374 Mr. Newport on the Class Myriapoda, Order Chilopoda. 



and nine pairs of legs ; others with ten pairs of legs, and nineteen joints to the 

 antennae ; and others, still larger, with eleven pairs of legs, and more than 

 twenty joints to the antennae; while those which appeared to be adult speci- 

 mens had twelve pairs of legs, and twenty-eight joints to the antennae. These 

 facts show, that in their mode of development they resemble the Lithobiidce, 

 which acquire their adult number of legs and segments by a succession of deve- 

 lopments, which in the GeophiUdce take place only to a very limited extent. 



The soil preferred by the Scolopendrellidce is a moist light mould at the 

 roots of grass. These little animals, like their congeners the Litkobii, shun 

 the light, and run with great celerity, from which 1 am inclined to regard 

 them as of carnivorous habits, preying, perhaps, on the microscopic Poduridce 

 found in the same places. The periods at which I have captured them are 

 the spring and summer months. The perfect full-sized specimens are found 

 in May, while the smaller ones are most abundant in June and July. 



Familia 3. Scolopendrellidce. 



Corpus pedesque breves, appendicibus styliformibus. Segmenta inaequalia ; scutis dorsalibus 

 imbricatis. Antenna elongatae, articulis ultra 16. 



Genus 4. Scolopendrella, Gervais. 



^«monilifomes,pilosa3. Corpus e segmentis 14. P«fom paria 12. Caput depression ; 

 segmento basilari brevissimo. 



1. Scolopendrella notacantha, alba, scutorum dorsalium angulis posticis elongatis spinescen- 



tibus. — Long. lin. 1 j. 



Scolopendrella notacantha, Gerv. in Rev. Zool. 1839, p. 279. 

 Had. Prope Parisios, in hortis. 



2. Scolopendrella immaculaia (Tab. XL. fig. 4. a, b, c), alba immaculata, stvlis analibus tri- 



angulanbus acutis.— Long. lin. 1^. 

 Hab. Prope Londinum, ad St. John's Wood.] 



Family 4. Scolopendrid^e. 



The Scolopendridce differ from the UthobUdce and Scolopendrellidce in pos- 

 sessing twenty-one pairs of legs and twenty segments to the body, besides the 

 two segments which constitute the head. 



The anterior or cephalic segment (Tab. XXXIII. fig. 4. a) is small, heart- 



