Scudder.] . 64 ■ [May 24, 



Mr. Samuel Garman remarked on the evidence of an annual 

 dormant period among sharks. 



Section of Entomology, May 24, 1882. 



Mr. S. H. Scudder in the chair. Four persons present. 



Mr. S. H. Scudder exhibited a specimen of Scolopendrella found 

 near Boston by Mr. S. Henshaw, which seemed to belong to a 

 species distinct from any described. 



The crateriform openings considered by Ryder as stigmata could be 



readily seen (figs.l and 2) just in advance and within the bases of the legs, 



or at least of the abdominal pairs, circular in outline, and large enough to 



F - j insert the tips of the legs. The collophore 



^- of Packard is situated midway between the 



fCT"7\ crateriform openings at the base of the first 



fr^A. 



I 



ft 



abdominal legs and appears to consist of a 

 U y \r~^ circular opening closed by four triangular 



_. „ „. „ pointed teeth, which converge over its cen- 



Fig. 2. Fig. 3. l ' ° 



tre and are striated in the same sense. The 



ventral appendages at the base of the legs are excessively minute, not half so 

 long as the claws, and the structure of the legs themselves is unusual. They 

 are four-jointed (fig. 2, 3) besides a basal prominence on which the ventral 

 appendages are situated ; the joints are quadrate: the first scarcely longer 

 than broad ; the second three- fourths as broad and half as long as the first ; 

 the third about half as broad as the first and a little longer than the second; 

 the last less than half as broad as the second, and four times as long as 

 broad, or a little longer than the basal joint, equal, the tip rounded on the 

 outer side and furnished with a minute saucer-shaped pad or flanging ap- 

 pendix, from which arise the exceedingly delicate, rather strongly curved, 

 subequal claws, as long as the width of the apical joint. The inner third 

 or half of the basal three joints appears to be compressed, and at the tip 

 flexible, so that when the leg is bent (fig. 3.) the stiff base of a joint 

 imbeds itself in the apex of the joint preceding it and makes it appear 

 sharply and deeply angulate at the tip, within. On account of the robust- 

 ness of the legs, the name of Scolopendrella latipes is proposed for the 

 species. 



The joints of the antennae in this specimen are sixteen in number, of 

 which two of the basal ones are not shown in figure 5 and are of a_very 



