REPORT OF THE DIRECTOR I917 



47 



unknown to this State, in the Utica and Lorraine formations during 

 the investigation of the stratigraphy of these formations, has led to 

 a revision of the faunas which requires many new illustrations. 



Devonian crinoids. This work is progressing although it has 

 been carried forward under some difficulties. The crinoids of the 

 Devonian formations of New York constitute a very interesting and, 

 for the most part, undescribed or imperfectly described group which 

 has received too little attention. They have been heretofore studied 

 casually but always with the purpose of covering the field exhaust- 

 ively. This final form of the work is now in a fair degree toward 

 completion. Miss Goldring has submitted the following statement 

 as to the scope and condition of the work. 



Devonian Crinoids 



The descriptive part of the monograph on the Crinoids is very 

 nearly completed. At the present time the descriptions include 131 

 species and 8 varieties belonging to 53 genera, among which are 

 14 new genera, 46 new species and 6 new varieties. The lists of 

 the genera, species and varieties are given below. 



With the completed drawings and diagrams and those still to be 

 made, the descriptive part of the monograph will be illustrated with 

 about 400 drawings, 25 diagrams and 8 photographs. Numerous 

 text figures will be used to illustrate the general discussion. 



I List of Genera 



A Camerata 



1 Acacocrinus W. ef Sp. 



2 Acanthocrinus Rosmer 



3 Aorocrinus W. & Sp. 



4 Clarkeocrinus gen. nov. 



5 Clonocrinus Quenstedt 



6 Cordylocrinus Angelin 



7 Corocrinus gen. nov. 



8 Cyttarocrinus gen. nov. 



9 Dimerocrinus Phillips 



10 Dolatocrinus Lyon 



1 1 Gennaeocrinus W. & Sp. 



12 Gilbertsocrinus Phillips 



B Flexibilia 



1 Clidochirus Angelin 



2 Eutaxocrinus Springer 



3 Taxocrinus Phillips 



13 Hadrocrinus Lyon 



14 Hystricrinus Hinde. 



15 Lecocrinus gen. nov. 



16 M ariacrinus Hall 



17 Marsipocrinus Bather 



18 Megistocrinus Owen & Shum. 



19 Melocrinus Goldfuss 



20 Pterinocrinus gen. nov. 



21 Rhodocrinus /. 5. Miller 



22 Sphaerotocrinus gen. nov. 



23 Springerocrinus gen. nov. 



24 Thamnocrinus gen. nov. 



25 Thylacocrinus OMert 



