﻿40 



PROCEEDINGS OF THE NATIONAL MUSEUM 



no*u 



lf.70-030 



mt 0.68 



Figure 14. — Diagram indicating the number of body-rings in the abdomen and the length 

 of the carapace in 42 female paratypes of Lepidurus lynchi, new species (males present 

 in the sample not considered here). Each shaded triangle at the top of the diagram 

 represents the telson of a specimen, below which are indicated the legless abdominal 

 rings (dotted) and the leg-bearing rings. Incomplete rings at the anterior boundary 

 of the telson are denoted by the oblique position of the triangle. Body-ring numbers 

 are shown in the marginal columns at the left and right of this portion of the diagram. 

 The carapace length of each specimen in mm. is indicated in the lower part of the figure, 

 according to the scale in the left and right marginal columns. Correlations of various 

 kinds are reserved for a later statistical report on more comprehensive material. 



Carapace length 17.5 mm.; width 2 x 11.5 mm., width: length 

 relation 1.22; in paratypes length 8.5-26 mm., width 2 x 5-2 x 15 mm., 

 width: length relation 1.14-1.30. Caudal half of lateral margin 

 serrated by numerous, minute, pointed spines. Dorsal carina slightly 

 marked, with 19 short spmes evenly scattered along whole carina; in 

 paratj^pes carina often inconspicuous or wanting, with 0-20 spines. 

 Posterior emargination rather deep, 5 mm., with 12 short spines on 

 one side, 13 on the other, not quite similar in size and somewhat 

 in"egularly placed; in paratypes 7-17 spines on each side. Supra- 

 antennal crest quite smooth. 



