WITH DESCRIPTIONS OF NEW SPECIES 33 



Var. dunelmensis nov. (PI. L, figs. 16 and 17). 



This variety differs mainly in the chaetotaxy of the second 

 and third scutum. In the typical form there are at least ten 

 or eleven lateral setae on the second scutum between the 

 antero-lateral seta and the apical one, two of which are 

 distinctly longer than the others ; in all the Gibside specimens 

 there are only seven or eight such setae, including three more 

 conspicuous or longer ones, namely, one short one, one longer, 

 one, or sometimes two short ones, one longer, two short and 

 one longer, and then the apical seta. The second of these 

 lateral setae in the third scutum is distinctly longer than in the 

 type form, whilst the setae of the cerci appear to be more 

 regular in length. In the typical form, so far as I understand, 

 the metatarsus possesses in addition to the three long dorsal 

 bristles a very minute dorso-lateral seta near its most distal 

 extremity ; in var. dunelmensis this minute seta is replaced by 

 a bristle almost as long as those on the fore-margin, and in 

 one specimen there are four instead of three dorsal setae on 

 this joint. 



Distribution. — Forma principalis. A single specimen taken 

 with S. vulgaris on the Wear near Penshaw, Co. of Durham, 

 April, 191 1. 



Var. dunelmensis mihi. Numerous examples from Gibside, 

 Co. Durham, June, 191 1. These were taken under small 

 stones very firmly embedded in much trodden earth, a situation 

 that would appear quite unlikely to harbour such delicate 

 creatures. No examples of vulgaris or any other species of 

 Scolopendrella occurred with this form. 



Grassi in describing S. isapellce records specimens from near 

 Como, near Capua, near Lecco, and at Catania, but Hansen 

 considers that some of his specimens would be really referable 

 to vulgaris, a species not then described. Hansen has taken 

 isabellc? at Scilla and Aspromonte in Calabria, whilst Borner 

 has taken it at either Palmi in Calabria or Catania in Sicily. 

 Apparently not uncommon in Southern Italy. 



c 



