melissa " Hyrie Orphyne. Venillia . • •••••< tl ftQOIUftlfte ••••••# ••■••••••• 6 :' 'I'-. ■ i m 14 iiji'- Metoptoms Anffosta " inperb* OrthooerM Antolyons . • . . ** undeieribed 1. 2. 8. 4. 6. 6. II II II u II II II II II OTrtoeeni M«teUat. II II II II Dletrs. Alethes..... Mertaritu... STpluuc undeieiibed. li NMtUiu AgnottoB Americftnui. « Orion Agnostas Oanadensis. . Amphion Oayleyi Ampyz, undescribed.. . Arionellui eylindrious. « saboUyatas. AgaphuB niaenoides. . . . " goniarog Bathynrus capax " dabiua. ...> II II II I II bitabereulataa armatuB ^ . . . Saflbrdi oblonguB Gordai " quadrataB OheirnruB Apollo " Kryx ConocephaliteB Zenkeri DikelocephaloB magnificui " planifironB " Oweni " Belli " megalops.... " cristatos " undescribed " (OlenuB) Logan! (Derine). Endymion Meeki Holometopus Angellni lUaenas, undescribed Leperditia MenoeephaluB globosus. " Sedgwick! . . . . " Salteri (Derine). NileoB, undescribed Shumardia granulosa J> b 112 ■ •••• •••• •• >•••••«•»« 4T5 6 9 « 'A.l.% •*.»■-» i • ?»•:'.« :\ « J'- fi" Xi "ffcaM ' I I -■— J# OMNiOeiCAL KDRVn-wQUni SrWEUfuiniailiRetor. ShtwiHo tkf dittniution . \ UMBSTGOTRCaa arm. QUBBBC GHOUP POINT LEVIS *^ Seale '—*'-" r^trrri - Y \.r^ ■J ^, *||* /!• 4' ' ../' / . J^f^- '■ t * ■-^i' ■* '-Ji., .„^v*" ,^#'V-" ^ .;ii* -•ft *«*■ '*" ^ m IP*^' !«.= W J .!".• #' , -