BIBLIOGRAPHY OF PALJ^OZOIC CRUSTACEA. 45 



Om Pakeaderna eller de sa kallade Trilobit- 



erna. Stockholm, 1826, 6 pis. 



Sveuska Vetensk. Akad. Handl., IS'26, p. 226. 



The Germau trauslatiou bears the following title: Ueber die Pala?aden, 

 Oder die sogenannten Trilobiten vou J. D. Dalmau, von Friedrich Engel- 

 hart, mit 6 Kupfertafeln, Niirnberg, 1828. 



Dalmau arranges 41 species of Trilobites under 5 genera and 4 sub- 

 genera, as follows: 



Division I. Oculated: 1st genus, Calymene; 2d genus, Asaphus. 



Division II. Typhlini: 3d genus, Oc/yr/kt; 4th genus, Olciius ( Para- 

 doxide» 'Sx .) Section 2. Battoides: ofh. ^enws, Battus ( Afjnoslus 'Bv.) 



Subgenera: 1, Asaphus (Nileus); 2, Asaphus (Ilhenus); 3, Asaphus 

 ( Ampyx); 4, Lichas u. g. 



I. Calymene blumembachii Brong. var. (a) tuherculata, (b) j^tdchella. 

 2, Calymene hellatula n. sp. 3, C. polytoma u. sp. 4, G. actinura Dalm. 

 5, C. sclerops n. sp. 6, C. punctata Brttnn. 7, C. concinna n. sp. 



II. Asaphus. Sectio 1, genuini: 1, Asaphus 7nucronatus 'Brong. 2, A. 

 caudatus Brtinn. Subdivisio 2. Cornigeri ecaudati: 3, A. extenuatus 

 Wahl. 4:, A. (jrantilatus\fah\. Divisio II. M-uiici: Asaphus angustifrons 

 n. sp. 6, A. expansus. 7, A . frontalis n. sp. 8, A. ktviceps n. sp. 9, A. 

 palpebrosus n. sp. Sectio II. Nileus: 10, Asaphus (Nileus) armadillo 

 n. sp. Sectio III. Illaenus. Divisio 1, Cornigeri: \l, Asaphus (Ilkenus) 

 centrotus n. sp. Divisio II. Mutici: 12, Asaphus (Illanus) crassicauda 

 Wahl. \S, A. (IlUeuus) laticauda Vfahl. Sectio IV. Lichas: 14, Asaphus 

 lact>iatus Wahl. Sectio V. Ampyx: 15, Asaphus (Ampyx) nastitus n.s'p. 



III. 1, Olenus tessini Brong. 2, 0. bucephalus Wahl. 3, 0. spijiulosus 

 Wahl. Divisio II. Mutici: 4, Olenus gibbosus Wahl., 0. scarabieoides 

 Wahl. IV. Battus ( Agnostus ) Brong. B. pisiformis Linn. 



In the second part of this work the genera and species are arranged as 

 follows: 



I. Calymene. Sectio 1. Capitis angulis posticis elongatis attenuatis. 



1, Calymene variolaris Brong. Sectio 2. Capitis angiilis posticis rotund- 

 atis. 2, Calymene blumembachii Brong. 3, C. trisiani Brong. 4, C. bel- 

 latulaDaHm. 5, C. polytoma J)u\va.. 6, C. actinura J)&\m.. 7, C. sclerops, 

 C. macrophihalma (Brong. tab. 1, figs. 5, a, b, c). 8, var. B. (Brong. 

 tab. 1, figs. 4, a, b). 9, C. protuberans. 10, C . schlotheimii Bronn. 11, C. 

 latifrons Bronn. 12, C. punctata Briinn. 13, C. concinna Dalm. 



II. Asaphus. Sectio I. Genuini Divisio 1. Cornigei-i subdivisio 1. 

 Caudati. 1, Asaphus macronatus Brong. 2, A. caudatus Briiun. 3, A. 

 auriculatus Dalm. 4, A. hausmanni Brong. Subdivisio 2. Cornigeri 

 ecaudati. 5, Asaphus granulatus\W&h\. Q, A. extenuatus \S(\\i\. Divisio 



2. Mutici. 1, Asaphus angustifronsJyaiXva. S, A . dilatus Bv\xi\n. 9, t A. 

 buchii Brong. 10, A. expansus lainn. l\, A. fro7italis'Dahn. 12, A. kevi- 

 ceps Dalm. 13, A. gigas DeKay. 13b, A. gigas, planus DeKay. 14, .4. 

 palpebrosus Dalm. Sectio II (Nileus). 15, Asaphus (Nileus) armadillo 



