176 
Traksactions Texas Academy of Science. 
257 . Hyatt, Alpheus. 
Carbaniferoiis Heplialopodfs. 
Second Ann. Eept. of the Geol. Surv. of Texas, 1890, pp. 327- 
356. '37 figures. Austin, 1891. 
iContents : Nautiloidea. iGroniafcitinae. 
The following outline will better show the scope of this paper : 
iNautiloidea:' TemnocJieilus Concliiferous, n. s.; T. Forbesianus, MeC. ; 
T. latus, M. andiW. ; T. depressus, n. s.; T. crassus, n. iS.; Metacoceras cav- 
atiformis, n. s.; M. dubium, n. is. ; M. Walcotti, n. s.; M. Hayi, n. s.; M. 
inconspicumn, n. s.; Tainoceras cavatum, n. .s. Domatocer,as, n. g. D. um- 
biUcatum, n. -s. Asymtooeras. A. 'Newloni, n. s.; Phacoceras Dumbli, n. s. 
'Ephippioeeras. E. divisum, W. and iSt. J. Endolobus. E. gibbosus, n. s. 
Coniatitinae. Gastrioeeras. 0. compressum, n. s. 
‘‘The following descriptions, accompanied by figures in outline, were 
taken from a icollection forwarded by Mr. E. T. iDumble, State Geologist of 
Texas, and other fossils which were in my possession as loans from the 
National Museum and various persons referred to in the text. These forms 
being extremely limited in their chronological distribution, and, therefore, 
very helpful in distinguishing the age of the rocks in which they are found, 
it was thought best to have them all published in one treatise. This pro- 
ceeding also enabled the author to make more satisfactory comparisons, 
and as these comprise a larger number of species than has yet been got 
together in a single publication, it will be more satisfactory to working 
geologists.” P. 329. 
258. 
'The Fauna of Tucumcari. 
iCorr espondenoe . 
Amer. Geologi&t. Vol. XI, p. 281. Miiineapolis, April, 
1893. 
“In an article in your March number, p. 213, ‘Pemarks on a part of the 
review of the Third Texas Peport,’ by Prof. Jules Marcou, I have been 
quoted as having said ‘the fauna (meaning that of the Tucumcari region) 
is an upper Jurassic fauna.’ This quotation is correct, but as stated by 
Professor Marcou, it was a verbal opinion given in 1889. I do not see 
why this should be considered of any value, but since it has been twice 
quoted * * it is only proper to state that I do not at present con- 
sider myself qualified to give any opinion upon this question.” 
259. 
iCarh'oiiiferou& Cephalopods. Second Paper. 
Fourth Ann. Kept, of the Geol. Surv. of Texas, 1892. Pt. II, 
pp. 377-474. 35 cuts; plates xlvi-xlvii, inclusive. Austin, 1893. 
iContents : Introduction — Explanation of 'Diagrams : Table I. Lettering 
of Diagrams to illustrate Descriptive Terms. Table II. Ontogenetic 
Terms. Table III. iSummary of Terms. Tainoceratidae — Temnocheilus. 
T. conchiferus ; T. coxanus. Eoordiceras — ^Group of Goliathum; Group of 
