NOTES UPON THE SPECIES OF MYRIOPODA SYNGNATHA, DE- 

 SCRIBED BY THOMAS SAY.* 



BY CHARLES H. BOLLMAN. 



During the past year, while endeavoring to identify the North Amer- 

 ican species of inyriapods described by early authors, I have spent con- 

 siderable time studying those described by Mr. Thomas Say, whose 

 only work on our species appeared iu the Journ. Acad. Nat. Sci. Phila., 

 for 1821. As my conclusions in several cases in regard to the identifi- 

 cation of his species are different from the opinions held by other au- 

 thors I have deemed it best to embody my views in the form of a paper. 



The only types of Say's species that are probably now preserved are 

 those sent by him to Dr. Leach and deposited by the latter gentleman 

 in the British Museum. These specimens were afterwards studied by 

 Newport and Gray, and lately the type of Cryptops posticus and the 

 genus Theatops have been reexamined by Mr. B>. Innes Pocock. 



In the following paper I have marked with an asterisk (*) those 

 species the types of which are now preserved in the collection of the 

 above museum. Of the seventeen species described by Say all except 

 one are good, the names of three, on account of preoccupation, have 

 had to be changed, and six have since been transferred to other genera. 



1. Julus impressus Say. Journ. Acad. Nat. Sci. Phila., 102, 1821. 

 Parajulus impressus Bollnian. Ann. N. Y. Ac. Sc, 34, 1887. 



This species, at first considered to be valid, was afterwards identified 

 by Dr. Wood with his Julus venustus. A comparison of these two spe- 

 cies shows that they are very different. Besides, venustus is not found 

 south of Kentucky, while Say's sj>ecimens of impressus were from Geor- 

 gia and Florida, although it ranges north into the region of venustus 

 (Conuersville, Brookville, and Bloomington, Ind.). This species should 

 now standas Parajulus impressus (Say). 



2. Julus punctatus Say. Journ. Acad. Nat. Sci. Phila., 102, 1821 (preoccupied by 

 Julus punctatus Leach, 1815). 

 Julus stir/ mato sua Brandt. Kecueil, 88, 1841 (preoccupied by Julus stigmatosits 

 Eichwald, Zool. spec, n, 124, 1830 (=Stronyylosoma pallipes Olivier). 



*I now regard the old group of Myriopoda as being composed of two utterly dis- 

 tinct divisions, one including the Pauropoda and Diplopoda, to which I have restricted 

 the name of Myriapoda, and the other including the Syngnatha as more closely re- 

 lated to tho Hexopodu, and should be united with it in a distinct class. 

 144 



