BIBLIOGRAPHY OF PALAEOZOIC CRUSTACEA. 45 



Om Palaeaderna eller de sa kallade Trilobit- 



erna. Stockholm, 1826, 6 pis. 



Svenska Vetensk. Akad. Handl., 1826, p. 226. 



The German translation bears the following title: Ueber die Palaeaden, 

 oder die sogenannten Trilobiten von J. D. Dalman, von Friedrich Engel- 

 hart, rait 6 Kupfertafeln, Niirnberg, 1828. 



Dalman 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, Ogygia; 4th genus, Olenus ( Para- 

 doxides Br.) Section 2. Battoides: 5th genus, Battus (Agnostus Br.) 



Subgenera: 1, Asaphus (Nilens); 2, Asaphus (Illcenus); 3, Asaphus 

 ( Ampyx); 4, Lichas n. g. 



I. Calymene blumembachii Brong. var. (a) tuberculata, (b) pulchella. 

 2, Calymene bellatula n. sp. 3, C.polytoma n. sp. 4, C. aclinura Dalm. 

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



II. Asaphus. Sectio 1, genuini: 1, Asaphus mucronatusTSrong. 2, A. 

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

 Wahl. 4, A. granulatus Wahl. Divisio II. Mutici: Asaphus angustifrons 

 n. sp. 6, A. expansus. 7, A.frontalis n. sp. 8, A. lcevice.ps n. sp. 9, A. 

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

 n. sp. Sectio III. Illaenus. Divisio 1, Cornigeri: 11, Asaphus (Illcenus) 

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

 Wahl. 13, A. (Illceuus) laticauda Wahl. Sectio IV. Lichas: 14, Asaphus 

 tact> ;iatus Wahl. Sectio V. Ampyx: 15, Asaphus ( Ampyx ) nasutus n. sp. 



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

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

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



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

 follows: 



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



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

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

 latulaD&lm. 5, C. polytoma Dalm. 6, C. actinura Dalm. 7, C. -sclerops, 

 C. macrophthalma (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 1. Genuini Divisio 1. Cornigeri 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 Wahl. 6, A. extenuatus Wahl. Divisio 



2. Mutici. 7, Asaphus angustifrons Dalm. 8, A. dilatus Briinn. 9, ? A. 

 buchii Brong. 10, A. expansus Linn. 11, A.frontalis Dalm. 12, A.lcevi- 

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

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



