20 PROCEEDINGS OF THE NATIONAL MUSEUM vol.73 



and remained on the back of the mother from 5 to 15 days. Smith 

 estimates the period of growth at from three to four years. 



The writer has induced this species to sting him and has observed 

 the effects of its sting on others. At the time of the stinging there 

 is a sharp pain, but this soon subsides. A small swollen area, or 

 wheal, usually develops about the puncture point. This soon disap- 

 pears. There are no permanent effects of the sting reported for the 

 species as far as known to the writer. 



CENTRUROroES CAUFORNICUS (Girard) 



CALIFORNIA CENTRUROIDES 



The striped scorpion of California has been considered as a syn- 

 onym of C. vittatus by Pocock (1902), but as pointed out by Wood 

 it differs from vittatus in a number of ways. In the National 

 Museum there are three specimens from California determined by 

 Marx. Two of these are from Lake County and are labeled " Geri^ 

 trurus vittatus Say var. calif amicus W." and one is from Tule Lake 

 and is labeled " vittatus Say " without any variety being given. 



An examination of these specimens shows that the Lake County 

 specimens are similar to vittatus but lack any definite dorsal stripes 

 and have the integument much more roughened and in a manner 

 noted by Wood. The one specimen from Tule Lake is without the 

 subaculear tooth or practically so. It should be referred either to 

 C. exilicaudata or a new species now to be described. All dorsal 

 colorations are wanting in this specimen, but this condition may 

 be due to the preservative used. 



CENTRUROIDES SCULPTURATUS. new species 



The writer has found an unstriped rough species (pi. 2, fig. 6) with 

 a subaculear tooth in southern Arizona. It is related to exilicaudata 

 but has the subaculear tooth. It is also related to vittatus and cali- 

 fornicus but has neither spots or bands dorsally. It is described as 

 follows : 



General color a yellowish brown. There are no dorsal stripes, 

 spots, or other color markings. Cephalothorax without dorsal color 

 markings ; median groove pronounced ; integument granular. Hands 

 slender, fingers about one and a half times as long as hand. On the 

 posterior part of the carapace there is a pair of longitudinal, tuber- 

 culate, carinae that extend forward from the posterior margin about 

 one-half the distance to the eyes. They are situated about one-third 

 the distance from the median groove to the lateral margin of the 

 carapace. Abdomen very coarsely granular above ; each tergite with 

 a more or less distinctly elevated tuberculate posterior margin and a 

 well-developed median carina. Postabdomen longer than abdomen; 



